Peoria County, Illinois · Peoria
Water spreading, a burst pipe, sewage, mold or smoke? Call to be connected with a restoration company that serves Peoria, Chillicothe and Bartonville. Start the steps below while you wait.
Answered 24/7 by a participating local provider. We're a referral service and don't do the work ourselves. How it works
Start here
Pick the closest match. These steps limit the damage and protect your insurance claim. Skip anything that isn't safe.
Pipes freeze in Peoria County on about 40 nights a year, mostly November to March. Older homes, 42% of the stock here, are most at risk.
Heavy rain days of an inch or more come about 7.3 times a year here, most often in June. A sump pump that hasn't run since last season is a common weak point.
Sewage backups in Peoria County spike on heavy-rain days, about 7.3 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 81 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
4% of occupied homes in Peoria County heat mainly with wood or propane, below the Illinois county median of 16.5%.
With 48 muggy nights a year, mold in Peoria County can appear within days of a leak. Dry first, then clean.
Local risk profile
With 84,930 homes and around 179,645 residents, Peoria County is 619 square miles of northern Illinois. Besides Peoria, the county seat, the biggest communities are Chillicothe, Bartonville and Peoria Heights. Half the homes here were built before 1966, half after.
50/100 Water Damage Risk Index: Elevated Peoria County ranks 52 of 102 Illinois counties. See the statewide ranking and method.The three factors where Peoria County ranks highest compared with other Illinois counties.
Peoria County gets more hard-freeze nights than most of Illinois. In the 2015–2024 record the county logged about 40 nights a year at or below 20°F (32nd of 102) and 110 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
The longest cold spell was straight 15 days without the temperature rising above freezing, ending in January 2018. The coldest night reached about -21°F on January 31, 2019. Burst pipes usually show up when a spell like that breaks and the ice thaws.
The freeze season here runs November to March, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
Freezing nights typically start around Oct 23 and end around Apr 19.
Peoria gets fewer downpours than most Illinois counties, but they still fill basements. Of roughly 39 inches of yearly precipitation, the damage comes from the 7.3 days a year with an inch or more, ranked 74th of 102. June, July and October see the most. The single wettest day in the record: 3.66 inches, September 28, 2019. The worst three-day stretch dropped 4.51 inches, ending September 30, 2019, the kind of soaking that overwhelms sump pumps and storm sewers.
About 81 days a year swing from below freezing at night to above freezing by day. Those freeze-thaw cycles feed ice dams on roofs, open cracks in foundations and driveways, and stress pipes that are already marginal.
Housing
70% of homes in Peoria County predate 1980, close to the Illinois county median of 65.9%, which ranks 38th of Illinois's 102 counties.
Housing age is mixed: 42% of homes are pre-1960 and 15% are 2000 or newer. Ask any plumber which era your house is from and you'll know which failures to watch for.
Renters occupy 33% of homes. If you rent, the building is usually the landlord's to repair, but your belongings are only covered by renters insurance.
Beyond water
Peoria County averages 48 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in May. Keep indoor humidity under 60%, as the EPA advises, and dry any leak within 24 to 48 hours; in a humid month a wet basement left alone won't dry by itself.
Mold remediation: what to expectHeating fuel matters for fire risk. In Peoria County it's 68% utility gas, 27% electric, 4% propane and under 1% wood. Fires here are likelier to start in the kitchen or the wiring than in the furnace. After any fire, keep the HVAC off until ducts are checked, or soot will travel through the house.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Peoria County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Knox, Marshall, Stark and Woodford get more pipe-freeze nights than Peoria. Stark County has the oldest housing nearby, with 81% of homes built before 1980.
By the numbers
| Factor | Peoria | Illinois median | Rank |
|---|---|---|---|
| Homes built before 1960 | 42% | 38% | 45 of 102 |
| Homes built before 1980 | 70% | 66% | 38 of 102 |
| Homes built 2000 or later | 15% | 15% | 44 of 102 |
| Manufactured or mobile homes | 1.1% | 5.6% | 97 of 102 |
| Vacant homes | 8.4% | 11% | 74 of 102 |
| Wood or propane heat | 4.1% | 17% | 92 of 102 |
| Nights at 20°F or colder | 40/yr | 35/yr | 32 of 102 |
| Days with 1 inch+ of rain | 7.3/yr | 8.4/yr | 74 of 102 |
| Freeze-thaw days | 81/yr | 81/yr | 46 of 102 |
| Muggy nights (65°F+) | 48/yr | 51/yr | 59 of 102 |
Rank 1 is the highest value. Bars run from the lowest to the highest Illinois county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Peoria County: freezing from November to March, heavy rain in June, July and October.
Sources: U.S. Census Bureau, ACS 2024 5-year estimates (2020-2024); weather from NOAA nClimGrid-Daily county averages (EpiNOAA), 2015–2024, averaged across the county; county boundaries from Census TIGER. Reviewed 2026-10-21. Methodology