Demographics & People — Mason City, Illinois
Population Overview
| Population (Census) | 2,094 |
|---|
| Estimated 2026 | ~2,300 |
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| Median Age | 49.8 |
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| Total Households | 1,009 |
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| Family Households | 554 |
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| Average Household Size | 2.01 |
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| Diversity Index | 0.0383 (relatively homogeneous) |
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Race & Ethnicity
| White | 2,010 |
|---|
| Black or African American | 40 |
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| Asian | 0 |
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| Hispanic or Latino | 0 |
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Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 689 |
| German | 574 |
| English | 383 |
| Irish | 276 |
| American | 234 |
| Other groups | 208 |
| Polish | 91 |
| French (except Basque) | 61 |
| Italian | 54 |
| Australian | 39 |
Language
| English Only | 1,955 |
|---|
| Spanish | 15 |
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| Population 5+ | 1,990 |
|---|
Veterans
| Veterans | 95 |
|---|
| Population 18+ | 1,796 |
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Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Mason City, Illinois.
