Demographics & People — Mariemont, Ohio
Population Overview
| Population (Census) | 3,477 |
|---|
| Estimated 2026 | ~3,500 |
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| Median Age | 41.1 |
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| Total Households | 1,327 |
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| Family Households | 876 |
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| Average Household Size | 2.58 |
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| Diversity Index | 0.0283 (relatively homogeneous) |
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Race & Ethnicity
| White | 3,360 |
|---|
| Black or African American | 49 |
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| Asian | 0 |
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| Hispanic or Latino | 0 |
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Heritage & Ancestry
| Group | Count |
|---|
| German | 1,073 |
| English | 937 |
| Irish | 845 |
| Unclassified or not reported | 548 |
| Italian | 276 |
| Polish | 196 |
| Other groups | 160 |
| American | 144 |
| Swedish | 135 |
| French (except Basque) | 100 |
Language
| English Only | 3,114 |
|---|
| Spanish | 18 |
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| Population 5+ | 3,151 |
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Veterans
| Veterans | 113 |
|---|
| Population 18+ | 2,540 |
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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 Mariemont, Ohio.
