Total Population in Sullivan County, IN
ACS 2024 5-Year Estimates
20,780
Rank #1,835/3,222 · #69 in IN
43th
Sullivan 20,780
IN 6,851,073 -99.7%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Sullivan County's total population of 20,780 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 Sullivan County for total population.
Nearby Rankings
Full ranking →| #1,832 | Union Parish, LA | 20,821 |
| #1,833 | Letcher County, KY | 20,808 |
| #1,834 | Adams County, WA | 20,800 |
| #1,835 | Sullivan County, IN | 20,780 |
| #1,836 | Nodaway County, MO | 20,774 |
| #1,837 | Texas County, OK | 20,774 |
| #1,838 | Buena Vista County, IA | 20,753 |
About Total Population
Sullivan County, Indiana has a total population of 20,780, ranking #1,835 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within Indiana, it ranks #69 of 92. This places it in the 43th 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.