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

Name: Counties in Washington by county house price index, 1990 = 100, 2020
Creator: Federal Housing Finance Agency
License: Public domain (US government work); citation requested

Kittitas County had the highest county house price index, 1990 = 100 of 29 counties in 2020, at 433.44 index. Clallam County had the lowest, at 312.66 index. The median was 368.09 index. Source: the Federal Housing Finance Agency.

Highest433.44Kittitas County

Lowest312.66Clallam County

Median368.0929 counties

All counties, 2020

CSV Chart (SVG)

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

Full ranking

Rank	Counties	2020 index	Change on 2019
1	Kittitas County	433.44	+17.35
2	Walla Walla County	429.24	+17.17
3	Chelan County	411.66	+19.74
4	Lewis County	403.97	+28.65
5	King County	398.93	+13.42
6	Douglas County	397.98	+14.2
7	Whatcom County	396.43	+18.04
8	Clark County	392.71	+16.21
9	Pierce County	388.3	+26.68
10	Mason County	381.48	+24.79
11	Asotin County	377.32	+19.25
12	Kitsap County	375.42	+21
13	Thurston County	375.07	+25.21
14	Adams County	370.41	+31.53
15	Spokane County	368.09	+25.18
16	Cowlitz County	367.48	+20.12
17	Skagit County	364.97	+20.2
18	Grays Harbor County	362.55	+27.09
19	Jefferson County	358.02	+17.74
20	Stevens County	355.88	+23.84
21	Snohomish County	352.29	+16.88
22	Franklin County	350.67	+21.79
23	Island County	344.04	+17.8
24	Whitman County	342.05	+17.3
25	Okanogan County	336.52	+20.58
26	Yakima County	333.44	+19.5
27	Grant County	329.47	+19.65
28	Benton County	324.07	+17.3
29	Clallam County	312.66	+12.31

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?

Kittitas County, with 433.44 index in 2020, according to the Federal Housing Finance Agency.

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

Clallam County, with 312.66 index in 2020.

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.