Data / Rankings / Housing vacancy rate, all vacant units (US) / Counties in Connecticut

Counties in Connecticut by housing vacancy rate, all vacant units (US)

Northwest Hills Planning Region had the highest housing vacancy rate, all vacant units (US) of 9 counties in 2023, at 15.5%. Greater Bridgeport Planning Region had the lowest, at 5.8%. The median was 7.1% and the figure for Connecticut was 7.5%. Source: the U.S. Census Bureau.

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Highest15.5Northwest Hills Planning Region
Lowest5.8Greater Bridgeport Planning Region
Median7.19 counties
Connecticut7.5History

Map of counties, 2023

Capitol Planning Region: 6.3 %Greater Bridgeport Planning Region: 5.8 %Lower Connecticut River Valley Planning Region: 11.1 %Naugatuck Valley Planning Region: 7.1 %Northeastern Connecticut Planning Region: 5.9 %Northwest Hills Planning Region: 15.5 %South Central Connecticut Planning Region: 7.9 %Southeastern Connecticut Planning Region: 8.9 %Western Connecticut Planning Region: 7.1 %
  • Under 6.2
  • 6.2 to 7.1
  • 7.1 to 7.7
  • 7.7 to 9.7
  • 9.7 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Northwest Hills Planning Region: 15.5 %Northwest Hills Planning Region15.5Lower Connecticut River Valley Planning Region: 11.1 %Lower Connecticut River Valley Pl…11.1Southeastern Connecticut Planning Region: 8.9 %Southeastern Connecticut Planning…8.9South Central Connecticut Planning Region: 7.9 %South Central Connecticut Plannin…7.9Western Connecticut Planning Region: 7.1 %Western Connecticut Planning Regi…7.1Naugatuck Valley Planning Region: 7.1 %Naugatuck Valley Planning Region7.1Capitol Planning Region: 6.3 %Capitol Planning Region6.3Northeastern Connecticut Planning Region: 5.9 %Northeastern Connecticut Planning…5.9Greater Bridgeport Planning Region: 5.8 %Greater Bridgeport Planning Region5.8Northwest Hills Planning Region: 15.5 %Northwest Hills Planning Region15.5Lower Connecticut River Valley Planning Region: 11.1 %Lower Connecticut River Valley Planning Region11.1Southeastern Connecticut Planning Region: 8.9 %Southeastern Connecticut Planning Region8.9South Central Connecticut Planning Region: 7.9 %South Central Connecticut Planning Region7.9Western Connecticut Planning Region: 7.1 %Western Connecticut Planning Region7.1Naugatuck Valley Planning Region: 7.1 %Naugatuck Valley Planning Region7.1Capitol Planning Region: 6.3 %Capitol Planning Region6.3Northeastern Connecticut Planning Region: 5.9 %Northeastern Connecticut Planning Region5.9Greater Bridgeport Planning Region: 5.8 %Greater Bridgeport Planning Region5.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Northwest Hills Planning Region15.5-1.8 pts
2Lower Connecticut River Valley Planning Region11.1-0.5 pts
3Southeastern Connecticut Planning Region8.9-0.3 pts
4South Central Connecticut Planning Region7.9-0.3 pts
5Western Connecticut Planning Region7.1-0.3 pts
6Naugatuck Valley Planning Region7.1-0.2 pts
7Capitol Planning Region6.3-0.3 pts
8Northeastern Connecticut Planning Region5.9-1.1 pts
9Greater Bridgeport Planning Region5.8-0.5 pts

Other periods

About this ranking

Vacant housing units as a percentage of all housing units.

More on how it is measured
  • Vacant units include those for rent or for sale, rented or sold but not yet occupied, for seasonal, recreational or occasional use, for migrant workers, and other vacant units.
  • United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

This gross rate counts seasonal and other off-market vacant units, so it is much higher than the rental and homeowner vacancy rates of the Housing Vacancy Survey (rental_vacancy_rate and homeowner_vacancy_rate) and cannot be compared with them. Counties with many holiday homes have high rates.

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 B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.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 B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs (Counties in Connecticut by housing vacancy rate, all vacant units (US), 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.dat

MLA 9

American Community Survey 5-year estimates, table B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs, Counties in Connecticut by housing vacancy rate, all vacant units (US), 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.dat. Invokely, https://invokely.ai/rankings/housing-vacancy-rate-all-vacant-units/connecticut-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs. Counties in Connecticut by housing vacancy rate, all vacant units (US), 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-vacancy-rate-all-vacant-units/connecticut-counties?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs, Counties in Connecticut by housing vacancy rate, all vacant units (US), 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.dat, via Invokely: https://invokely.ai/rankings/housing-vacancy-rate-all-vacant-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 B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs: Counties in Connecticut by housing vacancy rate, all vacant units (US), 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-vacancy-rate-all-vacant-units/connecticut-counties?period=2023. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs: Counties in Connecticut by housing vacancy rate, all vacant units (US), 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-b25002.dat
L2  - https://invokely.ai/rankings/housing-vacancy-rate-all-vacant-units/connecticut-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-vacancy-rate-all-vacant-units/connecticut-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25002.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest housing vacancy rate, all vacant units (US)?

Northwest Hills Planning Region, with 15.5% in 2023, according to the U.S. Census Bureau.

Which county has the lowest housing vacancy rate, all vacant units (US)?

Greater Bridgeport Planning Region, with 5.8% 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 B25002: vacant housing units as a percentage of all housing units, calculated with stored inputs. Retrieved 2026-10-12.

Housing vacancy rate, all vacant units (US): other rankings

Counties in Connecticut: more rankings