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Incidence Rates Table

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Incidence Rate Report for Washington by County

Breast (Late Stage^), 2018-2022

All Races (includes Hispanic), Female, All Ages

Sorted by Rate

County
 sort alphabetically by name ascending
2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Age-Adjusted Incidence Rate
cases per 100,000
(95% Confidence Interval)
 sort by rate descending
CI*Rank
(95% Confidence Interval)
 sort by CI rank descending
Average Annual Count
 sort by count descending
Percent of Cases with Late Stage
 sort by percent late descending
Washington 1 N/A 43.9 (43.0, 44.9) N/A 1,936 30.6
US (SEER+NPCR) 1 N/A 42.4 (42.3, 42.5) N/A 83,714 31.0
Whitman County 2 Rural 22.2 (13.5, 34.4) 32 (21, 32) 4 21.9
Asotin County 2 Urban 25.7 (14.2, 42.9) 31 (9, 32) 3 28.3
Kittitas County 2 Rural 30.5 (21.2, 42.7) 30 (11, 32) 8 29.1
Pacific County 2 Rural 33.3 (23.1, 48.4) 29 (4, 32) 9 30.5
Stevens County 2 Urban 33.4 (24.4, 44.9) 28 (6, 32) 11 25.4
Clark County 2 Urban 33.8 (30.8, 37.0) 27 (19, 31) 100 26.8
Douglas County 2 Urban 34.0 (24.4, 46.4) 26 (5, 32) 9 26.8
Pend Oreille County 2 Rural 34.3 (18.7, 59.5) 25 (1, 32) 4 31.0
Jefferson County 7 Rural 35.2 (23.9, 50.9) 24 (3, 32) 11 25.7
Cowlitz County 2 Urban 36.1 (30.0, 43.2) 23 (11, 31) 27 35.0
Spokane County 2 Urban 36.3 (33.2, 39.5) 22 (16, 29) 116 26.7
Franklin County 2 Urban 37.1 (29.1, 46.6) 21 (5, 31) 15 34.2
Mason County 7 Rural 38.1 (29.5, 48.6) 20 (4, 31) 17 27.4
Lewis County 2 Rural 39.2 (31.6, 48.1) 19 (4, 30) 22 33.0
Walla Walla County 2 Urban 41.5 (31.8, 53.2) 18 (2, 31) 14 27.7
Clallam County 7 Rural 41.9 (33.9, 51.4) 17 (2, 29) 27 27.2
Grant County 2 Rural 42.0 (34.2, 51.0) 16 (3, 29) 22 35.9
Benton County 2 Urban 42.1 (36.8, 48.0) 15 (5, 26) 48 31.4
Whatcom County 7 Urban 43.2 (38.1, 48.9) 14 (4, 24) 57 28.7
Grays Harbor County 7 Rural 45.3 (36.8, 55.3) 13 (1, 27) 24 36.6
Okanogan County 2 Rural 45.9 (33.6, 61.1) 12 (1, 30) 11 29.4
King County 7 Urban 46.2 (44.5, 48.0) 11 (5, 16) 564 30.6
Klickitat County 2 Rural 46.8 (32.7, 65.8) 10 (1, 30) 9 42.6
Pierce County 7 Urban 47.1 (44.4, 49.9) 9 (3, 17) 237 31.9
Kitsap County 7 Urban 47.7 (42.9, 52.9) 8 (2, 19) 82 33.2
Thurston County 7 Urban 47.8 (43.3, 52.7) 7 (2, 18) 90 32.1
Snohomish County 7 Urban 48.1 (45.2, 51.1) 6 (3, 16) 221 30.3
Yakima County 2 Urban 49.0 (43.6, 54.8) 5 (1, 18) 64 39.0
San Juan County 7 Rural 53.1 (35.4, 78.1) 4 (1, 30) 8 28.3
Skagit County 7 Urban 53.1 (45.8, 61.3) 3 (1, 16) 45 33.6
Chelan County 2 Urban 55.6 (45.9, 66.8) 2 (1, 17) 26 35.0
Island County 7 Rural 57.3 (47.7, 68.3) 1 (1, 15) 33 34.2
Adams County 2 Rural
*
*
3 or fewer
*
Columbia County 2 Rural
*
*
3 or fewer
*
Ferry County 2 Rural
*
*
3 or fewer
*
Garfield County 2 Rural
*
*
3 or fewer
*
Lincoln County 2 Rural
*
*
3 or fewer
*
Skamania County 2 Urban
*
*
3 or fewer
*
Wahkiakum County 2 Rural
*
*
3 or fewer
*

Notes:
Created by statecancerprofiles.cancer.gov on 03/11/2026 8:52 pm.

State Cancer Registries may provide more current or more local data.

Trend
Rising when 95% confidence interval of average annual percent change is above 0.
Stable when 95% confidence interval of average annual percent change includes 0.
Falling when 95% confidence interval of average annual percent change is below 0.


† Incidence rates (cases per 100,000 population per year) are age-adjusted to the 2000 US standard population (SEER areas use 20 age groups and NPCR areas use 19 age groups). Rates are for invasive cancer only (except for bladder cancer which is invasive and in situ) or unless otherwise specified. Rates calculated using SEER*Stat. Population counts for denominators are based on Census populations as modified by NCI. The US Population Data File is used for SEER and NPCR incidence rates.

Rates are computed using cancers classified as malignant based on ICD-O-3. For more information see malignant.html.

^ Late Stage is defined as cases determined to be regional or distant. Due to changes in stage coding, Combined Summary Stage with Expanded Regional Codes (2004+) is used for data from Surveillance, Epidemiology, and End Results (SEER) databases and Merged Summary Stage is used for data from National Program of Cancer Registries databases. Due to the increased complexity with staging, other staging variables maybe used if necessary.

⋔ Results presented with the CI*Rank statistics help show the usefulness of ranks. For example, ranks for relatively rare diseases or less populated areas may be essentially meaningless because of their large variability, but ranks for more common diseases in densely populated regions can be very useful. The rates used in CI*Rank are all age-adjusted to the 2000 US standard population using 19 age groups for SEER and NPCR areas. More information about methodology can be found on the CI*Rank website.

When displaying county information, the CI*Rank for the state is not shown because it's not comparable. To see the state CI*Rank please view the statistics at the US By State level.

Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.

1 Source: National Program of Cancer Registries and Surveillance, Epidemiology, and End Results SEER*Stat Database - United States Department of Health and Human Services, Centers for Disease Control and Prevention and National Cancer Institute. Based on the 2024 submission.

2 Source: National Program of Cancer Registries SEER*Stat Database - United States Department of Health and Human Services, Centers for Disease Control and Prevention (based on the 2024 submission).

7 Source: SEER November 2024 submission.

* Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 records were reported in a specific area-sex-race category.

Data for United States does not include Puerto Rico.

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