Total Population in St. Mary's County, MD
ACS 2024 5-Year Estimates
How St. Mary's County Compares
National Distribution
Where St. Mary's County falls among all 3,222 U.S. counties for total population.
■ St. Mary's County: 115,126
Ranking Context
| Rank | County | Value |
|---|---|---|
| #545 | Wayne County, OH | 116,588 |
| #546 | Calhoun County, AL | 116,090 |
| #547 | Potter County, TX | 115,975 |
| #548 | St. Mary's County, MD | 115,126 |
| #549 | Jefferson County, NY | 115,040 |
| #550 | Albemarle County, VA | 114,919 |
| #551 | Pennington County, SD | 113,512 |
Total Population in St. Mary's County, Maryland
St. Mary's County, Maryland has a total population of 115,126, which ranks #548 of 3,222 out of 3,222 counties nationwide. This is 100.0% below the national value of 330M.
Within Maryland, St. Mary's County ranks #12 of 24 out of 24 counties. This places it in the 83th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.