| Index | Killen | Alabama | National |
| Cost of living | 89 | 89 | 100 |
| Groceries | 95 | 96 | 100 |
| Health care | 97 | 95 | 100 |
| Housing | 76 | 74 | 100 |
| Transportation | 98 | 95 | 100 |
| Utilities | 96 | 97 | 100 |
| Lifestyle & Entertainment | 94 | 94 | 100 |
| Household Items | 95 | 96 | 100 |
| Education & Childcare | 91 | 93 | 100 |

| Cost of living index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index | |
| Lifestyle index | |
| Household index | |
| Educare index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $77,644 | $6,470 | $1,812 | $2,330 |
| Renters | $75,117 | $6,260 | $1,753 | $2,254 |
| State | General Sales Tax | With Max Surtax |
| Alabama | 4% | 13.5% |
| State | Income Tax (Low) | Income Tax (High) |
| Alabama | 2% | 5% |
| City | Population | Cost of Living Index | National Avg. |
| Iron City, TN | 97 | 72 | 28.0% |
| North Courtland, AL | 799 | 78 | 21.6% |
| Leighton, AL | 806 | 79 | 20.6% |
| Courtland, AL | 924 | 80 | 20.1% |
| St. Joseph, TN | 923 | 81 | 18.6% |
| Killen, AL | 1,175 | 89 | 10.6% |
| City | Population | Cost of Living Index | National Avg. |
| Wickes, AR | 1,175 | 84 | 15.9% |
| Halsey, OR | 1,175 | 110 | 10.1% |
| Curtisville, PA | 1,175 | 89 | 10.6% |
| East Bank, WV | 1,175 | 83 | 16.6% |
| Dunnavant, AL | 1,174 | 96 | 3.9% |
| Killen, AL | 1,175 | 89 | 10.6% |