Maryland Counties by Population (2025)

by Kristen Carney Kristen Carney

Updated: December 17, 2024

The most populous counties in Maryland are Montgomery County with 1,058,474, Prince George's County at 947,430, Baltimore County with 844,703, Anne Arundel County at 594,582, and Baltimore city/county with 565,239. 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 2023 Population Estimates Program.

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!

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Rank County Population
1 Montgomery County 1,058,474
2 Prince George's County 947,430
3 Baltimore County 844,703
4 Anne Arundel County 594,582
5 Baltimore city/county 565,239
6 Howard County 336,001
7 Frederick County 293,391
8 Harford County 264,644
9 Carroll County 176,639
10 Charles County 171,973
11 Washington County 155,813
12 St. Mary's County 115,281
13 Cecil County 105,672
14 Wicomico County 104,800
15 Calvert County 94,728
16 Allegany County 67,273
17 Worcester County 54,171
18 Queen Anne's County 52,508
19 Talbot County 37,823
20 Caroline County 33,593
21 Dorchester County 32,879
22 Garrett County 28,423
23 Somerset County 24,910
24 Kent County 19,303

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2023. Population Division. May 2024.

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