Counties in Maryland by housing units

Montgomery County had the highest housing units of 24 counties in 2023, at 405,127. Kent County had the lowest, at 10,326. The median was 51,332 and the figure for Maryland was 2.55 million. Source: the U.S. Census Bureau.

Highest405,127Montgomery County

Lowest10,326Kent County

Median51,33224 counties

Maryland2,545,532History

Map of counties, 2023

Under 19K
19K to 44K
44K to 64K
64K to 170K
170K and over

count, 2023. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2023 count	Change on 2022
1	Montgomery County	405,127	+0.4%
2	Prince George's County	362,440	+0.9%
3	Baltimore County	350,296	+0.2%
4	Baltimore city	293,631	0%
5	Anne Arundel County	234,843	+0.7%
6	Howard County	124,489	+0.9%
7	Frederick County	106,480	+2.2%
8	Harford County	104,409	+0.8%
9	Carroll County	66,167	+0.6%
10	Washington County	63,965	+0.4%
11	Charles County	63,053	+1.1%
12	Worcester County	56,585	+0.3%
13	St. Mary's County	46,078	+0.9%
14	Cecil County	44,159	+0.5%
15	Wicomico County	43,925	+0.5%
16	Calvert County	35,960	+0.6%
17	Allegany County	32,810	-0.2%
18	Queen Anne's County	21,703	+1.4%
19	Talbot County	19,671	+0.3%
20	Garrett County	18,567	+0.4%
21	Dorchester County	16,416	+0.1%
22	Caroline County	13,516	+0.3%
23	Somerset County	10,916	-0.2%
24	Kent County	10,326	+0.1%

Other periods

2024
2023
2022
2021

About this ranking

All housing units, occupied and vacant: houses, apartments, mobile homes and rooms intended as separate living quarters. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

A survey estimate averaged over five years, not a count on one date.

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 B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.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 B25001: total housing units (Counties in Maryland by housing units, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Counties in Maryland by housing units, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25001: total housing units. Counties in Maryland by housing units, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in Maryland by housing units, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/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 B25001: total housing units: Counties in Maryland by housing units, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2023. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary\_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25001: total housing units: Counties in Maryland by housing units, 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-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/maryland-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Retrieved 2026-10-12.
ER  -

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Questions

Which county has the highest housing units?

Montgomery County, with 405,127 in 2023, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Kent County, with 10,326 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 B25001: total housing units. Retrieved 2026-10-12.