State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Maryland by County

Lung & Bronchus (All Stages^), 2017-2021

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

Sorted by Rate

Explanation of Column Headers

Objective - The objective of *** is from the Healthy People 2020 project done by the Centers for Disease Control and Prevention.

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

Maryland⁶

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 50.0 with a 95% confidence interval from 49.2 to 50.7 and 3,830 average annual cases over 2017-2021.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is falling because the trend is -4.0 with a 95% confidence interval from -6.3 to -2.0.

US (SEER+NPCR)¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 53.1 with a 95% confidence interval from 53.0 to 53.2 and 216,523 average annual cases over 2017-2021.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is falling because the trend is -3.5 with a 95% confidence interval from -4.2 to -2.9.

Somerset County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 78.4 with a 95% confidence interval from 65.3 to 93.7 and 26 average annual cases over 2017-2021.
• CI*Rank ⋔ : 1 (1, 10)
• Recent Trend : The trend is stable because the trend is -1.7 with a 95% confidence interval from -3.7 to 0.2.

Baltimore City⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 73.8 with a 95% confidence interval from 70.9 to 76.8 and 509 average annual cases over 2017-2021.
• CI*Rank ⋔ : 2 (1, 5)
• Recent Trend : The trend is falling because the trend is -6.5 with a 95% confidence interval from -10.4 to -3.4.

Wicomico County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 72.8 with a 95% confidence interval from 66.1 to 79.9 and 92 average annual cases over 2017-2021.
• CI*Rank ⋔ : 3 (1, 7)
• Recent Trend : The trend is falling because the trend is -1.7 with a 95% confidence interval from -2.7 to -0.6.

Cecil County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 70.6 with a 95% confidence interval from 64.2 to 77.5 and 95 average annual cases over 2017-2021.
• CI*Rank ⋔ : 4 (1, 9)
• Recent Trend : The trend is stable because the trend is -1.8 with a 95% confidence interval from -13.5 to 1.3.

Allegany County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 66.9 with a 95% confidence interval from 60.1 to 74.4 and 72 average annual cases over 2017-2021.
• CI*Rank ⋔ : 5 (1, 13)
• Recent Trend : The trend is stable because the trend is -0.9 with a 95% confidence interval from -2.2 to 0.4.

Caroline County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 64.1 with a 95% confidence interval from 53.8 to 75.8 and 29 average annual cases over 2017-2021.
• CI*Rank ⋔ : 6 (1, 18)
• Recent Trend : The trend is falling because the trend is -2.3 with a 95% confidence interval from -4.3 to -0.3.

Dorchester County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 61.2 with a 95% confidence interval from 51.9 to 72.0 and 32 average annual cases over 2017-2021.
• CI*Rank ⋔ : 7 (2, 19)
• Recent Trend : The trend is falling because the trend is -2.8 with a 95% confidence interval from -5.2 to -0.6.

St. Marys County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 61.0 with a 95% confidence interval from 54.9 to 67.6 and 77 average annual cases over 2017-2021.
• CI*Rank ⋔ : 8 (4, 16)
• Recent Trend : The trend is stable because the trend is -1.0 with a 95% confidence interval from -2.0 to 0.0.

Washington County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 60.9 with a 95% confidence interval from 56.2 to 65.9 and 128 average annual cases over 2017-2021.
• CI*Rank ⋔ : 9 (5, 15)
• Recent Trend : The trend is falling because the trend is -7.3 with a 95% confidence interval from -14.4 to -0.9.

Calvert County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 60.5 with a 95% confidence interval from 54.1 to 67.5 and 68 average annual cases over 2017-2021.
• CI*Rank ⋔ : 10 (4, 17)
• Recent Trend : The trend is stable because the trend is -1.6 with a 95% confidence interval from -3.2 to 0.1.

Baltimore County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 60.5 with a 95% confidence interval from 58.4 to 62.6 and 690 average annual cases over 2017-2021.
• CI*Rank ⋔ : 11 (6, 14)
• Recent Trend : The trend is falling because the trend is -1.4 with a 95% confidence interval from -1.9 to -1.0.

Harford County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 59.8 with a 95% confidence interval from 56.1 to 63.7 and 201 average annual cases over 2017-2021.
• CI*Rank ⋔ : 12 (6, 15)
• Recent Trend : The trend is falling because the trend is -1.4 with a 95% confidence interval from -2.3 to -0.5.

Kent County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 59.7 with a 95% confidence interval from 48.5 to 73.4 and 21 average annual cases over 2017-2021.
• CI*Rank ⋔ : 13 (1, 20)
• Recent Trend : The trend is falling because the trend is -2.2 with a 95% confidence interval from -4.2 to -0.3.

Worcester County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 56.2 with a 95% confidence interval from 49.7 to 63.6 and 59 average annual cases over 2017-2021.
• CI*Rank ⋔ : 14 (6, 19)
• Recent Trend : The trend is falling because the trend is -1.8 with a 95% confidence interval from -3.4 to -0.1.

Carroll County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 53.8 with a 95% confidence interval from 49.6 to 58.2 and 127 average annual cases over 2017-2021.
• CI*Rank ⋔ : 15 (10, 19)
• Recent Trend : The trend is falling because the trend is -1.7 with a 95% confidence interval from -2.6 to -0.8.

Anne Arundel County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 53.6 with a 95% confidence interval from 51.2 to 56.1 and 379 average annual cases over 2017-2021.
• CI*Rank ⋔ : 16 (12, 19)
• Recent Trend : The trend is falling because the trend is -3.0 with a 95% confidence interval from -5.9 to -2.3.

Charles County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 51.0 with a 95% confidence interval from 46.3 to 56.1 and 91 average annual cases over 2017-2021.
• CI*Rank ⋔ : 17 (12, 20)
• Recent Trend : The trend is falling because the trend is -2.1 with a 95% confidence interval from -3.9 to -0.2.

Talbot County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 49.8 with a 95% confidence interval from 42.5 to 58.4 and 37 average annual cases over 2017-2021.
• CI*Rank ⋔ : 18 (10, 21)
• Recent Trend : The trend is falling because the trend is -2.6 with a 95% confidence interval from -4.3 to -0.9.

Queen Annes County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 48.7 with a 95% confidence interval from 41.6 to 56.7 and 36 average annual cases over 2017-2021.
• CI*Rank ⋔ : 19 (11, 21)
• Recent Trend : The trend is falling because the trend is -2.9 with a 95% confidence interval from -4.9 to -1.0.

Frederick County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 45.8 with a 95% confidence interval from 42.5 to 49.4 and 146 average annual cases over 2017-2021.
• CI*Rank ⋔ : 20 (17, 21)
• Recent Trend : The trend is stable because the trend is 0.0 with a 95% confidence interval from -3.3 to 6.3.

Garrett County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 37.3 with a 95% confidence interval from 30.1 to 46.1 and 19 average annual cases over 2017-2021.
• CI*Rank ⋔ : 21 (19, 24)
• Recent Trend : The trend is falling because the trend is -2.7 with a 95% confidence interval from -4.9 to -0.5.

Prince Georges County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 36.4 with a 95% confidence interval from 34.7 to 38.1 and 382 average annual cases over 2017-2021.
• CI*Rank ⋔ : 22 (21, 23)
• Recent Trend : The trend is falling because the trend is -2.7 with a 95% confidence interval from -3.4 to -2.0.

Howard County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 33.0 with a 95% confidence interval from 30.4 to 35.8 and 121 average annual cases over 2017-2021.
• CI*Rank ⋔ : 23 (21, 24)
• Recent Trend : The trend is falling because the trend is -3.6 with a 95% confidence interval from -5.0 to -2.1.

Montgomery County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 29.4 with a 95% confidence interval from 28.0 to 30.7 and 384 average annual cases over 2017-2021.
• CI*Rank ⋔ : 24 (23, 24)
• Recent Trend : The trend is falling because the trend is -2.7 with a 95% confidence interval from -3.2 to -2.1.

Notes:
Created by statecancerprofiles.cancer.gov on 07/15/2025 3:58 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 (19 age groups: <1, 1-4, 5-9, ... , 80-84, 85+). 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 in the Surveillance, Epidemiology, and End Results (SEER) Summary/Historic Combined Summary Stage (2004+).
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: SEER and NPCR data. For more specific information please see the table.

Data for the United States does not include data from Indiana.
Data for the United States does not include Puerto Rico.