Data / Rankings / Housing units / Counties in Connecticut

Counties in Connecticut by housing units

Capitol Planning Region had the highest housing units of 9 counties in 2023, at 415,269. Northeastern Connecticut Planning Region had the lowest, at 41,629. The median was 125,728 and the figure for Connecticut was 1.54 million. Source: the U.S. Census Bureau.

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Highest415,269Capitol Planning Region
Lowest41,629Northeastern Connecticut Planning Region
Median125,7289 counties
Connecticut1,536,049History

Map of counties, 2023

Capitol Planning Region: 415,269 countGreater Bridgeport Planning Region: 125,678 countLower Connecticut River Valley Planning Region: 82,771 countNaugatuck Valley Planning Region: 191,984 countNortheastern Connecticut Planning Region: 41,629 countNorthwest Hills Planning Region: 55,665 countSouth Central Connecticut Planning Region: 247,217 countSoutheastern Connecticut Planning Region: 125,728 countWestern Connecticut Planning Region: 250,108 count
  • Under 72K
  • 72K to 130K
  • 130K to 180K
  • 180K to 250K
  • 250K 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

Capitol Planning Region: 415,269 countCapitol Planning Region415,269Western Connecticut Planning Region: 250,108 countWestern Connecticut Planning Regi…250,108South Central Connecticut Planning Region: 247,217 countSouth Central Connecticut Plannin…247,217Naugatuck Valley Planning Region: 191,984 countNaugatuck Valley Planning Region191,984Southeastern Connecticut Planning Region: 125,728 countSoutheastern Connecticut Planning…125,728Greater Bridgeport Planning Region: 125,678 countGreater Bridgeport Planning Region125,678Lower Connecticut River Valley Planning Region: 82,771 countLower Connecticut River Valley Pl…82,771Northwest Hills Planning Region: 55,665 countNorthwest Hills Planning Region55,665Northeastern Connecticut Planning Region: 41,629 countNortheastern Connecticut Planning…41,629Capitol Planning Region: 415,269 countCapitol Planning Region415,269Western Connecticut Planning Region: 250,108 countWestern Connecticut Planning Region250,108South Central Connecticut Planning Region: 247,217 countSouth Central Connecticut Planning Region247,217Naugatuck Valley Planning Region: 191,984 countNaugatuck Valley Planning Region191,984Southeastern Connecticut Planning Region: 125,728 countSoutheastern Connecticut Planning Region125,728Greater Bridgeport Planning Region: 125,678 countGreater Bridgeport Planning Region125,678Lower Connecticut River Valley Planning Region: 82,771 countLower Connecticut River Valley Planning Region82,771Northwest Hills Planning Region: 55,665 countNorthwest Hills Planning Region55,665Northeastern Connecticut Planning Region: 41,629 countNortheastern Connecticut Planning Region41,629
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Full ranking

RankCounties2023
count		Change on 2022
1Capitol Planning Region415,269+0.3%
2Western Connecticut Planning Region250,108+0.5%
3South Central Connecticut Planning Region247,217+0.4%
4Naugatuck Valley Planning Region191,984+0.2%
5Southeastern Connecticut Planning Region125,728+0.3%
6Greater Bridgeport Planning Region125,678+0.2%
7Lower Connecticut River Valley Planning Region82,771+0.2%
8Northwest Hills Planning Region55,665+0.1%
9Northeastern Connecticut Planning Region41,629+0.3%

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 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 Connecticut 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 Connecticut 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/connecticut-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 Connecticut 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/connecticut-counties?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in Connecticut 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/connecticut-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_connecticut_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25001: total housing units: Counties in Connecticut 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/connecticut-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 Connecticut 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/connecticut-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/connecticut-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?

Capitol Planning Region, with 415,269 in 2023, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Northeastern Connecticut Planning Region, with 41,629 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.

Housing units: other rankings

Counties in Connecticut: more rankings