Counties in Maryland by households

Montgomery County had the highest households of 24 counties in 2023, at 387,881. Somerset County had the lowest, at 8,296. The median was 40,958 and the figure for Maryland was 2.34 million. Source: the U.S. Census Bureau.

Highest387,881Montgomery County

Lowest8,296Somerset County

Median40,95824 counties

Maryland2,339,510History

Map of counties, 2023

Under 15K
15K to 35K
35K to 60K
60K to 160K
160K and over

count, 2023. 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, 2023

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	2023 count	Change on 2022
1	Montgomery County	387,881	+0.7%
2	Prince George's County	344,586	+1%
3	Baltimore County	330,151	+0.5%
4	Baltimore city	250,608	+1.4%
5	Anne Arundel County	223,602	+0.9%
6	Howard County	120,066	+0.7%
7	Frederick County	101,807	+1.9%
8	Harford County	100,271	+1.5%
9	Carroll County	63,487	+0.3%
10	Charles County	60,199	+1.7%
11	Washington County	59,411	+0.6%
12	St. Mary's County	41,743	+1.3%
13	Cecil County	40,172	+2.1%
14	Wicomico County	40,034	+0.2%
15	Calvert County	33,485	+0.6%
16	Allegany County	27,436	-0.1%
17	Worcester County	23,827	+1.6%
18	Queen Anne's County	19,637	+1.5%
19	Talbot County	16,211	-0.4%
20	Dorchester County	13,324	+0.8%
21	Garrett County	12,565	+0.9%
22	Caroline County	12,181	+1.4%
23	Kent County	8,530	+1.9%
24	Somerset County	8,296	-0.7%

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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat

MLA 9

American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Maryland by households, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Invokely, https://invokely.ai/rankings/households/maryland-counties?period=2023. 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, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Also distributed by Invokely, https://invokely.ai/rankings/households/maryland-counties?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Maryland by households, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat, via Invokely: https://invokely.ai/rankings/households/maryland-counties?period=2023 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_maryland_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in Maryland by households, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/households/maryland-counties?period=2023. 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat
L2  - https://invokely.ai/rankings/households/maryland-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/households/maryland-counties?period=2023.
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/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Retrieved 2026-10-12.
ER  -

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Questions

Which county has the highest households?

Montgomery County, with 387,881 in 2023, according to the U.S. Census Bureau.

Which county has the lowest households?

Somerset County, with 8,296 in 2023.

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.