State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Maryland by County

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

All Races (includes Hispanic), Female, All Ages

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

Maryland²

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 426.0 with a 95% confidence interval from 423.1 to 429.0 and 16,981 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is because the trend is 0.1 with a 95% confidence interval from -0.1 to 0.3.

US (SEER+NPCR)¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 424.8 with a 95% confidence interval from 424.4 to 425.2 and 891,437 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is because the trend is -0.6 with a 95% confidence interval from -1.1 to -0.1.

Kent County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 397.7 with a 95% confidence interval from 349.3 to 451.7 and 66 average annual cases over 2018-2022.
• CI*Rank ⋔ : 21 (5, 24)
• Recent Trend : The trend is because the trend is -2.9 with a 95% confidence interval from -9.5 to -0.3.

Somerset County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 472.3 with a 95% confidence interval from 421.1 to 528.4 and 72 average annual cases over 2018-2022.
• CI*Rank ⋔ : 3 (1, 20)
• Recent Trend : The trend is because the trend is 0.6 with a 95% confidence interval from -0.7 to 2.0.

Garrett County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 357.3 with a 95% confidence interval from 321.0 to 397.0 and 82 average annual cases over 2018-2022.
• CI*Rank ⋔ : 24 (20, 24)
• Recent Trend : The trend is because the trend is -5.6 with a 95% confidence interval from -12.7 to -0.4.

Caroline County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 489.0 with a 95% confidence interval from 447.3 to 533.7 and 109 average annual cases over 2018-2022.
• CI*Rank ⋔ : 2 (1, 17)
• Recent Trend : The trend is because the trend is 3.3 with a 95% confidence interval from 0.9 to 8.0.

Dorchester County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 471.5 with a 95% confidence interval from 432.0 to 514.0 and 122 average annual cases over 2018-2022.
• CI*Rank ⋔ : 4 (1, 19)
• Recent Trend : The trend is because the trend is 1.0 with a 95% confidence interval from 0.4 to 1.5.

Talbot County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 455.4 with a 95% confidence interval from 419.7 to 493.7 and 161 average annual cases over 2018-2022.
• CI*Rank ⋔ : 9 (1, 20)
• Recent Trend : The trend is because the trend is 0.3 with a 95% confidence interval from -0.7 to 1.2.

Queen Annes County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 462.4 with a 95% confidence interval from 429.6 to 497.2 and 164 average annual cases over 2018-2022.
• CI*Rank ⋔ : 7 (1, 19)
• Recent Trend : The trend is because the trend is 0.6 with a 95% confidence interval from -0.5 to 1.7.

Worcester County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 463.9 with a 95% confidence interval from 432.6 to 497.1 and 216 average annual cases over 2018-2022.
• CI*Rank ⋔ : 5 (1, 19)
• Recent Trend : The trend is because the trend is -5.8 with a 95% confidence interval from -11.7 to 0.3.

Allegany County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 494.9 with a 95% confidence interval from 465.1 to 526.3 and 243 average annual cases over 2018-2022.
• CI*Rank ⋔ : 1 (1, 11)
• Recent Trend : The trend is because the trend is 0.8 with a 95% confidence interval from -0.1 to 1.7.

Calvert County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 450.0 with a 95% confidence interval from 425.4 to 475.8 and 268 average annual cases over 2018-2022.
• CI*Rank ⋔ : 14 (2, 19)
• Recent Trend : The trend is because the trend is 0.1 with a 95% confidence interval from -0.6 to 0.7.

Wicomico County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 433.3 with a 95% confidence interval from 410.1 to 457.5 and 283 average annual cases over 2018-2022.
• CI*Rank ⋔ : 18 (6, 20)
• Recent Trend : The trend is because the trend is -4.9 with a 95% confidence interval from -12.5 to -0.2.

St. Marys County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 453.2 with a 95% confidence interval from 429.6 to 477.8 and 289 average annual cases over 2018-2022.
• CI*Rank ⋔ : 12 (2, 19)
• Recent Trend : The trend is because the trend is 0.7 with a 95% confidence interval from 0.2 to 1.3.

Cecil County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 454.1 with a 95% confidence interval from 430.5 to 478.7 and 300 average annual cases over 2018-2022.
• CI*Rank ⋔ : 11 (2, 19)
• Recent Trend : The trend is because the trend is -5.0 with a 95% confidence interval from -10.3 to 0.6.

Charles County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 416.9 with a 95% confidence interval from 398.8 to 435.7 and 419 average annual cases over 2018-2022.
• CI*Rank ⋔ : 19 (15, 21)
• Recent Trend : The trend is because the trend is 0.3 with a 95% confidence interval from -0.2 to 0.9.

Washington County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 448.5 with a 95% confidence interval from 429.6 to 468.1 and 459 average annual cases over 2018-2022.
• CI*Rank ⋔ : 15 (3, 19)
• Recent Trend : The trend is because the trend is 0.2 with a 95% confidence interval from -0.2 to 0.7.

Carroll County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 461.0 with a 95% confidence interval from 442.9 to 479.6 and 537 average annual cases over 2018-2022.
• CI*Rank ⋔ : 8 (2, 17)
• Recent Trend : The trend is because the trend is 0.3 with a 95% confidence interval from 0.0 to 0.7.

Frederick County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 440.9 with a 95% confidence interval from 426.4 to 455.7 and 736 average annual cases over 2018-2022.
• CI*Rank ⋔ : 16 (6, 19)
• Recent Trend : The trend is because the trend is -0.4 with a 95% confidence interval from -1.2 to 0.5.

Howard County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 398.4 with a 95% confidence interval from 385.9 to 411.3 and 789 average annual cases over 2018-2022.
• CI*Rank ⋔ : 20 (19, 23)
• Recent Trend : The trend is because the trend is -0.5 with a 95% confidence interval from -0.9 to -0.1.

Harford County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 463.6 with a 95% confidence interval from 448.9 to 478.7 and 805 average annual cases over 2018-2022.
• CI*Rank ⋔ : 6 (2, 16)
• Recent Trend : The trend is because the trend is -1.9 with a 95% confidence interval from -3.6 to 0.5.

Baltimore City²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 440.2 with a 95% confidence interval from 430.4 to 450.2 and 1,629 average annual cases over 2018-2022.
• CI*Rank ⋔ : 17 (9, 19)
• Recent Trend : The trend is because the trend is 0.1 with a 95% confidence interval from -0.3 to 0.5.

Anne Arundel County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 454.4 with a 95% confidence interval from 444.4 to 464.6 and 1,655 average annual cases over 2018-2022.
• CI*Rank ⋔ : 10 (4, 16)
• Recent Trend : The trend is because the trend is 0.2 with a 95% confidence interval from -0.2 to 0.7.

Prince Georges County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 373.3 with a 95% confidence interval from 366.2 to 380.5 and 2,218 average annual cases over 2018-2022.
• CI*Rank ⋔ : 23 (22, 24)
• Recent Trend : The trend is because the trend is 0.0 with a 95% confidence interval from -0.4 to 0.3.

Baltimore County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 451.4 with a 95% confidence interval from 443.4 to 459.5 and 2,653 average annual cases over 2018-2022.
• CI*Rank ⋔ : 13 (5, 17)
• Recent Trend : The trend is because the trend is 0.3 with a 95% confidence interval from -0.1 to 1.6.

Montgomery County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 392.1 with a 95% confidence interval from 385.3 to 399.0 and 2,679 average annual cases over 2018-2022.
• CI*Rank ⋔ : 22 (20, 23)
• Recent Trend : The trend is because the trend is 1.0 with a 95% confidence interval from -0.3 to 3.2.

Notes:
Created by statecancerprofiles.cancer.gov on 03/20/2026 1:28 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 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.

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.

Source: SEER and NPCR data. For more specific information please see the table.

Data for United States does not include Puerto Rico.