St. Louis population
St. Louis, Missouri had an estimated 278,144 residents on July 1, 2025, the 80th-largest city in the US. That is down 12.9% since the 2010 Census and down 20.1% since 2000.
- Population, July 2025
- 278,144-7.7% since April 2020
- People per sq mile
- 4,50761.7 sq mi of land
- Median age
- 36.815.5% are 65 or older
- Households with kids
- 18.9%with anyone under 18
Population by year, 2000 to 2025
| Year | Population | Change | Basis |
|---|---|---|---|
| 2025 | 278,144 | -2,301 | Estimate, July 1 |
| 2024 | 280,445 | -2,745 | Estimate, July 1 |
| 2023 | 283,190 | -3,319 | Estimate, July 1 |
| 2022 | 286,509 | -7,044 | Estimate, July 1 |
| 2021 | 293,553 | -7,796 | Estimate, July 1 |
| 2020 | 301,349 | +462 | April 2020 estimates base |
| 2019 | 300,887 | -2,774 | Estimate, July 1 |
| 2018 | 303,661 | -4,763 | Estimate, July 1 |
| 2017 | 308,424 | -4,502 | Estimate, July 1 |
| 2016 | 312,926 | -3,342 | Estimate, July 1 |
| 2015 | 316,268 | -1,331 | Estimate, July 1 |
| 2014 | 317,599 | -1,025 | Estimate, July 1 |
| 2013 | 318,624 | -910 | Estimate, July 1 |
| 2012 | 319,534 | +117 | Estimate, July 1 |
| 2011 | 319,417 | +123 | Estimate, July 1 |
| 2010 | 319,294 | +452 | 2010 Census (April 1) |
| 2009 | 318,842 | +887 | Estimate, July 1 |
| 2008 | 317,955 | -4 | Estimate, July 1 |
| 2007 | 317,959 | -2,172 | Estimate, July 1 |
| 2006 | 320,131 | -4,814 | Estimate, July 1 |
| 2005 | 324,945 | -6,043 | Estimate, July 1 |
| 2004 | 330,988 | -3,905 | Estimate, July 1 |
| 2003 | 334,893 | -3,564 | Estimate, July 1 |
| 2002 | 338,457 | -4,786 | Estimate, July 1 |
| 2001 | 343,243 | -4,949 | Estimate, July 1 |
| 2000 | 348,192 | April 2000 estimates base |
Year-to-year changes across 2010 and 2020 mix census counts with estimates, so small jumps at those years are partly method changes.
Frequently asked questions
What is the population of St. Louis in 2025?
The Census Bureau estimates St. Louis had 278,144 residents on July 1, 2025, making it the 80th-largest city in the US.
Is St. Louis growing?
No. St. Louis has shrunk 12.9% since the 2010 Census (319,294 people), and shrunk 7.7% since 2020.
What was the population of St. Louis in 2000?
About 348,192 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 319,294.
How dense is St. Louis?
St. Louis has about 4,507 people per square mile of land (61.7 square miles).
More about St. Louis
See cost of living, jobs and commutes in St. Louis, St. Louis weather by month, or every St. Louis ZIP code. For the biggest cities in the country, see the largest US cities.