Counties in Maryland by population

Name: Counties in Maryland by population, 2022
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Montgomery County had the highest population of 24 counties in 2022, at 1.06 million. Kent County had the lowest, at 19,342. The median was 109,986 and the figure for Maryland was 6.18 million. Source: the U.S. Census Bureau.

Highest1,058,546Montgomery County

Lowest19,342Kent County

Median109,98624 counties

Maryland6,183,257History

All counties, 2022

CSV Chart (SVG)

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

Full ranking

Rank	Counties	2022 persons	Change on 2021
1	Montgomery County	1,058,546	+0.3%
2	Prince George's County	952,326	-0.5%
3	Baltimore County	847,672	-0.3%
4	Anne Arundel County	598,102	+0.4%
5	Baltimore city	570,475	-1%
6	Howard County	335,900	+0.2%
7	Frederick County	287,899	+2.6%
8	Harford County	263,749	+0.2%
9	Carroll County	175,494	+0.7%
10	Charles County	170,246	+0.8%
11	Washington County	154,503	+0.1%
12	St. Mary's County	114,841	+0.2%
13	Wicomico County	105,131	+1%
14	Cecil County	104,908	+0.8%
15	Calvert County	94,655	+0.4%
16	Allegany County	67,013	-0.8%
17	Worcester County	53,974	+1.1%
18	Queen Anne's County	51,785	+1.7%
19	Talbot County	37,901	+0.5%
20	Caroline County	33,528	+0.3%
21	Dorchester County	32,605	0%
22	Garrett County	28,558	-0.6%
23	Somerset County	24,104	0%
24	Kent County	19,342	+0.6%

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.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

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

rank_places {"indicator":"population","level":"province","within":"Maryland","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population&level=province&within=Maryland&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest population?

Montgomery County, with 1.06 million in 2022, according to the U.S. Census Bureau.

Which county has the lowest population?

Kent County, with 19,342 in 2022.

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.