Ranking of Maryland Counties By Population in 2017
Updated on June 21, 2025.
Based on the US Census Vintage data estimates, in 2017, the Population for Maryland was 6.03M. Among all Maryland counties, Montgomery County had the highest population (1.05M), followed by Prince George's County (910.95K), and Baltimore County (828.96K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Maryland counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Maryland Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2017 Census.
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Ranking of Maryland Counties By Population in 2017
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| Rank | County | Population |
|---|---|---|
| 1 | Montgomery County | 1047239 |
| 2 | Prince George's County | 910946 |
| 3 | Baltimore County | 828956 |
| 4 | Baltimore city | 610853 |
| 5 | Anne Arundel County | 571359 |
| 6 | Howard County | 319409 |
| 7 | Harford County | 251948 |
| 8 | Frederick County | 251037 |
| 9 | Carroll County | 167687 |
| 10 | Charles County | 159718 |
| 11 | Washington County | 150247 |
| 12 | St. Mary's County | 112627 |
| 13 | Cecil County | 102509 |
| 14 | Wicomico County | 102471 |
| 15 | Calvert County | 91492 |
| 16 | Allegany County | 71363 |
| 17 | Worcester County | 51721 |
| 18 | Queen Anne's County | 49648 |
| 19 | Talbot County | 37057 |
| 20 | Caroline County | 33122 |
| 21 | Dorchester County | 32093 |
| 22 | Garrett County | 29276 |
| 23 | Somerset County | 25922 |
| 24 | Kent County | 19486 |
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