State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Pennsylvania by County

Breast (Late Stage^), 2018-2022

All Races (includes Hispanic), Female, All Ages

Sorted by Rate

Explanation of Column Headers
Incidence Rate (95% Confidence Interval) - The incidence rate is based upon 100,000 people and is an annual rate (or average annual rate) based on the time period indicated. Rates are age-adjusted by 5-year age groups to the 2000 U.S. standard million population.

Percent of Cases with Late Stage - This is the number of late stages cases compared to the number of cases for all stages.

Other Notes

• Larger confidence intervals indicate less stability of the data. This is often due to low counts that are not quite low enough to be suppressed.
• Data is currently being suppressed if there are fewer than 16 counts for the time period.

Line by Line Interpretation of the Report

Pennsylvania²

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 41.7 with a 95% confidence interval from 41.1 to 42.4 and 3,457 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A

US (SEER+NPCR)¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 42.4 with a 95% confidence interval from 42.3 to 42.5 and 83,714 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A

Union County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 27.2 with a 95% confidence interval from 18.5 to 38.8 and 7 average annual cases over 2018-2022.
• CI*Rank ⋔ : 63 (17, 63)
• Percent of Cases with Late Stage :

Perry County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 27.3 with a 95% confidence interval from 19.5 to 37.5 and 9 average annual cases over 2018-2022.
• CI*Rank ⋔ : 62 (29, 63)
• Percent of Cases with Late Stage :

Butler County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 30.7 with a 95% confidence interval from 26.2 to 35.7 and 38 average annual cases over 2018-2022.
• CI*Rank ⋔ : 61 (40, 63)
• Percent of Cases with Late Stage :

Bedford County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 31.1 with a 95% confidence interval from 22.9 to 41.5 and 11 average annual cases over 2018-2022.
• CI*Rank ⋔ : 60 (10, 63)
• Percent of Cases with Late Stage :

Snyder County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 31.7 with a 95% confidence interval from 22.5 to 43.6 and 9 average annual cases over 2018-2022.
• CI*Rank ⋔ : 59 (5, 63)
• Percent of Cases with Late Stage :

Greene County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 32.1 with a 95% confidence interval from 22.7 to 44.7 and 8 average annual cases over 2018-2022.
• CI*Rank ⋔ : 58 (5, 63)
• Percent of Cases with Late Stage :

Columbia County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 33.6 with a 95% confidence interval from 25.5 to 43.5 and 14 average annual cases over 2018-2022.
• CI*Rank ⋔ : 57 (5, 63)
• Percent of Cases with Late Stage :

Franklin County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 34.3 with a 95% confidence interval from 29.3 to 40.1 and 36 average annual cases over 2018-2022.
• CI*Rank ⋔ : 56 (21, 62)
• Percent of Cases with Late Stage :

Lycoming County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 34.8 with a 95% confidence interval from 28.6 to 42.0 and 25 average annual cases over 2018-2022.
• CI*Rank ⋔ : 55 (13, 63)
• Percent of Cases with Late Stage :

Carbon County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 35.0 with a 95% confidence interval from 27.4 to 44.2 and 17 average annual cases over 2018-2022.
• CI*Rank ⋔ : 54 (6, 63)
• Percent of Cases with Late Stage :

Westmoreland County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 35.4 with a 95% confidence interval from 31.8 to 39.2 and 88 average annual cases over 2018-2022.
• CI*Rank ⋔ : 53 (29, 61)
• Percent of Cases with Late Stage :

Juniata County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 35.5 with a 95% confidence interval from 22.4 to 53.6 and 5 average annual cases over 2018-2022.
• CI*Rank ⋔ : 52 (1, 63)
• Percent of Cases with Late Stage :

Susquehanna County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 35.6 with a 95% confidence interval from 25.8 to 48.5 and 11 average annual cases over 2018-2022.
• CI*Rank ⋔ : 51 (1, 63)
• Percent of Cases with Late Stage :

Adams County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 36.4 with a 95% confidence interval from 30.0 to 43.9 and 27 average annual cases over 2018-2022.
• CI*Rank ⋔ : 50 (7, 62)
• Percent of Cases with Late Stage :

Northumberland County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 36.5 with a 95% confidence interval from 29.3 to 44.9 and 22 average annual cases over 2018-2022.
• CI*Rank ⋔ : 49 (4, 63)
• Percent of Cases with Late Stage :

Lebanon County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 36.8 with a 95% confidence interval from 31.2 to 43.1 and 35 average annual cases over 2018-2022.
• CI*Rank ⋔ : 48 (11, 61)
• Percent of Cases with Late Stage :

Clarion County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 36.8 with a 95% confidence interval from 25.7 to 51.3 and 9 average annual cases over 2018-2022.
• CI*Rank ⋔ : 47 (1, 63)
• Percent of Cases with Late Stage :

Cumberland County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 37.4 with a 95% confidence interval from 33.0 to 42.1 and 60 average annual cases over 2018-2022.
• CI*Rank ⋔ : 46 (16, 59)
• Percent of Cases with Late Stage :

Huntingdon County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 37.6 with a 95% confidence interval from 27.3 to 50.8 and 10 average annual cases over 2018-2022.
• CI*Rank ⋔ : 45 (1, 63)
• Percent of Cases with Late Stage :

Potter County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 37.6 with a 95% confidence interval from 22.7 to 59.7 and 5 average annual cases over 2018-2022.
• CI*Rank ⋔ : 44 (1, 63)
• Percent of Cases with Late Stage :

Blair County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 38.0 with a 95% confidence interval from 31.9 to 45.0 and 32 average annual cases over 2018-2022.
• CI*Rank ⋔ : 43 (5, 61)
• Percent of Cases with Late Stage :

Crawford County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 38.1 with a 95% confidence interval from 31.2 to 46.3 and 24 average annual cases over 2018-2022.
• CI*Rank ⋔ : 42 (4, 62)
• Percent of Cases with Late Stage :

Centre County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 38.4 with a 95% confidence interval from 32.0 to 45.6 and 29 average annual cases over 2018-2022.
• CI*Rank ⋔ : 41 (5, 61)
• Percent of Cases with Late Stage :

Monroe County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 38.9 with a 95% confidence interval from 33.7 to 44.8 and 45 average annual cases over 2018-2022.
• CI*Rank ⋔ : 40 (5, 58)
• Percent of Cases with Late Stage :

McKean County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 39.2 with a 95% confidence interval from 27.1 to 54.6 and 8 average annual cases over 2018-2022.
• CI*Rank ⋔ : 39 (1, 63)
• Percent of Cases with Late Stage :

Berks County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 39.5 with a 95% confidence interval from 36.1 to 43.3 and 106 average annual cases over 2018-2022.
• CI*Rank ⋔ : 38 (12, 54)
• Percent of Cases with Late Stage :

Dauphin County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 40.0 with a 95% confidence interval from 35.8 to 44.5 and 73 average annual cases over 2018-2022.
• CI*Rank ⋔ : 37 (8, 55)
• Percent of Cases with Late Stage :

Lancaster County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 40.1 with a 95% confidence interval from 36.9 to 43.4 and 134 average annual cases over 2018-2022.
• CI*Rank ⋔ : 36 (12, 51)
• Percent of Cases with Late Stage :

Warren County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 40.5 with a 95% confidence interval from 30.6 to 53.0 and 13 average annual cases over 2018-2022.
• CI*Rank ⋔ : 35 (1, 62)
• Percent of Cases with Late Stage :

Bradford County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 40.5 with a 95% confidence interval from 31.7 to 51.2 and 17 average annual cases over 2018-2022.
• CI*Rank ⋔ : 34 (1, 62)
• Percent of Cases with Late Stage :

Venango County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 40.6 with a 95% confidence interval from 31.3 to 52.0 and 16 average annual cases over 2018-2022.
• CI*Rank ⋔ : 33 (1, 62)
• Percent of Cases with Late Stage :

Cambria County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 41.2 with a 95% confidence interval from 35.0 to 48.1 and 39 average annual cases over 2018-2022.
• CI*Rank ⋔ : 32 (2, 58)
• Percent of Cases with Late Stage :

Somerset County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 41.6 with a 95% confidence interval from 32.9 to 51.9 and 20 average annual cases over 2018-2022.
• CI*Rank ⋔ : 31 (1, 61)
• Percent of Cases with Late Stage :

Luzerne County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.1 with a 95% confidence interval from 38.0 to 46.5 and 91 average annual cases over 2018-2022.
• CI*Rank ⋔ : 30 (4, 49)
• Percent of Cases with Late Stage :

Clinton County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 42.1 with a 95% confidence interval from 30.6 to 56.8 and 10 average annual cases over 2018-2022.
• CI*Rank ⋔ : 29 (1, 62)
• Percent of Cases with Late Stage :

Allegheny County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.2 with a 95% confidence interval from 40.0 to 44.3 and 345 average annual cases over 2018-2022.
• CI*Rank ⋔ : 28 (10, 41)
• Percent of Cases with Late Stage :

Wyoming County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.2 with a 95% confidence interval from 29.2 to 59.7 and 8 average annual cases over 2018-2022.
• CI*Rank ⋔ : 27 (1, 63)
• Percent of Cases with Late Stage :

Armstrong County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.2 with a 95% confidence interval from 33.6 to 52.7 and 19 average annual cases over 2018-2022.
• CI*Rank ⋔ : 26 (1, 61)
• Percent of Cases with Late Stage :

Pike County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 42.3 with a 95% confidence interval from 32.7 to 53.9 and 17 average annual cases over 2018-2022.
• CI*Rank ⋔ : 25 (1, 62)
• Percent of Cases with Late Stage :

Tioga County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 42.3 with a 95% confidence interval from 31.4 to 55.9 and 12 average annual cases over 2018-2022.
• CI*Rank ⋔ : 24 (1, 62)
• Percent of Cases with Late Stage :

Washington County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.3 with a 95% confidence interval from 37.3 to 47.9 and 60 average annual cases over 2018-2022.
• CI*Rank ⋔ : 23 (3, 52)
• Percent of Cases with Late Stage :

Philadelphia County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.7 with a 95% confidence interval from 40.8 to 44.7 and 388 average annual cases over 2018-2022.
• CI*Rank ⋔ : 22 (10, 38)
• Percent of Cases with Late Stage :

Fayette County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.7 with a 95% confidence interval from 36.4 to 49.9 and 38 average annual cases over 2018-2022.
• CI*Rank ⋔ : 21 (1, 56)
• Percent of Cases with Late Stage :

Delaware County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 42.8 with a 95% confidence interval from 39.6 to 46.1 and 149 average annual cases over 2018-2022.
• CI*Rank ⋔ : 20 (5, 44)
• Percent of Cases with Late Stage :

Indiana County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 43.2 with a 95% confidence interval from 35.0 to 53.0 and 23 average annual cases over 2018-2022.
• CI*Rank ⋔ : 19 (1, 59)
• Percent of Cases with Late Stage :

Montour County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 43.3 with a 95% confidence interval from 27.8 to 65.2 and 6 average annual cases over 2018-2022.
• CI*Rank ⋔ : 18 (1, 63)
• Percent of Cases with Late Stage :

Erie County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 43.4 with a 95% confidence interval from 38.7 to 48.5 and 72 average annual cases over 2018-2022.
• CI*Rank ⋔ : 17 (2, 48)
• Percent of Cases with Late Stage :

Jefferson County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 43.6 with a 95% confidence interval from 33.2 to 56.6 and 13 average annual cases over 2018-2022.
• CI*Rank ⋔ : 16 (1, 62)
• Percent of Cases with Late Stage :

Lehigh County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 43.8 with a 95% confidence interval from 39.9 to 48.0 and 100 average annual cases over 2018-2022.
• CI*Rank ⋔ : 15 (3, 44)
• Percent of Cases with Late Stage :

Bucks County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 43.8 with a 95% confidence interval from 40.9 to 46.9 and 187 average annual cases over 2018-2022.
• CI*Rank ⋔ : 14 (4, 39)
• Percent of Cases with Late Stage :

Lackawanna County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 44.2 with a 95% confidence interval from 39.1 to 49.9 and 61 average annual cases over 2018-2022.
• CI*Rank ⋔ : 13 (1, 48)
• Percent of Cases with Late Stage :

Clearfield County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 44.4 with a 95% confidence interval from 35.9 to 54.4 and 22 average annual cases over 2018-2022.
• CI*Rank ⋔ : 12 (1, 57)
• Percent of Cases with Late Stage :

Montgomery County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 44.7 with a 95% confidence interval from 42.1 to 47.4 and 244 average annual cases over 2018-2022.
• CI*Rank ⋔ : 11 (3, 35)
• Percent of Cases with Late Stage :

Wayne County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 44.7 with a 95% confidence interval from 33.6 to 58.4 and 14 average annual cases over 2018-2022.
• CI*Rank ⋔ : 10 (1, 61)
• Percent of Cases with Late Stage :

York County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 45.3 with a 95% confidence interval from 41.7 to 49.1 and 129 average annual cases over 2018-2022.
• CI*Rank ⋔ : 9 (2, 37)
• Percent of Cases with Late Stage :

Mercer County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 45.6 with a 95% confidence interval from 38.4 to 53.8 and 35 average annual cases over 2018-2022.
• CI*Rank ⋔ : 8 (1, 51)
• Percent of Cases with Late Stage :

Chester County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 45.6 with a 95% confidence interval from 42.2 to 49.2 and 147 average annual cases over 2018-2022.
• CI*Rank ⋔ : 7 (2, 35)
• Percent of Cases with Late Stage :

Mifflin County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 45.9 with a 95% confidence interval from 35.3 to 58.9 and 15 average annual cases over 2018-2022.
• CI*Rank ⋔ : 6 (1, 60)
• Percent of Cases with Late Stage :

Northampton County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 46.6 with a 95% confidence interval from 42.2 to 51.3 and 94 average annual cases over 2018-2022.
• CI*Rank ⋔ : 5 (1, 37)
• Percent of Cases with Late Stage :

Elk County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 47.3 with a 95% confidence interval from 34.5 to 64.0 and 11 average annual cases over 2018-2022.
• CI*Rank ⋔ : 4 (1, 61)
• Percent of Cases with Late Stage :

Beaver County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 48.0 with a 95% confidence interval from 42.0 to 54.7 and 55 average annual cases over 2018-2022.
• CI*Rank ⋔ : 3 (1, 40)
• Percent of Cases with Late Stage :

Schuylkill County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 48.7 with a 95% confidence interval from 42.4 to 55.7 and 49 average annual cases over 2018-2022.
• CI*Rank ⋔ : 2 (1, 37)
• Percent of Cases with Late Stage :

Lawrence County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 49.2 with a 95% confidence interval from 40.9 to 58.8 and 30 average annual cases over 2018-2022.
• CI*Rank ⋔ : 1 (1, 46)
• Percent of Cases with Late Stage :

Cameron County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate :
• CI*Rank ⋔ : *
• Percent of Cases with Late Stage : *

Forest County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate :
• CI*Rank ⋔ : *
• Percent of Cases with Late Stage : *

Fulton County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate :
• CI*Rank ⋔ : *
• Percent of Cases with Late Stage : *

Sullivan County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate :
• CI*Rank ⋔ : *
• Percent of Cases with Late Stage : *

Notes:
Created by statecancerprofiles.cancer.gov on 03/13/2026 3:43 pm.

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



† 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.

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).

* 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.