Data / Rankings / County house price index, 1990 = 100 / Counties in Illinois

Counties in Illinois by county house price index, 1990 = 100, 2025

Adams County had the highest county house price index, 1990 = 100 of 55 counties in 2025, at 335.89 index. Vermilion County had the lowest, at 236.81 index. The median was 282.67 index. Source: the Federal Housing Finance Agency.

Highest335.89Adams County
Lowest236.81Vermilion County
Median282.6755 counties

All counties, 2025

CSVChart (SVG)

Adams CountyAdams County: 335.89 index335.89Ford CountyFord County: 333.03 index333.03Douglas CountyDouglas County: 321.35 index321.35Fayette CountyFayette County: 321.34 index321.34Henry CountyHenry County: 314.65 index314.65Franklin CountyFranklin County: 311.83 index311.83Clinton CountyClinton County: 310.89 index310.89Marion CountyMarion County: 310.58 index310.58Monroe CountyMonroe County: 309.23 index309.23Rock Island CountyRock Island County: 307.8 index307.8DuPage CountyDuPage County: 307.46 index307.46Fulton CountyFulton County: 306.39 index306.39Christian CountyChristian County: 305.18 index305.18Woodford CountyWoodford County: 304.82 index304.82Tazewell CountyTazewell County: 300.15 index300.15Macoupin CountyMacoupin County: 296.38 index296.38Grundy CountyGrundy County: 293.68 index293.68Jo Daviess CountyJo Daviess County: 292.81 index292.81Cook CountyCook County: 290.42 index290.42LaSalle CountyLaSalle County: 288.03 index288.03Madison CountyMadison County: 287.75 index287.75Livingston CountyLivingston County: 286.58 index286.58Champaign CountyChampaign County: 286.42 index286.42Lee CountyLee County: 285.52 index285.52Piatt CountyPiatt County: 284.57 index284.57McLean CountyMcLean County: 283.53 index283.53Knox CountyKnox County: 282.78 index282.78Williamson CountyWilliamson County: 282.67 index282.67Will CountyWill County: 282.55 index282.55Kankakee CountyKankakee County: 275.38 index275.38Kane CountyKane County: 275.34 index275.34Kendall CountyKendall County: 274.87 index274.87Ogle CountyOgle County: 270.59 index270.59Whiteside CountyWhiteside County: 267.26 index267.26Jersey CountyJersey County: 263.46 index263.46Montgomery CountyMontgomery County: 262.46 index262.46Peoria CountyPeoria County: 260.79 index260.79Bureau CountyBureau County: 259.43 index259.43Logan CountyLogan County: 259.31 index259.31De Witt CountyDe Witt County: 259.11 index259.11DeKalb CountyDeKalb County: 258.21 index258.21Lake CountyLake County: 257.17 index257.17Coles CountyColes County: 257.06 index257.06Jefferson CountyJefferson County: 256.88 index256.88Winnebago CountyWinnebago County: 256.75 index256.75McHenry CountyMcHenry County: 253.26 index253.26Boone CountyBoone County: 252.44 index252.44McDonough CountyMcDonough County: 250.68 index250.68Stephenson CountyStephenson County: 250.54 index250.54Morgan CountyMorgan County: 250.32 index250.32St. Clair CountySt. Clair County: 249.56 index249.56Sangamon CountySangamon County: 240.55 index240.55Macon CountyMacon County: 240.18 index240.18Jackson CountyJackson County: 238.85 index238.85Vermilion CountyVermilion County: 236.81 index236.81
index. Source: FHFA. Retrieved 2026-10-10.

Full ranking

RankCounties2025
index		Change on 2024
1Adams County335.89+25.03
2Ford County333.03+14.37
3Douglas County321.35+21.47
4Fayette County321.34-12.19
5Henry County314.65+15.59
6Franklin County311.83+1.39
7Clinton County310.89+16.16
8Marion County310.58+18.06
9Monroe County309.23+18.97
10Rock Island County307.8+9.51
11DuPage County307.46+18.06
12Fulton County306.39+24.82
13Christian County305.18+22.86
14Woodford County304.82+17.3
15Tazewell County300.15+18.96
16Macoupin County296.38+14.67
17Grundy County293.68+18.46
18Jo Daviess County292.81+21.32
19Cook County290.42+15.2
20LaSalle County288.03+21.59
21Madison County287.75+18.04
22Livingston County286.58+8.15
23Champaign County286.42+19.21
24Lee County285.52+23.01
25Piatt County284.57+3.38
26McLean County283.53+13.56
27Knox County282.78+14.75
28Williamson County282.67+13.57
29Will County282.55+12.43
30Kankakee County275.38+7.95
31Kane County275.34+14.98
32Kendall County274.87+17.79
33Ogle County270.59+17.39
34Whiteside County267.26+10.23
35Jersey County263.46+18.04
36Montgomery County262.46-8.79
37Peoria County260.79+15.74
38Bureau County259.43+10.26
39Logan County259.31+19.01
40De Witt County259.11+1.87
41DeKalb County258.21+15.58
42Lake County257.17+16.2
43Coles County257.06+3.93
44Jefferson County256.88+8.84
45Winnebago County256.75+18.12
46McHenry County253.26+14.01
47Boone County252.44+17.88
48McDonough County250.68+0.76
49Stephenson County250.54+27.53
50Morgan County250.32+17.94
51St. Clair County249.56+12.55
52Sangamon County240.55+10.31
53Macon County240.18+11.67
54Jackson County238.85+19.3
55Vermilion County236.81+16.75

Other periods

About this ranking

Annual FHFA all-transactions index of single-family house prices in US counties, with 1990 equal to 100.

Developmental nominal index, not seasonally adjusted. Uses sale prices and refinance appraisals for mortgages purchased or guaranteed by Fannie Mae or Freddie Mac. Differs from purchase-only indexes. Missing estimates and unavailable base-year values remain absent. Historical estimates can be revised.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

Federal Housing Finance Agency (FHFA). FHFA developmental all-transactions county house price index, annual, nominal, not seasonally adjusted, 1990 = 100. https://www.fhfa.gov/hpi/download/annual/hpi_at_county.xlsx. Retrieved 2026-10-10.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Illinois by county house price index, 1990 = 100 using official data, and cite the source.
rank_places {"indicator":"house_price_index_us_county_annual_1990","level":"province","within":"Illinois","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=house_price_index_us_county_annual_1990&level=province&within=Illinois&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest county house price index, 1990 = 100?

Adams County, with 335.89 index in 2025, according to the Federal Housing Finance Agency.

Which county has the lowest county house price index, 1990 = 100?

Vermilion County, with 236.81 index in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Federal Housing Finance Agency, FHFA developmental all-transactions county house price index, annual, nominal, not seasonally adjusted, 1990 = 100. Retrieved 2026-10-10.

County house price index, 1990 = 100: other rankings

Counties in Illinois: more rankings