Counties

Water damage help by Illinois county

Each county page combines Census housing data with ten years of daily NOAA weather data, so the advice fits the homes and winters where you live.

Counties with a local guide

County	Seat	Homes	Built pre-1980	Freeze nights ≤ 20°F	1"+ rain days
Adams	Quincy	30,302	71%	36	8.7
Alexander	Cairo	2,938	70%	16	12.7
Bond	Greenville	6,899	58%	27	9.6
Boone	Belvidere	20,291	45%	52	7.2
Brown	Mount Sterling	2,321	74%	37	8.8
Bureau	Princeton	15,630	79%	48	7
Calhoun	Hardin	2,300	62%	30	8.7
Carroll	Mount Carroll	8,204	71%	52	8.4
Cass	Virginia	5,676	66%	38	7.4
Champaign	Urbana	95,115	48%	36	6.6
Christian	Taylorville	15,184	75%	33	8.4
Clark	Marshall	7,307	64%	29	9.3
Clay	Louisville	6,165	58%	24	12.6
Clinton	Carlyle	15,765	55%	24	10.7
Coles	Charleston	22,681	65%	30	8.3
Cook	Chicago	2,276,493	73%	40	6.3
Crawford	Robinson	8,457	70%	26	10.5
Cumberland	Toledo	4,726	63%	28	10.2
De Witt	Clinton	7,320	76%	37	6.3
DeKalb	Sycamore	41,678	53%	50	6.9
Douglas	Tuscola	8,507	68%	32	7.1
DuPage	Wheaton	367,152	54%	45	6.6
Edgar	Paris	8,214	76%	32	8
Edwards	Albion	3,045	66%	21	11.9
Effingham	Effingham	15,413	54%	28	10.3
Fayette	Vandalia	8,808	64%	28	10.5
Ford	Paxton	6,263	82%	40	7.9
Franklin	Benton	18,462	70%	21	11.5
Fulton	Lewistown	15,848	79%	40	8.4
Gallatin	Shawneetown	2,505	72%	19	10.7
Greene	Carrollton	5,785	76%	31	8.7
Grundy	Morris	21,384	42%	43	6
Hamilton	McLeansboro	3,803	61%	20	10.2
Hancock	Carthage	8,938	74%	39	8.1
Hardin	Elizabethtown	2,337	59%	18	13.2
Henderson	Oquawka	3,366	67%	44	7.5
Henry	Cambridge	22,210	79%	47	8
Iroquois	Watseka	12,789	78%	40	6.5
Jackson	Murphysboro	27,727	58%	21	11.8
Jasper	Newton	4,226	56%	25	10.8
Jefferson	Mount Vernon	16,629	55%	23	11.2
Jersey	Jerseyville	9,958	57%	28	9.3
Jo Daviess	Galena	13,440	55%	57	8.8
Johnson	Vienna	5,541	44%	19	13.7
Kane	Geneva	190,921	45%	48	7.2
Kankakee	Kankakee	45,415	65%	41	6.1
Kendall	Yorkville	46,589	24%	46	6.7
Knox	Galesburg	23,758	81%	45	7.7
Lake	Waukegan	270,618	46%	44	6.9
LaSalle	Ottawa	49,843	70%	46	6.3
Lawrence	Lawrenceville	6,407	72%	24	12.6
Lee	Dixon	14,995	72%	48	8
Livingston	Pontiac	15,930	75%	42	6.9
Logan	Lincoln	11,967	78%	36	7.1
Macon	Decatur	49,630	75%	34	7
Macoupin	Carlinville	21,139	68%	31	8.4
Madison	Edwardsville	119,168	61%	26	10
Marion	Salem	17,334	62%	25	12
Marshall	Lacon	5,815	77%	44	6.8
Mason	Havana	6,622	82%	37	7.3
Massac	Metropolis	6,822	57%	17	13.8
McDonough	Macomb	13,587	72%	41	9.6
McHenry	Woodstock	121,329	38%	51	7.6
McLean	Bloomington	75,305	49%	40	7
Menard	Petersburg	5,600	56%	36	7.6
Mercer	Aledo	7,285	77%	48	7.2
Monroe	Waterloo	14,759	41%	22	9.5
Montgomery	Hillsboro	12,495	71%	31	8.9
Morgan	Jacksonville	15,016	73%	36	9
Moultrie	Sullivan	6,240	68%	32	7.5
Ogle	Oregon	22,682	63%	50	7.9
Peoria	Peoria	84,930	70%	40	7.3
Perry	Pinckneyville	9,152	61%	23	11.4
Piatt	Monticello	7,412	63%	35	6.3
Pike	Pittsfield	7,273	76%	33	8.8
Pope	Golconda	2,225	42%	18	13.7
Pulaski	Mound City	2,851	62%	16	13.3
Putnam	Hennepin	3,090	58%	46	5.9
Randolph	Chester	13,422	64%	22	10
Richland	Olney	7,363	65%	23	11.8
Rock Island	Rock Island	66,759	76%	47	7.7
Saline	Harrisburg	11,547	66%	20	11.4
Sangamon	Springfield	93,382	62%	34	7.8
Schuyler	Rushville	3,306	69%	38	9.1
Scott	Winchester	2,384	73%	35	8.4
Shelby	Shelbyville	10,060	67%	31	9.9
St. Clair	Belleville	115,630	55%	24	10.6
Stark	Toulon	2,573	81%	47	6.8
Stephenson	Freeport	21,330	75%	56	9
Tazewell	Pekin	58,731	72%	38	7.6
Union	Jonesboro	7,851	59%	19	12.9
Vermilion	Danville	34,327	79%	37	6.2
Wabash	Mount Carmel	5,410	68%	22	12.5
Warren	Monmouth	7,587	84%	46	6.8
Washington	Nashville	6,415	63%	24	11.5
Wayne	Fairfield	7,680	58%	21	11.7
White	Carmi	6,730	72%	20	10.9
Whiteside	Morrison	25,837	78%	48	8.6
Will	Joliet	254,278	37%	42	7
Williamson	Marion	32,084	49%	20	11.3
Winnebago	Rockford	125,002	63%	52	7.8
Woodford	Eureka	15,758	62%	41	7.5

Housing: ACS 2020-2024. Weather: NOAA nClimGrid-Daily, 2015–2024, per year.

Other Illinois counties

We're adding these. Until then, the call line still works anywhere in Illinois, and the nearest county guide is linked.