Total Population in Washington County, MD
ACS 2024 5-Year Estimates
155,709
Rank #447/3,222 · #11 in MD
86th
Washington 155,709
MD 6,206,011 -97.5%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Washington County's total population of 155,709 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Washington County for total population.
Nearby Rankings
Full ranking →| #444 | Bibb County, GA | 156,578 |
| #445 | Santa Fe County, NM | 156,105 |
| #446 | Merrimack County, NH | 155,967 |
| #447 | Washington County, MD | 155,709 |
| #448 | Monroe County, MI | 155,505 |
| #449 | Penobscot County, ME | 154,710 |
| #450 | Scott County, MN | 154,557 |
About Total Population
Washington County, Maryland has a total population of 155,709, ranking #447 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within Maryland, it ranks #11 of 24. This places it in the 86th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.