Demographics & People — Mason City, Iowa
Population Overview
| Population (Census) | 27,135 |
| Estimated 2026 | ~26,900 |
| Median Age | 42.5 |
| Total Households | 12,678 |
| Family Households | 7,104 |
| Average Household Size | 2.08 |
| Diversity Index | 0.2044 (somewhat diverse) |
Race & Ethnicity
| White | 23,995 |
| Black or African American | 905 |
| Asian | 336 |
| Hispanic or Latino | 1,759 |
Heritage & Ancestry
| Group | Count |
| German | 8,672 |
| Unclassified or not reported | 7,941 |
| Norwegian | 3,619 |
| Other groups | 3,581 |
| Irish | 2,986 |
| Hispanic: Hispanic or Latino | 1,794 |
| Hispanic: Mexican | 1,631 |
| English | 1,487 |
| American | 854 |
| Czech | 615 |
Language
| English Only | 24,667 |
| Spanish | 703 |
| Population 5+ | 25,812 |
Veterans
| Veterans | 1,724 |
| Population 18+ | 21,841 |
Commuting
| Mean Commute Time | 13.5 minutes |
| Work from Home | 4.3% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Mason City, Iowa.