O'Brien
County in Iowa (USA)
Contents: Population
The population development of O'Brien as well as related information and services (Wikipedia, Google, images).
| Name | Status | Population Census 1990-04-01 | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Census 2020-04-01 | Population Estimate 2021-07-01 | |
|---|---|---|---|---|---|---|---|
| O'Brien | County | 15,444 | 15,102 | 14,398 | 14,182 | 14,015 | |
| USA [United States of America] | Federal Republic | 248,709,873 | 281,421,906 | 308,745,538 | 331,449,281 | 331,893,745 |
Source: U.S. Census Bureau (web).
Explanation: All population totals refer to 2020 boundaries.
Further information about the population structure:
| Gender (E 2019) | |
|---|---|
| Males | 6,898 |
| Females | 6,855 |
| Age Groups (E 2019) | |
|---|---|
| 0-14 years | 2,743 |
| 15-64 years | 8,170 |
| 65+ years | 2,840 |
| Age Distribution (E 2019) | |
|---|---|
| 0-9 years | 1,760 |
| 10-19 years | 1,844 |
| 20-29 years | 1,551 |
| 30-39 years | 1,542 |
| 40-49 years | 1,446 |
| 50-59 years | 1,752 |
| 60-69 years | 1,843 |
| 70-79 years | 1,045 |
| 80+ years | 970 |
| »Race« (C 2020) | |
|---|---|
| White | 12,825 |
| Black/African American | 161 |
| Indigenous | 80 |
| Asian | 80 |
| Pacific Islander | 11 |
| Some other | 376 |
| 2 or more | 649 |
| Ethnicity (C 2020) | |
|---|---|
| Hispanic or Latino | 985 |
| Other | 13,197 |