Counties in Maryland by housing units

Montgomery County had the highest housing units of 24 counties in 2022, at 403,643. Kent County had the lowest, at 10,320. The median was 51,032 and the figure for Maryland was 2.53 million. Source: the U.S. Census Bureau.

Highest403,643Montgomery County

Lowest10,320Kent County

Median51,03224 counties

Maryland2,531,075History

Map of counties, 2022

Under 19K
19K to 44K
44K to 63K
63K to 170K
170K and over

count, 2022. 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, 2022

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	2022 count	Change on 2021
1	Montgomery County	403,643	+0.4%
2	Prince George's County	359,176	+0.9%
3	Baltimore County	349,471	+0.4%
4	Baltimore city	293,555	-0.1%
5	Anne Arundel County	233,163	+0.8%
6	Howard County	123,428	+1%
7	Frederick County	104,217	+2.2%
8	Harford County	103,552	+0.8%
9	Carroll County	65,804	+0.5%
10	Washington County	63,701	+0.4%
11	Charles County	62,362	+1%
12	Worcester County	56,399	+0.3%
13	St. Mary's County	45,665	+1.2%
14	Cecil County	43,957	+0.4%
15	Wicomico County	43,708	+0.5%
16	Calvert County	35,749	+0.7%
17	Allegany County	32,882	-0.1%
18	Queen Anne's County	21,405	+1.1%
19	Talbot County	19,606	0%
20	Garrett County	18,501	-0%
21	Dorchester County	16,400	-0.2%
22	Caroline County	13,473	+0.1%
23	Somerset County	10,938	-0.1%
24	Kent County	10,320	-0.2%

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/2022/table-based-SF/data/5YRData/acsdt5y2022-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, 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Counties in Maryland by housing units, 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2022. 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, 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in Maryland by housing units, 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/maryland-counties?period=2022 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_maryland_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25001: total housing units: Counties in Maryland by housing units, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2022. 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/2022/table-based-SF/data/5YRData/acsdt5y2022-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, 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/maryland-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/maryland-counties?period=2022.
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/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Retrieved 2026-10-12.
ER  -

Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Embed code

<iframe src="https://invokely.ai/embed/rankings/housing-units/maryland-counties?period=2022" width="760" height="500" title="Counties in Maryland by housing units, 2022, chart from Invokely" loading="lazy" style="border:0;width:100%;max-width:760px" referrerpolicy="strict-origin-when-cross-origin"></iframe>

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

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 housing units using official data, and cite the source.

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

Montgomery County, with 403,643 in 2022, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Kent County, with 10,320 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, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.