| Index | Castalia | Ohio | National |
| Income per capita | $32,407 | $41,785 | $44,883 |
| Median household income | $91,092 | $75,222 | $81,333 |
| Median income owner occupied | $117,064 | $98,843 | $106,172 |
| Median income renter occupied | $56,679 | $43,469 | $52,080 |
| Median earnings male | $53,215 | $53,201 | $54,343 |
| Median earnings female | $31,392 | $36,192 | $38,439 |
| Unemployment rate | 4.1% | 4.8% | 4.9% |
| Poverty level | 24.2% | 15.4% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 7.9% | 7.9% |
| Manufacturing sector | 32.1% | 32.1% |
| Financial & insurance services | 0.7% | 0.7% |
| Wholesale & retail services | 9.3% | 9.3% |
| Public administration | 2.3% | 2.3% |
| Transportation, warehousing & utilities | 7.9% | 7.9% |
| Education, health & social services | 3.3% | 3.3% |
| Other | 36.4% | 36.4% |
| City | Population | Household Income | National Avg. |
| Marblehead, OH | 879 | $121,894 | 49.9% |
| Milan, OH | 1,596 | $115,417 | 41.9% |
| Kelleys Island, OH | 289 | $101,731 | 25.1% |
| Bay View, OH | 859 | $100,322 | 23.3% |
| Green Springs, OH | 1,466 | $96,668 | 18.9% |
| Castalia, OH | 1,186 | $91,092 | 12.0% |
| City | Population | Household Income | National Avg. |
| New Pekin, IN | 1,186 | $59,614 | 26.7% |
| Atwood, KS | 1,186 | $96,499 | 18.6% |
| Mound City, MO | 1,186 | $75,432 | 7.3% |
| East Marion, NY | 1,186 | $127,597 | 56.9% |
| Bradner, OH | 1,186 | $76,449 | 6.0% |
| Castalia, OH | 1,186 | $91,092 | 12.0% |