Data / Housing units / St. Mary's County

Housing units in St. Mary's County

Housing units in St. Mary's County was 46,385 in 2024, according to the U.S. Census Bureau. That is up 0.7% from 2023. That is the 13th highest of 24 counties in 2024.

2024, count46,385
Change on 2023+0.7%
Rank13th of 24Counties in Maryland ranked
Series high46,3852024
Series low45,1382021

Next release: Friday, 29 January 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

Get an email when a new figure is out or this one is revised.
Keep it in a collection in your library.

Housing units in St. Mary's County, 2021 to 2024

45K45.3K45.5K45.8K46K46.3K46.5K20212022202320242021: 45,138 count2022: 45,665 count2023: 46,078 count2024: 46,385 count45K45.5K46K46.5K202120242021: 45,138 count2022: 45,665 count2023: 46,078 count2024: 46,385 count
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12, published 2026-01-29.
All 4 values
Periodcount
202446,385
202346,078
202245,665
202145,138

Compared with Maryland and United States

Place2024
St. Mary's County46,385
Maryland2,560,784
United States143,775,355

St. Mary's County compared with nearby places

Allegany County: 32,720 countAnne Arundel County: 236,262 countBaltimore County: 350,821 countCalvert County: 36,119 countCaroline County: 13,531 countCarroll County: 66,768 countCecil County: 44,355 countCharles County: 63,813 countDorchester County: 16,433 countFrederick County: 108,924 countGarrett County: 18,642 countHarford County: 105,468 countHoward County: 125,286 countKent County: 10,363 countMontgomery County: 406,531 countPrince George's County: 365,506 countQueen Anne's County: 22,038 countSt. Mary's County: 46,385 countSomerset County: 10,928 countTalbot County: 19,720 countWashington County: 64,145 countWicomico County: 44,127 countWorcester County: 56,867 countBaltimore city: 295,032 count
  • Under 19K
  • 19K to 44K
  • 44K to 64K
  • 64K to 170K
  • 170K and over
Housing units, 2024, count. St. Mary's County is outlined. Same source and period for every area shown. Source: U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

Definition

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.

Report a problem with this figure

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/2024/table-based-SF/data/5YRData/acsdt5y2024-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 (Housing units, St. Mary's County, 2021 to 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Housing units, St. Mary's County, 2021 to 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Invokely, https://invokely.ai/en/housing-units/st-marys-county-maryland. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25001: total housing units. Housing units, St. Mary's County, 2021 to 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Also distributed by Invokely, https://invokely.ai/en/housing-units/st-marys-county-maryland.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Housing units, St. Mary's County, 2021 to 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat, via Invokely: https://invokely.ai/en/housing-units/st-marys-county-maryland (Accessed: 12 October 2026).

BibTeX
@misc{census_housing_units_st_mary_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25001: total housing units: Housing units, St. Mary's County, 2021 to 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/housing-units/st-marys-county-maryland. 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/2024/table-based-SF/data/5YRData/acsdt5y2024-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: Housing units, St. Mary's County, 2021 to 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-b25001.dat
L2  - https://invokely.ai/en/housing-units/st-marys-county-maryland
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/housing-units/st-marys-county-maryland.
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/2024/table-based-SF/data/5YRData/acsdt5y2024-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.

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:

What is the latest housing units in St. Mary's County? Cite the source.
get_value {"indicator":"housing_units","place":"us-county-24037"}
GET https://invokely.ai/api/v1/value?indicator=housing_units&place=us-county-24037

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

Questions

What is the housing units in St. Mary's County?

Housing units in St. Mary's County was 46,385 in 2024, according to the U.S. Census Bureau. That is up 0.7% from 2023. That is the 13th highest of 24 counties in 2024.

Where does this figure come from?

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

What was the highest housing units in St. Mary's County?

46,385 in 2024, the highest value since 2021 in this series.

Related statistics for St. Mary's County

All statistics for St. Mary's County | St. Mary's County in figures