Data / Rankings / Housing units / Cities in Delaware

Cities in Delaware by housing units

Wilmington, DE had the highest housing units of 6 cities in 2021, at 35,684. Smyrna, DE had the lowest, at 4,876. The median was 9,866 and the figure for Delaware was 445,104. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest35,684Wilmington, DE
Lowest4,876Smyrna, DE
Median9,8666 cities
Delaware445,104History

All cities, 2021

Wilmington, DE: 35,684 countWilmington, DE35,684Dover, DE: 16,276 countDover, DE16,276Newark, DE: 10,768 countNewark, DE10,768Middletown, DE: 8,964 countMiddletown, DE8,964Milford, DE: 4,907 countMilford, DE4,907Smyrna, DE: 4,876 countSmyrna, DE4,876Wilmington, DE: 35,684 countWilmington, DE35,684Dover, DE: 16,276 countDover, DE16,276Newark, DE: 10,768 countNewark, DE10,768Middletown, DE: 8,964 countMiddletown, DE8,964Milford, DE: 4,907 countMilford, DE4,907Smyrna, DE: 4,876 countSmyrna, DE4,876
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
1Wilmington, DE35,684
2Dover, DE16,276
3Newark, DE10,768
4Middletown, DE8,964
5Milford, DE4,907
6Smyrna, DE4,876

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 Delaware 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 Delaware 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/delaware-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 Delaware 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/delaware-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 Delaware 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/delaware-cities?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_cities_in_delaware_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 Delaware 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/delaware-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 Delaware 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/delaware-cities?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/delaware-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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Rank Cities in Delaware by housing units using official data, and cite the source.
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Questions

Which city has the highest housing units?

Wilmington, DE, with 35,684 in 2021, according to the U.S. Census Bureau.

Which city has the lowest housing units?

Smyrna, DE, with 4,876 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 Delaware: more rankings