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Incidence Rates Table

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Incidence Rate Report for California by County

Breast (All Stages^), 2018-2022

All Races (includes Hispanic), Female, All Ages

Sorted by Recentaapc

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
Recent Trend
Recent 5-Year Trend in Incidence Rates
(95% Confidence Interval)
 sort by trend descending
California 7 N/A 125.6 (125.0, 126.3) N/A 28,877 rising rising trend 0.3 (0.1, 0.6)
US (SEER+NPCR) 1 N/A 131.3 (131.1, 131.6) N/A 270,245 rising rising trend 0.6 (0.5, 0.8)
Lassen County 7 Rural 92.7 (72.0, 117.8) 53 (24, 56) 15 stable stable trend -19.2 (-38.3, 1.1)
Modoc County 7 Rural 55.9 (35.6, 88.3) 56 (51, 56) 5 falling falling trend -6.3 (-11.0, -4.2)
Del Norte County 7 Rural 66.1 (48.6, 88.1) 55 (51, 56) 11 falling falling trend -2.7 (-5.2, -0.4)
Trinity County 7 Rural 66.8 (45.1, 96.4) 54 (45, 56) 8 stable stable trend -2.1 (-4.7, 0.5)
Yuba County 7 Urban 97.6 (84.0, 112.6) 50 (33, 54) 39 falling falling trend -1.7 (-2.8, -0.7)
Amador County 7 Rural 124.7 (105.1, 147.3) 28 (1, 52) 40 stable stable trend -0.9 (-2.5, 0.8)
Mendocino County 7 Rural 112.4 (100.3, 125.7) 45 (18, 52) 75 stable stable trend -0.8 (-1.8, 0.1)
Tehama County 7 Rural 117.5 (103.1, 133.6) 37 (7, 52) 54 stable stable trend -0.7 (-1.6, 0.3)
Nevada County 7 Rural 129.9 (117.6, 143.3) 20 (2, 44) 109 stable stable trend -0.6 (-1.5, 0.3)
Madera County 7 Urban 97.3 (88.1, 107.3) 51 (41, 54) 84 stable stable trend -0.5 (-1.3, 0.5)
Kern County 7 Urban 103.3 (98.9, 107.8) 49 (42, 52) 443 stable stable trend -0.4 (-1.1, 0.3)
Mariposa County 7 Rural 135.3 (106.7, 170.4) 14 (1, 52) 21 stable stable trend -0.4 (-2.4, 1.8)
Imperial County 7 Urban 96.5 (87.5, 106.3) 52 (42, 54) 88 stable stable trend -0.3 (-1.8, 1.3)
Mono County 7 Rural 122.5 (87.4, 167.5) 31 (1, 55) 9 stable stable trend -0.3 (-2.7, 2.4)
Plumas County 7 Rural 117.0 (89.5, 150.9) 38 (1, 54) 18 stable stable trend -0.3 (-2.2, 1.6)
Butte County 7 Urban 130.4 (121.3, 140.1) 18 (4, 38) 172 stable stable trend -0.2 (-0.9, 0.4)
Glenn County 7 Rural 122.8 (99.8, 149.8) 30 (1, 53) 21 stable stable trend -0.2 (-2.2, 1.9)
San Benito County 7 Urban 118.4 (102.4, 136.1) 35 (5, 52) 41 stable stable trend -0.2 (-1.2, 1.1)
Merced County 7 Urban 106.1 (98.3, 114.3) 47 (34, 53) 141 stable stable trend -0.1 (-0.9, 0.8)
Placer County 7 Urban 138.0 (131.6, 144.5) 11 (2, 24) 392 stable stable trend -0.1 (-0.4, 0.4)
Riverside County 7 Urban 114.5 (112.0, 117.1) 44 (32, 46) 1,593 stable stable trend -0.1 (-1.1, 1.2)
San Diego County 7 Urban 130.3 (127.9, 132.6) 19 (13, 28) 2,452 stable stable trend -0.1 (-0.3, 0.2)
San Joaquin County 7 Urban 115.0 (110.4, 119.8) 41 (30, 46) 482 stable stable trend -0.1 (-0.5, 0.4)
Yolo County 7 Urban 143.8 (133.7, 154.4) 4 (1, 23) 159 stable stable trend -0.1 (-1.0, 1.0)
Kings County 7 Urban 108.1 (96.7, 120.3) 46 (26, 53) 69 stable stable trend 0.0 (-2.5, 5.0)
Sacramento County 7 Urban 125.4 (122.1, 128.8) 27 (18, 35) 1,166 stable stable trend 0.0 (-0.4, 1.6)
Sutter County 7 Urban 122.5 (109.7, 136.4) 33 (6, 48) 71 stable stable trend 0.0 (-1.3, 1.4)
Tulare County 7 Urban 104.7 (98.8, 111.0) 48 (39, 52) 239 stable stable trend 0.0 (-0.5, 1.5)
Siskiyou County 7 Rural 114.6 (97.1, 134.6) 43 (4, 53) 40 stable stable trend 0.1 (-1.8, 1.9)
San Bernardino County 7 Urban 114.8 (112.0, 117.7) 42 (31, 46) 1,312 stable stable trend 0.2 (-0.3, 1.8)
Stanislaus County 7 Urban 128.2 (122.4, 134.2) 23 (12, 36) 383 stable stable trend 0.2 (-0.3, 0.9)
Inyo County 7 Rural 129.6 (101.9, 163.0) 21 (1, 53) 19 stable stable trend 0.3 (-2.4, 3.1)
Santa Barbara County 7 Urban 141.5 (134.7, 148.6) 6 (1, 21) 353 stable stable trend 0.3 (-0.2, 1.0)
Shasta County 7 Urban 129.4 (120.2, 139.2) 22 (5, 39) 169 stable stable trend 0.3 (-0.4, 1.1)
Solano County 7 Urban 126.8 (120.8, 133.0) 25 (13, 36) 363 stable stable trend 0.3 (-1.0, 2.8)
Ventura County 7 Urban 139.2 (134.6, 143.9) 10 (3, 20) 732 stable stable trend 0.3 (-0.1, 0.7)
Fresno County 7 Urban 115.3 (111.1, 119.6) 40 (30, 46) 590 stable stable trend 0.4 (-0.3, 3.3)
Humboldt County 7 Rural 117.6 (107.1, 129.0) 36 (14, 49) 103 stable stable trend 0.4 (-1.1, 5.4)
Monterey County 7 Urban 115.7 (109.5, 122.2) 39 (27, 47) 272 stable stable trend 0.5 (-0.2, 1.9)
Orange County 7 Urban 132.3 (130.0, 134.7) 15 (12, 25) 2,549 rising rising trend 0.5 (0.2, 1.0)
Los Angeles County 7 Urban 122.9 (121.6, 124.2) 29 (25, 37) 7,174 rising rising trend 0.6 (0.3, 0.9)
San Luis Obispo County 7 Urban 137.6 (129.5, 146.1) 13 (1, 28) 261 stable stable trend 0.6 (-0.1, 1.3)
San Mateo County 7 Urban 142.7 (137.8, 147.7) 5 (1, 16) 684 rising rising trend 0.6 (0.2, 1.7)
Colusa County 7 Rural 120.6 (93.6, 152.9) 34 (1, 54) 14 stable stable trend 0.8 (-2.5, 4.8)
Napa County 7 Urban 140.9 (129.8, 152.7) 8 (1, 32) 132 stable stable trend 0.8 (-0.6, 5.6)
Marin County 7 Urban 150.6 (142.5, 159.2) 1 (1, 12) 298 stable stable trend 1.0 (-0.6, 5.4)
Santa Clara County 7 Urban 127.7 (124.7, 130.8) 24 (16, 33) 1,378 rising rising trend 1.1 (0.1, 3.7)
Santa Cruz County 7 Urban 147.3 (138.7, 156.2) 2 (1, 17) 246 rising rising trend 1.3 (0.6, 2.7)
Alameda County 7 Urban 126.8 (123.6, 130.0) 26 (16, 34) 1,241 stable stable trend 1.4 (-0.3, 4.3)
Lake County 7 Rural 122.7 (107.9, 139.0) 32 (4, 50) 59 rising rising trend 1.4 (0.3, 5.1)
Contra Costa County 7 Urban 139.4 (135.6, 143.4) 9 (3, 18) 1,033 stable stable trend 2.2 (-0.1, 5.5)
Sonoma County 7 Urban 144.1 (138.2, 150.3) 3 (1, 16) 497 rising rising trend 3.3 (0.1, 7.7)
El Dorado County 7 Urban 141.0 (131.6, 151.0) 7 (1, 26) 195 rising rising trend 3.5 (2.1, 6.0)
Tuolumne County 7 Rural 132.3 (115.3, 151.4) 16 (1, 46) 58 rising rising trend 3.7 (0.2, 11.1)
San Francisco County 7 Urban 130.5 (126.0, 135.2) 17 (12, 32) 652 rising rising trend 5.3 (0.5, 7.8)
Calaveras County 7 Rural 137.7 (118.4, 159.4) 12 (1, 44) 50 rising rising trend 5.5 (0.5, 18.5)
Alpine County 7 Rural
*
*
3 or fewer
*
*
Sierra County 7 Rural
*
*
3 or fewer
*
*

Notes:
Created by statecancerprofiles.cancer.gov on 03/12/2026 4:01 am.

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.

‡ Incidence data come from different sources. The Average Annual Percent Change (AAPC) is based on the APCs calculated by Joinpoint. Due to data availability issues, the time period used in the calculation of the joinpoint regression model may differ for selected counties.

Rates and trends are computed using different standards for malignancy. For more information see malignant.html.

^ All Stages refers to any stage. 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.

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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