Illinois is not a hurricane state, and it is not an expensive state. At $2,697 a year for $300,000 of dwelling coverage, it sits slightly below the roughly $2,872 national average published on the same tier. If you stopped reading here you would conclude that Illinois home insurance is unremarkable.
The number that makes Illinois specific is not the premium. It is this: in its 2025 Illinois rate filing, State Farm stated that Illinois has had more hail damage than any state except Texas, and that catastrophe losses exceeded its annual provision in 13 of the last 15 years.
The filing did two things about that. It took an average 27% rate increase — 28.3% on homeowners specifically — effective July 15, 2025 for new business and August 15, 2025 for renewals. And it imposed a minimum 1% wind/hail deductible on Illinois homeowners policies, with customers who did not already meet that minimum automatically billed at 1%.
Because State Farm insures roughly one in three Illinois homeowners, that one filing converted the percentage wind/hail deductible from a niche structure into a mainstream Illinois one. Other carriers use the same approach.
Here is what that means in practice. Your declarations page probably says $1,000. On a hail claim — the claim an Illinois homeowner is most likely to file — the number that applies is probably $3,000, and on many policies $6,000. Nothing about that is hidden or improper. It is written on the policy. It is simply not the number most people think they have.
This guide works through what a policy costs here, which deductible governs which loss, the Illinois-specific gaps in coverage that a generic guide will not mention, how much dwelling coverage you actually need at Illinois construction costs, and what the FAIR Plan will and will not do for you.
A note before you start: everything below is general information about how homeowners insurance works in Illinois, not personalized insurance, legal, or financial advice. Policy forms, rates, and underwriting rules vary by carrier and by your individual circumstances — county, roof age and material, construction type, prior claims, and proximity to the New Madrid seismic zone all change the answer materially. For coverage specific to your property, talk to a licensed Illinois insurance agent; for regulatory questions or complaints, the Illinois Department of Insurance is the state authority.
1. What home insurance actually costs in Illinois
The reference figure is $2,697 a year for $300,000 of dwelling coverage with a $1,000 deductible.
"Dwelling coverage" — labeled Coverage A on your declarations page — is the maximum the policy will pay to repair or rebuild the structure of your home. It anchors the whole policy, and as Section 2 explains it is also the number your wind/hail percentage deductible gets calculated from. The $300,000 tier is a reference level used so that all fifty states can be compared on the same basis; Section 4 explains why it is probably too low for an Illinois home.
Against the national picture, Illinois is ordinary to slightly cheap. The two national averages published on that same $300,000 tier are roughly $2,872 (Insurance.com) and $3,057 (Insurify). Illinois at $2,697 runs about 94% of the lower of the two.
The sources agree unusually well — with one that does not
The two rate tables quoting Illinois on the same $300,000 dwelling / $1,000 deductible basis land at $2,802 and $2,592 — only about 8% apart, which is unusually tight agreement for this kind of data. Both are treated as reasonable and averaged, giving $2,697.
One genuine dissent is worth recording rather than dropping. A third publisher puts Illinois at $3,164 — but on a lower $250,000 dwelling basis. That is more premium for less coverage, and it cannot be reconciled with either $300,000 figure by coverage tier alone. Something else is different about what is being priced: that source rates a 2,500 square foot wood-frame home built in 2000, a heavier risk profile than the other tables assume. It is not an error, and it is not comparable either. What it tells you is that the rated home profile moves the Illinois number as much as the coverage limit does — which is a useful warning if your own house is larger or older than average.
A fourth read at a higher $400,000 tier comes in at $3,240, sitting above as it should.
The honest read: published 2026 Illinois averages span roughly $2,600 to $3,200, and $2,697 is the low-to-middle of that band. A homeowner shopping after the 2025 rate increases may well see quotes above it.
Illinois is internally uneven, and the statewide number hides it
Illinois is not one insurance market. The hail-belt central and downstate counties price very differently from the Chicago collar counties, and they are exposed to different things — severe convective storms and hail downstate, dense older housing stock and sewer-backup losses in the metro. A statewide average is the midpoint of two markets rather than a description of either.
The trend, and the much bigger numbers underneath it
The most recent published year-over-year figure for Illinois is +5% for 2026, slightly ahead of the national +4% in the same report. That report prices each state at its own average dwelling limit rather than a fixed $300,000, so only the percentage is used here; its dollar levels are not comparable to the figures above.
Read that +5% alongside two much larger numbers. A single carrier covering roughly a third of the Illinois market took an average 27% increase in mid-2025. The Illinois FAIR Plan took 11.6% on homeowners effective April 1, 2026.
These are not contradictory. Statewide averages move with mix and shopping behavior as well as with filed rates — when enough customers shop, downgrade coverage, or raise deductibles in response to an increase, the measured average rises far less than the filed rate did. But it means a specific Illinois homeowner's renewal notice may look nothing like +5%, and if yours came in at 25% you are not being singled out.
2. The deductible that actually applies to your most likely claim
This is the most important section on the page.
Two deductibles, not one
Your Illinois policy has an all-perils deductible — the amount you pay out of pocket before the insurer pays anything — typically $1,000. It governs fire, theft, a burst pipe, vandalism, and most everyday losses.
It very likely does not govern wind or hail. On a policy carrying a separate wind/hail deductible, any loss where the cause of damage is determined to be wind or hail runs through a second, larger deductible expressed as a percentage of your dwelling limit.
Illinois is not on the Insurance Information Institute's list of nineteen states plus DC with hurricane or named-storm deductibles, and that was verified specifically. This is not a coastal deductible. It is a hail deductible, and it is the single most consequential piece of fine print on an Illinois homeowners policy.
Where the 1% comes from — this is a documented minimum, not an estimate
The 1% used throughout this guide is not a rule of thumb. It is the documented carrier minimum at the state's largest homeowners insurer, imposed in State Farm's 2025 Illinois rate filing. Customers who did not already carry at least 1% were automatically moved to 1%. With roughly a third of Illinois homeowners at that one carrier, and other carriers using the same approach, 1% is the realistic floor rather than a typical middle. 2% deductibles are also common, and higher percentages exist.
What it costs in real dollars
On the $300,000 reference dwelling limit:
- 1% = $3,000
- 2% = $6,000
Section 4 works out that a 2,000 square foot Illinois home costs roughly $520,000 to rebuild. If your Coverage A limit reflects that, the same percentages become:
- 1% = $5,200
- 2% = $10,400
Against a $1,000 all-perils deductible, that is three to ten times the out-of-pocket you probably believe you have.
The trap: the percentage is of your coverage, not your damage
This catches people everywhere percentage deductibles exist, and it is worth stating flatly. The percentage applies to the insured value of the dwelling, not to the amount of the damage. A 2% deductible on a $520,000 dwelling limit is $10,400 whether the hailstorm did $12,000 of damage or $300,000 of damage. It is not "2% of the claim."
The practical consequence is that moderate hail claims can be worth almost nothing. If a storm does $12,000 of damage to a home with a $520,000 limit and a 2% wind/hail deductible, the insurer owes you $1,600. At a 1% deductible on the same home it owes you $6,800. On a $300,000-limit policy at 1%, a $4,000 hail claim pays you $1,000 — and puts a claim on your record.
A second trap specific to hail states
The wind/hail deductible is per occurrence, not per year. Two separate hail events in the same summer mean two full deductibles. Illinois — the second-most hail-damaged state in the country by that filing's own account — is exactly where this happens. A homeowner who budgeted one $6,000 deductible for the year can face $12,000.
What to do about it
Three specific things:
- Find the wind/hail line on your declarations page. It will be separate from the all-perils deductible, and it will be stated as a percentage. If you cannot find one, call your agent and ask directly rather than assuming its absence — this is one of the most common things a homeowner is wrong about.
- Multiply it against your dwelling limit and write the number down. The whole point of this exercise is that homeowners discover the dollar value after the storm rather than before.
- Ask whether the percentage runs off the dwelling limit (Coverage A) or the total insured value. The base matters as much as the percentage, and the difference can be tens of thousands of dollars on a policy with substantial other-structures and personal-property limits.
3. What a standard policy covers here — and the gaps
A homeowners policy bundles several coverages:
- Coverage A — Dwelling. The structure itself.
- Coverage B — Other Structures. Detached garage, fence, shed. Usually about 10% of Coverage A automatically. In much of Illinois the detached garage is standard housing stock, and 10% of Coverage A is frequently less than it costs to rebuild one.
- Coverage C — Personal Property. Your belongings, usually 50% to 70% of Coverage A.
- Coverage D — Loss of Use. What it costs to live elsewhere during repairs.
Covered perils typically include fire, lightning, windstorm, hail, theft, vandalism, explosion, damage from vehicles and aircraft, and sudden accidental water discharge from plumbing.
Wind and hail are covered in Illinois. The issue is the deductible, not the peril. But four gaps deserve specific attention here.
1. Flood is never covered — anywhere, by anyone's homeowners policy
This is universal across all fifty states, not an Illinois rule. No homeowners policy covers flood. Flood coverage is a separate purchase through the National Flood Insurance Program (NFIP) or a private flood carrier.
Illinois has serious river exposure — the Mississippi, the Illinois, the Ohio, the Rock and their tributaries — and river flooding is a flood claim, full stop. It is also worth knowing that being outside a mapped high-risk flood zone is a statement about a flood map, not about whether your house can flood. A meaningful share of NFIP claims nationally come from outside high-risk zones.
2. Water backup through sewers and drains is excluded — and this one is acute in Illinois
Distinct from flood, and more commonly claimed. Standard homeowners policies exclude water that backs up through sewers, drains, or sump pumps. It is available as an endorsement, usually inexpensive, usually with a stated sublimit ($5,000, $10,000, $25,000 are common tiers).
Illinois readers should treat this as close to mandatory rather than optional. Much of the Chicago metropolitan area is built on older combined sewer infrastructure that carries both stormwater and sewage in the same pipes, and a large share of Illinois housing stock has a finished or semi-finished basement. A heavy rain event that overwhelms the system pushes water back up the line. That loss is not a flood claim, and it is not covered by the base homeowners policy. It is covered only if you bought the endorsement, and only up to its sublimit.
If you have a basement in Illinois and you do not know whether you have water-backup coverage, that is the first phone call to make after reading this page.
3. Earthquake is excluded — and southern Illinois genuinely needs it
Standard homeowners policies exclude earthquake essentially everywhere. In most states that is a formality. In southern Illinois it is not, because of the New Madrid seismic zone, which produced some of the largest earthquakes in the recorded history of the continental United States in 1811 and 1812.
You can gauge how seriously the market takes this by what the residual market does. The Illinois FAIR Plan offers earthquake as an endorsement on both its dwelling and homeowners policies — with a 5% deductible. An insurer of last resort does not build an earthquake endorsement with a defined percentage deductible for a risk nobody faces.
If you own in southern Illinois, price earthquake coverage rather than assuming it is exotic. Note the deductible structure when you do: earthquake endorsements typically carry their own percentage deductible, which on a $300,000 limit at 5% is $15,000.
4. Standard exclusions worth knowing
- Maintenance and wear. Insurance covers sudden accidental damage, not deterioration. This intersects directly with hail: a roof that was already failing is a maintenance problem, and carriers in a heavy-hail state look hard at that distinction.
- Mold, beyond limited sublimits.
- Ordinance or law — the extra cost of rebuilding to current code rather than as originally built. On Illinois's substantial stock of pre-war and mid-century housing this can be a large number. Available as an endorsement; ask for it by name.
4. Making sure you have enough coverage
The most consequential number on your policy is your Coverage A limit, and the most common way it goes wrong is setting it to your home's market value or your mortgage balance.
Neither is right. Dwelling coverage should equal the cost to rebuild your home from the foundation up at today's construction prices. Market value includes land, which does not burn. Your mortgage balance is a financing number with no relationship to construction cost.
In Illinois this error runs badly in one direction, and it is worth being blunt about. Illinois's median home price is about $315,000. Illinois construction cost is about $260 per square foot. Those two numbers mean that across much of the state, it costs meaningfully more to rebuild an Illinois house than to buy one. A homeowner who insures to purchase price in Illinois is very often underinsured, not overinsured — the opposite of the mistake made in high-land-value states.
Working a real Illinois example
Rebuilding in Illinois runs roughly $260 per square foot — the midpoint of a published $200 to $320 band covering materials, labor, and general contractor overhead and profit, excluding land. That is the highest band of any Midwestern state in that source.
On a 2,000 square foot home:
- 2,000 x $260 = $520,000 to rebuild
Take the band seriously rather than the midpoint alone:
- At $200/sq ft: $400,000
- At $320/sq ft: $640,000
Now hold that against the $315,000 median home price. Even the bottom of the band exceeds the state's median sale price. That is the whole argument for getting an actual replacement-cost estimate on your specific home rather than working from what you paid.
Note what this figure is not. It is construction cost — materials, labor and contractor overhead to rebuild finished living area after a loss. It is not market value, and it is not the price per square foot of a home sale. Treating one as the other is the single most common way a replacement-cost estimate goes wrong. And no Illinois building department or insurance regulator publishes a competing rebuild-cost survey to narrow the band, so read it as a range.
The 80% coinsurance rule, and what a shortfall does to a partial claim
Most homeowners policies contain a coinsurance provision requiring you to insure the dwelling to at least 80% of its full replacement cost. Fall below that threshold and the insurer does not merely cap your payout at your limit — it reduces every partial claim proportionally.
Work it on the example. Full replacement cost $520,000, so the 80% threshold is $416,000. Suppose you carry the $300,000 reference limit instead, and a hailstorm does $100,000 of damage. Your limit is three times the loss, so it feels safe. It is not:
- $300,000 carried / $416,000 required = 0.721
- 0.721 x $100,000 = $72,115
- Now subtract the deductible. On an ordinary claim that is $1,000, leaving $71,115.
- But this is a hail claim, so the 1% wind/hail deductible applies: $3,000 on a $300,000 limit, leaving $69,115.
You are roughly $30,000 short on a $100,000 loss well inside your policy limit. Two separate mechanisms — the coinsurance penalty and the percentage deductible — stacked on the same claim. Neither is visible until you file.
At a 2% wind/hail deductible the net drops to $66,115.
Two endorsements worth asking about by name
- Extended replacement cost — pays a stated percentage above your Coverage A limit (commonly 25% to 50%) when rebuilding costs more than expected. After a widespread hail or derecho event, contractor capacity and material prices spike across an entire region at once. This endorsement exists for that scenario.
- Ordinance or law coverage — as above. On older Illinois housing, one of the higher-value endorsements available.
5. Roof age, and why it decides your premium and your payout
In Illinois, roof age decides this — not state law. There is no Illinois statute setting a roof settlement basis, which is exactly why you have to read your own policy.
Illinois carriers have increasingly attached roof schedules alongside percentage wind/hail deductibles, as a response to severe convective storm losses. This is documented market practice rather than a regulated standard, and the typical tiering looks like this:
- Roughly 0 to 10 years old: full replacement cost — the policy pays what a new roof costs today.
- From about 10 years: a declining depreciated percentage.
- Roughly 15 years and older: actual cash value — replacement cost minus depreciation for the roof's age.
Why this compounds so badly in a hail state
Consider a fifteen-year-old roof on a $520,000 Illinois home, damaged in a hailstorm, on a policy with a 1% wind/hail deductible.
- The claim runs through the wind/hail deductible: $5,200.
- The roof settles at actual cash value, so the payout is replacement cost minus fifteen years of depreciation — frequently a small fraction of what the replacement actually costs.
- The $5,200 deductible then comes off the top of that already reduced amount.
The result is a covered claim on a covered peril where the homeowner funds most of the roof. Nothing improper has happened. Both mechanisms are disclosed on the policy. They just compound, and they compound hardest on exactly the older roofs most likely to be damaged.
One more Illinois-specific point: the Illinois FAIR Plan settles on more restrictive terms than a standard policy. If you have been placed there, the roof question is more important, not less.
What to actually do
Pull your declarations page and look for three things: a "roof surfaces" endorsement, a windstorm-or-hail-loss-to-roof payment schedule, and any actual-cash-value language applied specifically to the roof. Any of the three overrides the general replacement-cost promise elsewhere in the policy, for the roof only, and it is easy to miss.
Then ask your agent two questions: what it would cost to buy replacement-cost roof settlement back, and whether impact-resistant (Class 4) roofing carries a credit with your carrier. In a state with more hail damage than every state but Texas, impact-rated shingles are one of the few physical improvements that reliably move both the premium and the claim outcome. Carriers do not always apply the credit automatically — ask for it by name.
6. If no carrier will write you
Illinois has a real backstop. It is narrower than a standard policy and it is getting more expensive, but it exists.
The Illinois FAIR Plan Association
The Illinois FAIR Plan Association (illinoisfairplan.com) is a not-for-profit property insurance association supported by nearly 500 Illinois insurers. It provides coverage to Illinois applicants who cannot buy in the standard market for reasons beyond their control.
What it writes:
- Dwelling Property policies
- Homeowners policies — including forms for renters and condominium owners
- Commercial Property
What it covers. The FAIR Plan is a named-peril product, meaning it covers only the perils explicitly listed rather than everything not excluded. The named perils are fire, lightning, wind, hail, explosion, smoke, vehicles, aircraft, and vandalism and malicious mischief. The homeowners forms add burglary, theft, and personal liability.
Read that list against a standard policy and note what is missing — there is no broad "all other sudden and accidental" catch-all. A loss that is not on the list is not covered.
Earthquake is available by endorsement on both dwelling and homeowners policies, with a 5% deductible — directly relevant in southern Illinois near the New Madrid zone, as Section 3 covered.
Eligibility. Applicants are expected to have tried the standard market first, and a property inspection verifies the risk meets reasonable standards. Reported practice is proof of rejection from three private insurers. The plan is intended as a bridge of a year or two, not a permanent home — the expectation is that you continue shopping the voluntary market.
On the coverage cap, an honest gap. Reported dwelling limits run up to $750,000 with $375,000 personal property, but other secondary sources describe capacity up to $1,000,000 with more limited perils and actual-cash-value settlement. The plan's own site does not publish a maximum limit, so this guide will not state one as fact. Ask the plan or your agent directly for the current cap before you assume your home fits inside it — and note that at Illinois construction costs, a 2,000 square foot home already needs roughly $520,000 of coverage.
The residual market is repricing too
The Illinois Department of Insurance approved an 11.6% statewide average homeowners rate increase for the FAIR Plan effective April 1, 2026, following a 13.8% dwelling-fire increase effective April 1, 2025.
That is the honest framing: the FAIR Plan is not a cheap escape from voluntary-market increases. It is repricing alongside the voluntary market, on narrower coverage. It is protection against having nothing, not protection against paying more.
If you are placed there
Three things to do:
- Read the named-peril list and identify what you have lost relative to your old policy. Then decide what you need to replace separately.
- Confirm the settlement basis, particularly on the roof. FAIR Plan terms are more restrictive than standard.
- Keep shopping. The plan is designed as a one-to-two-year bridge. Fix whatever got you declined — most often roof age or an open claims history — and re-approach the voluntary market at the next renewal.
7. How to actually lower your premium in Illinois
Ranked roughly by how much they move the number in this state specifically.
1. Choose the wind/hail deductible deliberately, in dollars. This is the highest-leverage decision on an Illinois policy, and most people never actively make it. Moving from 1% to 2% on a $520,000 dwelling limit lowers your premium and raises your hail exposure from $5,200 to $10,400 — per event, and Illinois can produce two events in a season. That is a rational trade if you have $10,400 liquid and would genuinely spend it. It is a bad trade if you do not. Do the multiplication before you accept a percentage.
2. Install impact-resistant (Class 4) roofing when you replace the roof, and ask for the credit by name. In the second-most hail-damaged state in the country, this is the physical improvement with the clearest return. It can lower premium, it improves your odds of a favorable claim outcome, and it helps on the underwriting side. Carriers do not always apply the credit automatically.
3. Get your Coverage A limit right — in Illinois this usually means raising it. Because Illinois construction costs ($260/sq ft) run high relative to Illinois home prices ($315,000 median), a large number of Illinois homeowners are insured below 80% of replacement cost without knowing it. That does not save you money in any meaningful sense; Section 4 shows it costing about $30,000 on a single $100,000 claim. Get a real replacement-cost estimate.
4. Raise the all-perils deductible, not the wind/hail one. Going from $1,000 to $2,500 on the all-perils deductible lowers premium and only affects the losses you are least likely to file — fire, theft, water. It leaves your hail exposure unchanged. This is generally the better of the two deductible levers in a hail state.
5. Buy the water-backup endorsement even though it raises your premium. It belongs on this list because it is one of the highest-frequency Illinois losses and one of the cheapest endorsements. Check the sublimit and consider whether $5,000 actually covers a finished basement.
6. Bundle home and auto. Multi-policy discounts remain among the largest routinely available, and after a market-wide rate increase they are also a retention lever — carriers are less willing to lose a multi-policy household.
7. Stop filing small claims. With a $1,000 all-perils deductible and a wind/hail deductible of $3,000 to $10,400, most small losses are not economically claimable anyway. And claims frequency drives both pricing and non-renewal, particularly after a carrier has publicly stated that catastrophe losses exceeded its provision in 13 of the last 15 years. Paying a $2,500 repair yourself is often strictly better than a claim that pays little and marks your record.
8. Ask about the discounts carriers do not volunteer. Monitored alarm systems, water-leak detection devices, automatic gas shutoffs, new-roof credits, claims-free credits, and paid-in-full or auto-pay discounts. Ask item by item and ask which ones require documentation or an inspection.
9. Re-shop every year, and compare the right four things. Line up: the premium, the dwelling limit, the wind/hail deductible percentage, and the roof settlement basis. A quote that beats yours on premium while moving you from a 1% to a 2% wind/hail deductible and from replacement cost to actual cash value on the roof is not a better quote — it is a materially worse policy with a smaller number on the front.
What to do next
If you want these numbers applied to your actual house rather than a statewide average, the Illinois premium calculator estimates your annual cost from your own dwelling limit and deductible. The replacement cost calculator works out the Coverage A limit you actually need from your home's square footage using Illinois construction costs — the number to check first, given that Illinois rebuild costs run above Illinois home prices. And because the wind/hail deductible is what decides your real out-of-pocket on the claim you are most likely to file, the deductible calculator converts 1% and 2% into actual dollars against your specific dwelling limit.
All three show every figure they use and where it came from.
This guide is general information about homeowners insurance in Illinois, based on publicly available figures current as of August 2026. It is not an insurance quote, a policy, coverage advice, or legal advice, and it does not reflect your individual property, county, roof age, claims history, or carrier's specific policy language. Premiums, deductible structures, and underwriting rules vary substantially by carrier and by property. For coverage specific to your home, speak with a licensed Illinois insurance agent; for regulatory questions or complaints, contact the Illinois Department of Insurance.