Maryland Counties by Population (2026)
by Kristen Carney
Updated: February 9, 2026
The most populous counties in Maryland are Montgomery County with 1,065,949, Prince George's County at 959,754, Baltimore County with 850,796, Anne Arundel County at 598,166, and Baltimore city/county with 573,243. You can get the most current Census population data for all 24 Maryland counties, sorted from the most populous counties in Maryland to the least, according to the 2024 American Community Survey.
Sure, you can copy this list right into your favorite spreadsheet tool. Or save yourself formatting headaches and grab the latest Maryland counties population data as a ready-to-use Excel™ file below. It's time to stop searching and start digging into data!
| Rank | County | Population |
|---|---|---|
| 1 | Montgomery County | 1,065,949 |
| 2 | Prince George's County | 959,754 |
| 3 | Baltimore County | 850,796 |
| 4 | Anne Arundel County | 598,166 |
| 5 | Baltimore city/county | 573,243 |
| 6 | Howard County | 336,328 |
| 7 | Frederick County | 287,048 |
| 8 | Harford County | 263,757 |
| 9 | Carroll County | 175,321 |
| 10 | Charles County | 170,527 |
| 11 | Washington County | 155,709 |
| 12 | St. Mary's County | 115,126 |
| 13 | Cecil County | 104,960 |
| 14 | Wicomico County | 104,914 |
| 15 | Calvert County | 94,313 |
| 16 | Allegany County | 67,452 |
| 17 | Worcester County | 53,700 |
| 18 | Queen Anne's County | 51,825 |
| 19 | Talbot County | 37,917 |
| 20 | Caroline County | 33,669 |
| 21 | Dorchester County | 32,754 |
| 22 | Garrett County | 28,615 |
| 23 | Somerset County | 24,822 |
| 24 | Kent County | 19,346 |
|
United States Census Bureau. B01001 SEX BY AGE, 2024 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. January 29, 2026. http://www.census.gov/. |
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