Counties in Maryland by population density
Baltimore city had the highest population density of 24 counties in 2023, at 2,709.1 inhabitants per km². Garrett County had the lowest, at 16.9 inhabitants per km². The median was 127.6 inhabitants per km² and the figure for Maryland was 246.7 inhabitants per km². Source: the U.S. Census Bureau.
All counties, 2023
Full ranking
| Rank | Counties | 2023 | Change on 2022 |
|---|---|---|---|
| 1 | Baltimore city | 2,709.1 | -0.4% |
| 2 | Montgomery County | 833.4 | +0.6% |
| 3 | Prince George's County | 763.9 | +0.3% |
| 4 | Anne Arundel County | 557.9 | +0.2% |
| 5 | Baltimore County | 546.1 | -0.2% |
| 6 | Howard County | 517.5 | +0.1% |
| 7 | Harford County | 233.8 | +0.4% |
| 8 | Frederick County | 171.7 | +2% |
| 9 | Calvert County | 171.6 | +0.1% |
| 10 | Carroll County | 152.4 | +0.6% |
| 11 | Charles County | 145.2 | +1.1% |
| 12 | Washington County | 131.1 | +0.6% |
| 13 | St. Mary's County | 124.1 | +0.3% |
| 14 | Cecil County | 117.9 | +0.8% |
| 15 | Wicomico County | 109.3 | +0.8% |
| 16 | Allegany County | 61.3 | +0.1% |
| 17 | Queen Anne's County | 54.7 | +1.6% |
| 18 | Talbot County | 54.7 | +0.3% |
| 19 | Worcester County | 44.7 | +0.5% |
| 20 | Caroline County | 40.8 | +0.7% |
| 21 | Somerset County | 29.7 | +2% |
| 22 | Kent County | 27.1 | +0.5% |
| 23 | Dorchester County | 23.5 | +1.2% |
| 24 | Garrett County | 16.9 | -0.3% |
Other periods
About this ranking
Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.
United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite
U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Maryland by population density using official data, and cite the source.
rank_places {"indicator":"population_density","level":"province","within":"Maryland","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_density&level=province&within=Maryland&limit=10Questions
Which county has the highest population density?
Baltimore city, with 2,709.1 inhabitants per km² in 2023, according to the U.S. Census Bureau.
Which county has the lowest population density?
Garrett County, with 16.9 inhabitants per km² in 2023.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.
Population density: other rankings
- Countries
- EU countries
- US states
- EU regions (NUTS 2)
- US counties
- Autonomous communities of Spain
- Provinces of Spain
- Municipalities of Spain
- Regions of Germany (NUTS 2)
- Regions of France (NUTS 2)
- Regions of Italy (NUTS 2)
- Regions of Poland (NUTS 2)
Counties in Maryland: more rankings
- Asian population share
- Bachelor's degree or higher, population 25 and over
- Live births, July to June
- Black or African American population share
- Crude birth rate, July to June
- Crude death rate, July to June
- Deaths, July to June
- Foreign-born population share
- Real GDP growth
- GDP per capita, US dollars
- Gross domestic product (GDP), US dollars
- Hispanic or Latino population share
- Homeownership rate (US, housing units)
- Median age
- Median gross rent (monthly)
- Median home value