Average household size in Union County
Average household size in Union County was 2.4 persons per household in 2024, according to the U.S. Census Bureau. That is up 0.4% from 2023. That is the 43rd highest of 102 counties in 2024.
Average household size in Union County, 2021 to 2024
All 4 values
| Period | persons per household |
|---|---|
| 2024 | 2.4 |
| 2023 | 2.3 |
| 2022 | 2.4 |
| 2021 | 2.5 |
Compared with Illinois and United States
| Place | 2024 |
|---|---|
| Union County | 2.4 |
| Illinois | 2.5 |
| United States | 2.5 |
Union County compared with nearby places
- Under 2.2
- 2.2 to 2.3
- 2.3 to 2.4
- 2.4 to 2.5
- 2.5 and over
Rankings
- EU countries by average household size
- US states by average household size
- Counties in Illinois by average household size
Definition
Average number of persons per private household. EU countries: EU-SILC. United States: American Community Survey five-year estimate of people in households divided by occupied housing units, where the period shown is the last year of the five-year span.
Covers private households only; people living in institutions or other group quarters are excluded. EU-SILC figures refer to the survey year. The EU and US surveys differ, so their figures are not strictly comparable.
How to cite
U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25010: average household size of occupied housing units (Average household size, Union 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-b25010.dat
MLA 9
American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, Average household size, Union 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-b25010.dat. Invokely, https://invokely.ai/en/average-household-size/union-county-illinois. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. Average household size, Union 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-b25010.dat. Also distributed by Invokely, https://invokely.ai/en/average-household-size/union-county-illinois.
Harvard
U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, Average household size, Union County, 2021 to 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat, via Invokely: https://invokely.ai/en/average-household-size/union-county-illinois (Accessed: 12 October 2026).
BibTeX
@misc{census_average_household_size_union_2024,
author = {{U.S. Census Bureau}},
title = {{American Community Survey 5-year estimates, table B25010: average household size of occupied housing units: Average household size, Union 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-b25010.dat},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/en/average-household-size/union-county-illinois. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - American Community Survey 5-year estimates, table B25010: average household size of occupied housing units: Average household size, Union 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-b25010.dat
L2 - https://invokely.ai/en/average-household-size/union-county-illinois
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/en/average-household-size/union-county-illinois.
N1 - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
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What is the latest average household size in Union County? Cite the source.
get_value {"indicator":"average_household_size","place":"us-county-17181"}
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What is the average household size in Union County?
Average household size in Union County was 2.4 persons per household in 2024, according to the U.S. Census Bureau. That is up 0.4% from 2023. That is the 43rd highest of 102 counties in 2024.
Where does this figure come from?
U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. Retrieved by Invokely on 2026-10-12.
What was the highest average household size in Union County?
2.5 persons per household in 2021, the highest value since 2021 in this series.