Bureau County, Illinois · Princeton
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With 53% of homes built before 1960 and about 48 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
Heavy rain days of an inch or more come about 7 times a year here, most often in June. A sump pump that hasn't run since last season is a common weak point.
Backups often follow heavy rain, which Bureau County gets about 7 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
In Bureau County, 3.24 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
15% of occupied homes in Bureau County heat mainly with wood or propane, close to the Illinois county median of 16.5%.
Muggy summer nights, lows of 65°F or more, come about 30 times a year in Bureau County. Mold after a leak spreads fastest from June through August.
Local risk profile
With 15,630 homes and around 32,866 residents, Bureau County is 869 square miles of northern Illinois. Princeton is the county seat; Spring Valley, De Pue and Ladd are the next largest communities. It has some of the oldest housing in the state: the median home went up in 1958.
62/100 Water Damage Risk Index: Elevated Bureau County ranks 12 of 102 Illinois counties. See the statewide ranking and method.The three factors where Bureau County ranks highest compared with other Illinois counties.
Bureau County gets more hard-freeze nights than most of Illinois. It averaged 127 freezing nights a year over 2015–2024, 48 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 102 Illinois counties that's 9th.
On January 31, 2019 the low fell to about -26°F, and in the stretch ending February 2021 the county went 16 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
Most freezing nights fall from November to March, peaking in January. Disconnect garden hoses and shut off outdoor spigots before the first hard frost, and keep the heat at 55°F or higher if you'll be away.
Freezing nights typically start around Oct 22 and end around Apr 24.
Bureau gets fewer downpours than most Illinois counties, but they still fill basements. The county gets about 39.1 inches of rain and melted snow a year, with 7 days of an inch or more (81st of 102). Those downpours cluster in June, July and September, when sump pumps and gutters are tested hardest. The wettest day on record brought 3.24 inches on September 28, 2019. The worst three-day stretch dropped 4.17 inches, ending July 22, 2017, the kind of soaking that overwhelms sump pumps and storm sewers.
About 92 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
Roughly 79% of the county's housing was built before 1980. That puts Bureau among the oldest housing stocks of Illinois's 102 counties.
Before 1960 is when 53% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 30 times a year here, below the Illinois county median of 51. 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 expectBy main heating fuel, Bureau County homes break down as 68% utility gas, 15% electric, 15% propane and under 1% wood. Heating equipment, cooking and electrical failures cause most home fires nationally. Even a small kitchen fire can leave soot through the whole house, because smoke follows air currents into closets, ducts and attic space.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Bureau County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Bureau gets more pipe-freeze nights than any of its neighbors. Stark County has the oldest housing nearby, with 81% of homes built before 1980.
By the numbers
| Factor | Bureau | Illinois median | Rank |
|---|---|---|---|
| Homes built before 1960 | 53% | 38% | 7 of 102 |
| Homes built before 1980 | 79% | 66% | 7 of 102 |
| Homes built 2000 or later | 8.4% | 15% | 92 of 102 |
| Manufactured or mobile homes | 2.3% | 5.6% | 82 of 102 |
| Vacant homes | 10% | 11% | 59 of 102 |
| Wood or propane heat | 15% | 17% | 60 of 102 |
| Nights at 20°F or colder | 48/yr | 35/yr | 9 of 102 |
| Days with 1 inch+ of rain | 7/yr | 8.4/yr | 81 of 102 |
| Freeze-thaw days | 92/yr | 81/yr | 1 of 102 |
| Muggy nights (65°F+) | 30/yr | 51/yr | 91 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 Bureau County: freezing from November to March, heavy rain in June, July and September.
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