| Index | Cardiff | Alabama | National |
| Income per capita | $17,035 | $24,736 | $29,829 |
| Median household income | $0 | $44,758 | $55,322 |
| Median income owner occupied | $93,750 | $55,873 | $70,586 |
| Median income renter occupied | $25,417 | $25,999 | $35,192 |
| Median earnings male | $43,750 | $34,323 | $36,919 |
| Median earnings female | $0 | $22,614 | $26,250 |
| Unemployment rate | 0.0% | 4.8% | 4.7% |
| Poverty level | 47.8% | 18.4% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 0.0% | 0.0% |
| Manufacturing sector | 33.3% | 33.3% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 41.7% | 41.7% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 8.3% | 8.3% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 0.0% | 0.0% |
| City | Population | Household Income | National Avg. |
| Mountain Brook, AL | 20,178 | $152,646 | 175.9% |
| Edgewater, AL | 832 | $122,984 | 122.3% |
| Vestavia Hills, AL | 34,482 | $110,478 | 99.7% |
| Kimberly, AL | 3,551 | $93,772 | 69.5% |
| Homewood, AL | 25,170 | $84,418 | 52.6% |
| Cardiff, AL | 46 | $0 | 100.0% |
| City | Population | Household Income | National Avg. |
| Tolsona, AK | 46 | $0 | 100.0% |
| Soda Springs, CA | 46 | $0 | 100.0% |
| Morley, IA | 46 | $34,375 | 37.9% |
| Redding, IA | 46 | $0 | 100.0% |
| Swan, IA | 46 | $0 | 100.0% |
| Cardiff, AL | 46 | $0 | 100.0% |
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