| Index | Cardiff | Alabama | National |
| Income per capita | $25,237 | $36,385 | $44,883 |
| Median household income | $0 | $66,002 | $81,333 |
| Median income owner occupied | $139,772 | $82,217 | $106,172 |
| Median income renter occupied | $38,363 | $38,646 | $52,080 |
| Median earnings male | $63,583 | $49,826 | $54,343 |
| Median earnings female | $0 | $33,733 | $38,439 |
| Unemployment rate | 0.0% | 5.0% | 4.9% |
| 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 | 20,597 | $226,680 | 178.7% |
| Edgewater, AL | 852 | $184,443 | 126.8% |
| Vestavia Hills, AL | 35,269 | $164,342 | 102.1% |
| Kimberly, AL | 3,646 | $140,146 | 72.3% |
| Homewood, AL | 25,716 | $127,411 | 56.7% |
| Cardiff, AL | 48 | $0 | 100.0% |
| City | Population | Household Income | National Avg. |
| Tolsona, AK | 48 | $0 | 100.0% |
| Garey, CA | 48 | $0 | 100.0% |
| New Pine Creek, CA | 48 | $0 | 100.0% |
| Frytown, IA | 48 | $0 | 100.0% |
| Morley, IA | 48 | $51,722 | 36.4% |
| Cardiff, AL | 48 | $0 | 100.0% |