Counties in Maryland by households, 2024

Montgomery County had the highest households of 24 counties in 2024, at 389,210. Somerset County had the lowest, at 8,348. The median was 41,516 and the figure for Maryland was 2.36 million. Source: the U.S. Census Bureau.

Highest389,210Montgomery County

Lowest8,348Somerset County

Median41,51624 counties

Maryland2,362,928History

Map of counties, 2024

Under 15K
15K to 35K
35K to 61K
61K to 160K
160K and over

count, 2024. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Full ranking

Rank	Counties	2024 count	Change on 2023
1	Montgomery County	389,210	+0.3%
2	Prince George's County	347,744	+0.9%
3	Baltimore County	332,801	+0.8%
4	Baltimore city	255,668	+2%
5	Anne Arundel County	224,748	+0.5%
6	Howard County	121,065	+0.8%
7	Frederick County	104,635	+2.8%
8	Harford County	101,795	+1.5%
9	Carroll County	64,285	+1.3%
10	Charles County	60,875	+1.1%
11	Washington County	59,818	+0.7%
12	St. Mary's County	42,436	+1.7%
13	Cecil County	40,595	+1.1%
14	Wicomico County	40,470	+1.1%
15	Calvert County	33,465	-0.1%
16	Allegany County	27,382	-0.2%
17	Worcester County	24,136	+1.3%
18	Queen Anne's County	19,907	+1.4%
19	Talbot County	16,433	+1.4%
20	Dorchester County	13,546	+1.7%
21	Garrett County	12,578	+0.1%
22	Caroline County	12,495	+2.6%
23	Kent County	8,493	-0.4%
24	Somerset County	8,348	+0.6%

Other periods

2024
2023
2022
2021

About this ranking

Number of households, which equals the number of occupied housing units. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

People living in group quarters, such as college dormitories, nursing homes and prisons, are not in households.

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. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25003: occupied housing units (households) (Counties in Maryland by households, 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat

MLA 9

American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Maryland by households, 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Invokely, https://invokely.ai/rankings/households/maryland-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25003: occupied housing units (households). Counties in Maryland by households, 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Also distributed by Invokely, https://invokely.ai/rankings/households/maryland-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Maryland by households, 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat, via Invokely: https://invokely.ai/rankings/households/maryland-counties (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_maryland_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in Maryland by households, 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/households/maryland-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in Maryland by households, 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat
L2  - https://invokely.ai/rankings/households/maryland-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/households/maryland-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Retrieved 2026-10-12.
ER  -

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Questions

Which county has the highest households?

Montgomery County, with 389,210 in 2024, according to the U.S. Census Bureau.

Which county has the lowest households?

Somerset County, with 8,348 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, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.