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

Name: Counties in Washington by county house price index, 1990 = 100, 2025
Creator: Federal Housing Finance Agency
License: Public domain (US government work); citation requested

Walla Walla County had the highest county house price index, 1990 = 100 of 29 counties in 2025, at 646.38 index. Benton County had the lowest, at 471.92 index. The median was 555.28 index. Source: the Federal Housing Finance Agency.

Highest646.38Walla Walla County

Lowest471.92Benton County

Median555.2829 counties

All counties, 2025

CSV Chart (SVG)

index. Source: FHFA. Retrieved 2026-10-10.

Full ranking

Rank	Counties	2025 index	Change on 2024
1	Walla Walla County	646.38	+30.68
2	Kittitas County	633.13	+10.21
3	Lewis County	617.32	+21.55
4	Chelan County	610.15	+15.06
5	Whatcom County	594.14	+12.09
6	Mason County	589.37	+26.91
7	Adams County	580.4	+12.09
8	Asotin County	575.97	+24.11
9	Douglas County	573.66	+4.93
10	Pierce County	565.19	+15.86
11	Grays Harbor County	564.26	+16.96
12	Clark County	559.77	+11.22
13	Skagit County	557.44	+21.87
14	Thurston County	556.16	+12.47
15	Spokane County	555.28	+14.08
16	King County	544.58	+4.79
17	Jefferson County	537.69	+8.06
18	Stevens County	537.23	-9.61
19	Snohomish County	531.27	+6.98
20	Kitsap County	529.83	+13.98
21	Cowlitz County	527.02	+18.88
22	Okanogan County	525.66	-8.23
23	Island County	511.68	+11.05
24	Grant County	507.7	+3.36
25	Franklin County	499.25	+2.68
26	Whitman County	491.09	+4.99
27	Yakima County	483.6	+16.99
28	Clallam County	483.41	+12.67
29	Benton County	471.92	+14.13

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.

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Rank Counties in Washington by county house price index, 1990 = 100 using official data, and cite the source.

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Questions

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

Walla Walla County, with 646.38 index in 2025, according to the Federal Housing Finance Agency.

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

Benton County, with 471.92 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.