Interpretation of Demographics Data
Demographic Data Report for Maryland by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
Maryland
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 22.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,376,500.
- Rank within US : This county is ranked 20 of 52
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 22.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 73,517,834.
- Rank within US : N/A
Caroline County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 8,056.
- Rank within US : This county is ranked 717 of 3143
Charles County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 40,722.
- Rank within US : This county is ranked 717 of 3143
St. Marys County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 27,549.
- Rank within US : This county is ranked 717 of 3143
Howard County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 79,917.
- Rank within US : This county is ranked 748 of 3143
Frederick County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 66,996.
- Rank within US : This county is ranked 926 of 3143
Calvert County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 21,796.
- Rank within US : This county is ranked 1006 of 3143
Montgomery County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 243,139.
- Rank within US : This county is ranked 1133 of 3143
Wicomico County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 23,644.
- Rank within US : This county is ranked 1260 of 3143
Anne Arundel County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 133,881.
- Rank within US : This county is ranked 1311 of 3143
Harford County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 58,777.
- Rank within US : This county is ranked 1356 of 3143
Cecil County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 23,336.
- Rank within US : This county is ranked 1395 of 3143
Prince Georges County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 212,127.
- Rank within US : This county is ranked 1441 of 3143
Carroll County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 38,635.
- Rank within US : This county is ranked 1478 of 3143
Baltimore County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 185,984.
- Rank within US : This county is ranked 1525 of 3143
Washington County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 33,870.
- Rank within US : This county is ranked 1576 of 3143
Queen Annes County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 10,926.
- Rank within US : This county is ranked 1869 of 3143
Dorchester County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 6,865.
- Rank within US : This county is ranked 1910 of 3143
Baltimore City
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 119,618.
- Rank within US : This county is ranked 1936 of 3143
Talbot County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,045.
- Rank within US : This county is ranked 2620 of 3143
Allegany County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 17.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 12,032.
- Rank within US : This county is ranked 2756 of 3143
Garrett County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 17.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 5,075.
- Rank within US : This county is ranked 2775 of 3143
Somerset County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 17.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 4,336.
- Rank within US : This county is ranked 2810 of 3143
Worcester County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 17.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 9,185.
- Rank within US : This county is ranked 2875 of 3143
Kent County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 15.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,989.
- Rank within US : This county is ranked 3011 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/28/2026 2:31 pm.
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: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age under 18, see the dictionary.
Data for United States does not include Puerto Rico.