Data / Rankings / Housing units / Cities in Maine

Cities in Maine by housing units

Portland, ME had the highest housing units of 11 cities in 2021, at 34,812. Waterville, ME had the lowest, at 6,864. The median was 10,350 and the figure for Maine was 737,782. Source: the U.S. Census Bureau.

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Highest34,812Portland, ME
Lowest6,864Waterville, ME
Median10,35011 cities
Maine737,782History

All cities, 2021

Portland, ME: 34,812 countPortland, ME34,812Lewiston, ME: 16,483 countLewiston, ME16,483Bangor, ME: 15,398 countBangor, ME15,398South Portland, ME: 12,422 countSouth Portland, ME12,422Auburn, ME: 11,085 countAuburn, ME11,085Biddeford, ME: 10,350 countBiddeford, ME10,350Augusta, ME: 10,225 countAugusta, ME10,225Sanford, ME: 9,806 countSanford, ME9,806Westbrook, ME: 9,464 countWestbrook, ME9,464Saco, ME: 9,410 countSaco, ME9,410Waterville, ME: 6,864 countWaterville, ME6,864Portland, ME: 34,812 countPortland, ME34,812Lewiston, ME: 16,483 countLewiston, ME16,483Bangor, ME: 15,398 countBangor, ME15,398South Portland, ME: 12,422 countSouth Portland, ME12,422Auburn, ME: 11,085 countAuburn, ME11,085Biddeford, ME: 10,350 countBiddeford, ME10,350Augusta, ME: 10,225 countAugusta, ME10,225Sanford, ME: 9,806 countSanford, ME9,806Westbrook, ME: 9,464 countWestbrook, ME9,464Saco, ME: 9,410 countSaco, ME9,410Waterville, ME: 6,864 countWaterville, ME6,864
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.

Full ranking

RankCities2021
count
1Portland, ME34,812
2Lewiston, ME16,483
3Bangor, ME15,398
4South Portland, ME12,422
5Auburn, ME11,085
6Biddeford, ME10,350
7Augusta, ME10,225
8Sanford, ME9,806
9Westbrook, ME9,464
10Saco, ME9,410
11Waterville, ME6,864

Other periods

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 cities 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, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-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, US cities (incorporated places of 10,000 or more) (Cities in Maine by housing units, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, US cities (incorporated places of 10,000 or more), Cities in Maine by housing units, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/maine-cities?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25001: total housing units, US cities (incorporated places of 10,000 or more). Cities in Maine by housing units, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/maine-cities?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, US cities (incorporated places of 10,000 or more), Cities in Maine by housing units, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/maine-cities?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_cities_in_maine_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25001: total housing units, US cities (incorporated places of 10,000 or more): Cities in Maine by housing units, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/maine-cities?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-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, US cities (incorporated places of 10,000 or more): Cities in Maine by housing units, 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/maine-cities?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/maine-cities?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which city has the highest housing units?

Portland, ME, with 34,812 in 2021, according to the U.S. Census Bureau.

Which city has the lowest housing units?

Waterville, ME, with 6,864 in 2021.

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, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.

Housing units: other rankings

Cities in Maine: more rankings