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

Name: Counties in Washington by county house price index, 1990 = 100, 2018
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 2018, at 391.02 index. Clallam County had the lowest, at 278.47 index. The median was 320.48 index. Source: the Federal Housing Finance Agency.

Highest391.02Kittitas County

Lowest278.47Clallam County

Median320.4829 counties

All counties, 2018

CSV Chart (SVG)

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

Full ranking

Rank	Counties	2018 index	Change on 2017
1	Kittitas County	391.02	+36.98
2	King County	378.74	+31.81
3	Walla Walla County	375.98	+23.53
4	Chelan County	365.64	+29.59
5	Clark County	358.31	+26.5
6	Douglas County	353.29	+28.95
7	Whatcom County	352.33	+30.65
8	Asotin County	343.58	+29.17
9	Lewis County	339.32	+31.9
10	Pierce County	335.63	+34.13
11	Kitsap County	331.49	+32.02
12	Mason County	326.98	+32.12
13	Thurston County	326.74	+30.36
14	Snohomish County	321.32	+29.58
15	Skagit County	320.48	+30.1
16	Jefferson County	318.27	+25.7
17	Cowlitz County	317.46	+31.21
18	Adams County	314.42	+27.59
19	Island County	309.43	+23.4
20	Spokane County	308.28	+31.67
21	Stevens County	304.86	+20.58
22	Franklin County	304.56	+29.94
23	Whitman County	302.15	+22.77
24	Grays Harbor County	301.7	+33.77
25	Okanogan County	298.67	+9.41
26	Yakima County	291.52	+27.37
27	Grant County	288.06	+21.35
28	Benton County	278.74	+22.07
29	Clallam County	278.47	+25.32

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 391.02 index in 2018, according to the Federal Housing Finance Agency.

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

Clallam County, with 278.47 index in 2018.

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.