Counties in Maryland by population

Name: Counties in Maryland by population, 2024
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Montgomery County had the highest population of 24 counties in 2024, at 1.07 million. Kent County had the lowest, at 19,517. The median was 111,428 and the figure for Maryland was 6.25 million. Source: the U.S. Census Bureau.

Highest1,073,045Montgomery County

Lowest19,517Kent County

Median111,42824 counties

Maryland6,245,314History

All counties, 2024

CSV Chart (SVG)

persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

Rank	Counties	2024 persons	Change on 2023
1	Montgomery County	1,073,045	+0.8%
2	Prince George's County	964,596	+1%
3	Baltimore County	848,438	+0.2%
4	Anne Arundel County	601,141	+0.3%
5	Baltimore city	570,053	+0.4%
6	Howard County	337,795	+0.4%
7	Frederick County	298,855	+1.7%
8	Harford County	265,624	+0.3%
9	Carroll County	176,790	+0.1%
10	Charles County	174,499	+1.4%
11	Washington County	157,140	+1.1%
12	St. Mary's County	116,216	+0.8%
13	Wicomico County	106,639	+0.6%
14	Cecil County	106,567	+0.7%
15	Calvert County	94,621	-0.1%
16	Allegany County	66,984	-0.1%
17	Worcester County	54,381	+0.3%
18	Queen Anne's County	53,681	+2%
19	Talbot County	38,295	+0.7%
20	Caroline County	34,059	+0.9%
21	Dorchester County	33,208	+0.7%
22	Garrett County	28,417	-0.2%
23	Somerset County	24,753	+0.6%
24	Kent County	19,517	+0.4%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

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. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Rank Counties in Maryland by population using official data, and cite the source.

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Questions

Which county has the highest population?

Montgomery County, with 1.07 million in 2024, according to the U.S. Census Bureau.

Which county has the lowest population?

Kent County, with 19,517 in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.