State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Maine by County

All Cancer Sites (All Stages^), 2018-2022

All Races (includes Hispanic), Both Sexes, Ages <65

Sorted by Count

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.

Recent Trends - This is an interpretation of the AAPC/APC:

• Rising when 95% confidence interval of AAPC/APC is above 0.
• Stable when 95% confidence interval of AAPC/APC includes 0.
• Falling when 95% confidence interval of AAPC/APC is below 0.

AAPC/APC (95% Confidence Interval) - the change in rate over time

• Average Annual Percent Change - AAPCs are based upon APCs that were calculated by Joinpoint Regression Program
• Annual Percent Change - APCs calculated in SEER*Stat.

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

Maine²

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 239.6 with a 95% confidence interval from 235.8 to 243.3 and 3,682 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is because the trend is -0.3 with a 95% confidence interval from -0.6 to -0.1.

US (SEER+NPCR)¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 223.5 with a 95% confidence interval from 223.3 to 223.8 and 753,674 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is because the trend is -0.2 with a 95% confidence interval from -0.3 to -0.1.

Piscataquis County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 273.2 with a 95% confidence interval from 237.4 to 313.6 and 54 average annual cases over 2018-2022.
• CI*Rank ⋔ : 2 (1, 13)
• Recent Trend : The trend is because the trend is 1.3 with a 95% confidence interval from -4.8 to 7.9.

Franklin County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 221.8 with a 95% confidence interval from 198.0 to 248.1 and 77 average annual cases over 2018-2022.
• CI*Rank ⋔ : 15 (5, 16)
• Recent Trend : The trend is because the trend is -0.1 with a 95% confidence interval from -0.8 to 0.6.

Lincoln County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 204.2 with a 95% confidence interval from 182.6 to 228.0 and 83 average annual cases over 2018-2022.
• CI*Rank ⋔ : 16 (10, 16)
• Recent Trend : The trend is because the trend is -3.2 with a 95% confidence interval from -10.5 to -0.7.

Washington County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 280.1 with a 95% confidence interval from 253.2 to 309.3 and 97 average annual cases over 2018-2022.
• CI*Rank ⋔ : 1 (1, 7)
• Recent Trend : The trend is because the trend is 0.5 with a 95% confidence interval from -0.5 to 1.5.

Sagadahoc County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 232.0 with a 95% confidence interval from 210.2 to 255.6 and 99 average annual cases over 2018-2022.
• CI*Rank ⋔ : 13 (3, 16)
• Recent Trend : The trend is because the trend is 2.0 with a 95% confidence interval from -2.0 to 10.4.

Knox County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 243.2 with a 95% confidence interval from 221.4 to 266.8 and 110 average annual cases over 2018-2022.
• CI*Rank ⋔ : 6 (2, 15)
• Recent Trend : The trend is because the trend is -0.1 with a 95% confidence interval from -0.8 to 0.7.

Waldo County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 247.4 with a 95% confidence interval from 225.4 to 271.1 and 110 average annual cases over 2018-2022.
• CI*Rank ⋔ : 5 (1, 15)
• Recent Trend : The trend is because the trend is -0.4 with a 95% confidence interval from -3.6 to 0.6.

Somerset County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 239.3 with a 95% confidence interval from 220.7 to 259.1 and 147 average annual cases over 2018-2022.
• CI*Rank ⋔ : 8 (3, 15)
• Recent Trend : The trend is because the trend is -0.2 with a 95% confidence interval from -1.7 to 1.3.

Hancock County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 262.3 with a 95% confidence interval from 242.4 to 283.6 and 158 average annual cases over 2018-2022.
• CI*Rank ⋔ : 4 (1, 10)
• Recent Trend : The trend is because the trend is 0.3 with a 95% confidence interval from -0.3 to 0.8.

Oxford County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 238.5 with a 95% confidence interval from 220.9 to 257.2 and 170 average annual cases over 2018-2022.
• CI*Rank ⋔ : 9 (3, 15)
• Recent Trend : The trend is because the trend is 0.1 with a 95% confidence interval from -1.1 to 1.2.

Aroostook County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 242.2 with a 95% confidence interval from 225.4 to 260.1 and 187 average annual cases over 2018-2022.
• CI*Rank ⋔ : 7 (3, 15)
• Recent Trend : The trend is because the trend is -0.2 with a 95% confidence interval from -0.8 to 0.4.

Androscoggin County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 232.7 with a 95% confidence interval from 219.9 to 246.0 and 280 average annual cases over 2018-2022.
• CI*Rank ⋔ : 12 (5, 15)
• Recent Trend : The trend is because the trend is -0.6 with a 95% confidence interval from -1.5 to 0.3.

Kennebec County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 233.0 with a 95% confidence interval from 221.0 to 245.4 and 332 average annual cases over 2018-2022.
• CI*Rank ⋔ : 11 (5, 15)
• Recent Trend : The trend is because the trend is -0.4 with a 95% confidence interval from -0.8 to 0.1.

Penobscot County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 266.2 with a 95% confidence interval from 254.5 to 278.4 and 442 average annual cases over 2018-2022.
• CI*Rank ⋔ : 3 (1, 6)
• Recent Trend : The trend is because the trend is -0.1 with a 95% confidence interval from -0.6 to 0.4.

York County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 237.2 with a 95% confidence interval from 227.9 to 246.7 and 584 average annual cases over 2018-2022.
• CI*Rank ⋔ : 10 (5, 14)
• Recent Trend : The trend is because the trend is -0.4 with a 95% confidence interval from -0.8 to 0.0.

Cumberland County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 228.2 with a 95% confidence interval from 220.5 to 236.1 and 751 average annual cases over 2018-2022.
• CI*Rank ⋔ : 14 (8, 16)
• Recent Trend : The trend is because the trend is 2.4 with a 95% confidence interval from -0.7 to 4.3.

Notes:
Created by statecancerprofiles.cancer.gov on 03/20/2026 11:18 am.

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.

‡ 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.

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 for United States does not include Puerto Rico.