Ranking of Maryland Counties By Population in 2023

Updated on June 21, 2025.

Based on the US Census Vintage data estimates, in 2023, the Population for Maryland was 6.22M. Among all Maryland counties, Montgomery County had the highest population (1.07M), followed by Prince George's County (956.53K), and Baltimore County (848.68K).

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.

See this for other years:
Ranking of Maryland Counties By Population in 2023
Montgomery
Prince George's
Baltimore
Anne Arundel
Baltimore city
Howard
Frederick
Harford
Carroll
Charles
Ranking of Maryland Counties By Population in 2023
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Rank County Population
1 Montgomery County 1069397
2 Prince George's County 956533
3 Baltimore County 848676
4 Anne Arundel County 599965
5 Baltimore city 567517
6 Howard County 337341
7 Frederick County 294154
8 Harford County 264771
9 Carroll County 176735
10 Charles County 172268
11 Washington County 156116
12 St. Mary's County 115479
13 Cecil County 105676
14 Wicomico County 105585
15 Calvert County 94828
16 Allegany County 67296
17 Worcester County 54229
18 Queen Anne's County 52682
19 Talbot County 38067
20 Caroline County 33838
21 Dorchester County 32922
22 Garrett County 28502
23 Somerset County 25044
24 Kent County 19441