Data / Rankings / Diagnosed diabetes in adults, local model estimate / Counties in Washington

Counties in Washington by diagnosed diabetes in adults, local model estimate

Ferry County had the highest diagnosed diabetes in adults, local model estimate of 39 counties in 2021, at 15.4%. Whitman County had the lowest, at 7.1%. The median was 11.1%. Source: the Centers for Disease Control and Prevention.

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Highest15.4Ferry County
Lowest7.1Whitman County
Median11.139 counties

Map of counties, 2021

Adams County: 12.9 %Asotin County: 12.1 %Benton County: 9.6 %Chelan County: 10.5 %Clallam County: 12.2 %Clark County: 9.2 %Columbia County: 12 %Cowlitz County: 10.8 %Douglas County: 11.1 %Ferry County: 15.4 %Franklin County: 10.4 %Garfield County: 11.9 %Grant County: 11.1 %Grays Harbor County: 12.8 %Island County: 10.2 %Jefferson County: 12.3 %King County: 7.3 %Kitsap County: 9.7 %Kittitas County: 8.9 %Klickitat County: 11.8 %Lewis County: 11.3 %Lincoln County: 11.7 %Mason County: 11.7 %Okanogan County: 13.6 %Pacific County: 13.9 %Pend Oreille County: 12.3 %Pierce County: 10 %San Juan County: 10.8 %Skagit County: 10.2 %Skamania County: 11.3 %Snohomish County: 8.8 %Spokane County: 9.8 %Stevens County: 12.2 %Thurston County: 9.9 %Wahkiakum County: 13.5 %Walla Walla County: 10.1 %Whatcom County: 8.7 %Whitman County: 7.1 %Yakima County: 12.7 %
  • Under 9.6
  • 9.6 to 10
  • 10 to 11
  • 11 to 12
  • 12 to 13
  • 13 and over
%, 2021. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Ferry County: 15.4 %Ferry County15.4Pacific County: 13.9 %Pacific County13.9Okanogan County: 13.6 %Okanogan County13.6Wahkiakum County: 13.5 %Wahkiakum County13.5Adams County: 12.9 %Adams County12.9Grays Harbor County: 12.8 %Grays Harbor County12.8Yakima County: 12.7 %Yakima County12.7Jefferson County: 12.3 %Jefferson County12.3Pend Oreille County: 12.3 %Pend Oreille County12.3Clallam County: 12.2 %Clallam County12.2Stevens County: 12.2 %Stevens County12.2Asotin County: 12.1 %Asotin County12.1Columbia County: 12 %Columbia County12Garfield County: 11.9 %Garfield County11.9Klickitat County: 11.8 %Klickitat County11.8Lincoln County: 11.7 %Lincoln County11.7Mason County: 11.7 %Mason County11.7Lewis County: 11.3 %Lewis County11.3Skamania County: 11.3 %Skamania County11.3Douglas County: 11.1 %Douglas County11.1Grant County: 11.1 %Grant County11.1Cowlitz County: 10.8 %Cowlitz County10.8San Juan County: 10.8 %San Juan County10.8Chelan County: 10.5 %Chelan County10.5Franklin County: 10.4 %Franklin County10.4Island County: 10.2 %Island County10.2Skagit County: 10.2 %Skagit County10.2Walla Walla County: 10.1 %Walla Walla County10.1Pierce County: 10 %Pierce County10Thurston County: 9.9 %Thurston County9.9Spokane County: 9.8 %Spokane County9.8Kitsap County: 9.7 %Kitsap County9.7Benton County: 9.6 %Benton County9.6Clark County: 9.2 %Clark County9.2Kittitas County: 8.9 %Kittitas County8.9Snohomish County: 8.8 %Snohomish County8.8Whatcom County: 8.7 %Whatcom County8.7King County: 7.3 %King County7.3Whitman County: 7.1 %Whitman County7.1Ferry County: 15.4 %Ferry County15.4Pacific County: 13.9 %Pacific County13.9Okanogan County: 13.6 %Okanogan County13.6Wahkiakum County: 13.5 %Wahkiakum County13.5Adams County: 12.9 %Adams County12.9Grays Harbor County: 12.8 %Grays Harbor County12.8Yakima County: 12.7 %Yakima County12.7Jefferson County: 12.3 %Jefferson County12.3Pend Oreille County: 12.3 %Pend Oreille County12.3Clallam County: 12.2 %Clallam County12.2Stevens County: 12.2 %Stevens County12.2Asotin County: 12.1 %Asotin County12.1Columbia County: 12 %Columbia County12Garfield County: 11.9 %Garfield County11.9Klickitat County: 11.8 %Klickitat County11.8Lincoln County: 11.7 %Lincoln County11.7Mason County: 11.7 %Mason County11.7Lewis County: 11.3 %Lewis County11.3Skamania County: 11.3 %Skamania County11.3Douglas County: 11.1 %Douglas County11.1Grant County: 11.1 %Grant County11.1Cowlitz County: 10.8 %Cowlitz County10.8San Juan County: 10.8 %San Juan County10.8Chelan County: 10.5 %Chelan County10.5Franklin County: 10.4 %Franklin County10.4Island County: 10.2 %Island County10.2Skagit County: 10.2 %Skagit County10.2Walla Walla County: 10.1 %Walla Walla County10.1Pierce County: 10 %Pierce County10Thurston County: 9.9 %Thurston County9.9Spokane County: 9.8 %Spokane County9.8Kitsap County: 9.7 %Kitsap County9.7Benton County: 9.6 %Benton County9.6Clark County: 9.2 %Clark County9.2Kittitas County: 8.9 %Kittitas County8.9Snohomish County: 8.8 %Snohomish County8.8Whatcom County: 8.7 %Whatcom County8.7King County: 7.3 %King County7.3Whitman County: 7.1 %Whitman County7.1
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Ferry County15.4
2Pacific County13.9
3Okanogan County13.6
4Wahkiakum County13.5
5Adams County12.9
6Grays Harbor County12.8
7Yakima County12.7
8Jefferson County12.3
8Pend Oreille County12.3
10Clallam County12.2
10Stevens County12.2
12Asotin County12.1
13Columbia County12
14Garfield County11.9
15Klickitat County11.8
16Lincoln County11.7
16Mason County11.7
18Lewis County11.3
18Skamania County11.3
20Douglas County11.1
20Grant County11.1
22Cowlitz County10.8
22San Juan County10.8
24Chelan County10.5
25Franklin County10.4
26Island County10.2
26Skagit County10.2
28Walla Walla County10.1
29Pierce County10
30Thurston County9.9
31Spokane County9.8
32Kitsap County9.7
33Benton County9.6
34Clark County9.2
35Kittitas County8.9
36Snohomish County8.8
37Whatcom County8.7
38King County7.3
39Whitman County7.1

Other periods

About this ranking

Percentage of adults who report being told by a doctor or other health professional that they have diabetes, other than diabetes only during pregnancy. Model-based estimate for adults aged 18 and over from CDC PLACES. Crude prevalence, not age-adjusted.

US counties and cities (incorporated places of 10,000 or more). CDC PLACES combines Behavioral Risk Factor Surveillance System (BRFSS) answers with local population data through multilevel regression and poststratification, so a county or city value is a model estimate, not a survey count. The year is the BRFSS survey year, not the release year. CDC says the method does not support tracking change in a place over time, and each annual release can change the model, so values for different years are not strictly comparable. A state is missing in a year when its BRFSS data did not meet standards (Kentucky and Pennsylvania in 2023, Florida in 2021). Connecticut counties appear as its nine planning regions from 2022; its eight former counties are not served. City values for 2021 come from the 2023 release, built on 2010 Census place boundaries; later years use 2020 boundaries.

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

Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

Centers for Disease Control and Prevention. (2025). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence (Counties in Washington by diagnosed diabetes in adults, local model estimate, 2021) [Data set]. Retrieved October 12, 2026, from https://www.cdc.gov/places/

MLA 9

PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in Washington by diagnosed diabetes in adults, local model estimate, 2021. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/washington-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

Centers for Disease Control and Prevention. 2025. PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Counties in Washington by diagnosed diabetes in adults, local model estimate, 2021. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/washington-counties?period=2021.

Harvard

Centers for Disease Control and Prevention (2025) PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in Washington by diagnosed diabetes in adults, local model estimate, 2021 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/washington-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_washington_by_2021,
  author = {{Centers for Disease Control and Prevention}},
  title = {{PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in Washington by diagnosed diabetes in adults, local model estimate, 2021}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www.cdc.gov/places/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/washington-counties?period=2021. Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.},
}
RIS
TY  - DATA
AU  - Centers for Disease Control and Prevention
TI  - PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in Washington by diagnosed diabetes in adults, local model estimate, 2021
PY  - 2025
DA  - 2025/12/04
PB  - Centers for Disease Control and Prevention
DB  - Invokely
UR  - https://www.cdc.gov/places/
L2  - https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/washington-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/washington-counties?period=2021.
N1  - Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.
ER  -
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Questions

Which county has the highest diagnosed diabetes in adults, local model estimate?

Ferry County, with 15.4% in 2021, according to the Centers for Disease Control and Prevention.

Which county has the lowest diagnosed diabetes in adults, local model estimate?

Whitman County, with 7.1% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Diagnosed diabetes in adults, local model estimate: other rankings

Counties in Washington: more rankings