Median age in Oswego, IL
Median age in Oswego, IL was 38.7 years in 2024, according to the U.S. Census Bureau. That is down 1 from 2023. That is the 137th highest of 225 cities in 2024.
Median age in Oswego, IL, 2021 to 2024
All 4 values
| Period | years |
|---|---|
| 2024 | 38.7 |
| 2023 | 39.7 |
| 2022 | 39.6 |
| 2021 | 39.3 |
Compared with Illinois and United States
| Place | 2024 |
|---|---|
| Oswego, IL | 38.7 |
| Illinois | 39 |
| United States | 38.9 |
Rankings
- EU countries by median age
- US states by median age
- US cities by median age
- Cities in Illinois by median age
Definition
Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span. Canada: on 1 July, Statistics Canada population estimates.
How to cite
U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more) (Median age, Oswego, IL, 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-b01002.dat
MLA 9
American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more), Median age, Oswego, IL, 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-b01002.dat. Invokely, https://invokely.ai/en/median-age/oswego-il. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Median age, Oswego, IL, 2021 to 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Also distributed by Invokely, https://invokely.ai/en/median-age/oswego-il.
Harvard
U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more), Median age, Oswego, IL, 2021 to 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat, via Invokely: https://invokely.ai/en/median-age/oswego-il (Accessed: 12 October 2026).
BibTeX
@misc{census_median_age_oswego_il_2024,
author = {{U.S. Census Bureau}},
title = {{American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more): Median age, Oswego, IL, 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-b01002.dat},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/en/median-age/oswego-il. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more): Median age, Oswego, IL, 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-b01002.dat
L2 - https://invokely.ai/en/median-age/oswego-il
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/en/median-age/oswego-il.
N1 - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-12.
ER -
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What is the median age in Oswego, IL?
Median age in Oswego, IL was 38.7 years in 2024, according to the U.S. Census Bureau. That is down 1 from 2023. That is the 137th highest of 225 cities in 2024.
Where does this figure come from?
U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Retrieved by Invokely on 2026-10-12.
What was the highest median age in Oswego, IL?
39.7 years in 2023, the highest value since 2021 in this series.