Total Population in O'Brien County, IA
ACS 2024 5-Year Estimates
14,126
Rank #2,215/3,222 · #56 in IA
31th
O'Brien 14,126
IA 3,210,507 -99.6%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How O'Brien County's total population of 14,126 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 O'Brien County for total population.
Nearby Rankings
Full ranking →| #2,212 | Rusk County, WI | 14,179 |
| #2,213 | Smith County, MS | 14,132 |
| #2,214 | Screven County, GA | 14,130 |
| #2,215 | O'Brien County, IA | 14,126 |
| #2,216 | Allamakee County, IA | 14,092 |
| #2,217 | Price County, WI | 14,092 |
| #2,218 | Wetzel County, WV | 14,078 |
About Total Population
O'Brien County, Iowa has a total population of 14,126, ranking #2,215 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within Iowa, it ranks #56 of 99. This places it in the 31th 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.