Median age in St. Marys, PA
Median age in St. Marys, PA was 51.6 years in 2024, according to the U.S. Census Bureau. That is up 1.3 from 2023. That is the 1st highest of 68 cities in 2024.
Median age in St. Marys, PA, 2021 to 2024
All 4 values
| Period | years |
|---|---|
| 2024 | 51.6 |
| 2023 | 50.3 |
| 2022 | 50.5 |
| 2021 | 49.6 |
Compared with Pennsylvania and United States
| Place | 2024 |
|---|---|
| St. Marys, PA | 51.6 |
| Pennsylvania | 40.9 |
| United States | 38.9 |
Rankings
- EU countries by median age
- US states by median age
- US cities by median age
- Cities in Pennsylvania 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, St. Marys, PA, 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, St. Marys, PA, 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/st-marys-pa. 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, St. Marys, PA, 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/st-marys-pa.
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, St. Marys, PA, 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/st-marys-pa (Accessed: 12 October 2026).
BibTeX
@misc{census_median_age_st_marys_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, St. Marys, PA, 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/st-marys-pa. 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, St. Marys, PA, 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/st-marys-pa
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/en/median-age/st-marys-pa.
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 -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
What is the latest median age in St. Marys, PA? Cite the source.
get_value {"indicator":"median_age","place":"us-place-4267344"}
GET https://invokely.ai/api/v1/value?indicator=median_age&place=us-place-4267344Questions
What is the median age in St. Marys, PA?
Median age in St. Marys, PA was 51.6 years in 2024, according to the U.S. Census Bureau. That is up 1.3 from 2023. That is the 1st highest of 68 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 St. Marys, PA?
51.6 years in 2024, the highest value since 2021 in this series.