| Index | Killen | Alabama | National |
| Cost of living | 86 | 88 | 100 |
| Goods & Services | 90 | 96 | 100 |
| Groceries | 94 | 96 | 100 |
| Health care | 83 | 87 | 100 |
| Housing | 73 | 72 | 100 |
| Transportation | 90 | 91 | 100 |
| Utilities | 95 | 102 | 100 |


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| Cost of living index | |
| Goods & Services index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $52,813 | $4,401 | $1,232 | $1,585 |
| Renters | $51,354 | $4,280 | $1,198 | $1,541 |
| State | General Sales Tax | With Max Surtax |
| Alabama | 4% | 13.5% |
| State | Income Tax (Low) | Income Tax (High) |
| Alabama | 2% | 5% |
| Item | Killen | National avg. | Difference |
| Haircut | $17.13 | $24.26 | 29.4% |
| Beauty Salon | $32.58 | $45.56 | 28.5% |
| Toothpaste | $3.74 | $3.70 | 0.9% |
| Shampoo | $1.04 | $1.28 | 19.0% |
| Movie | $13.50 | $12.13 | 11.2% |
| Bowling | $17.50 | $18.00 | 2.8% |
| Item | Killen | National avg. | Difference |
| Ground Beef | $5.67 | $5.84 | 2.9% |
| Fried Chicken | $1.67 | $1.57 | 6.2% |
| Milk | $4.49 | $4.67 | 4.0% |
| Potatoes | $5.06 | $4.93 | 2.5% |
| Pizza | $9.73 | $12.09 | 19.5% |
| Beer | $10.23 | $10.41 | 1.7% |
| Item | Killen | National avg. | Difference |
| Optometrist | $80.87 | $125.68 | 35.7% |
| Doctor | $90.50 | $135.78 | 33.3% |
| Dentist | $94.28 | $113.29 | 16.8% |
| Ibuprofen | $10.04 | $10.65 | 5.8% |
| Lipitor | $519.93 | $468.60 | 11.0% |
| Item | Killen | National avg. | Difference |
| Home Price | $130,100.00 | $184,700.00 | 29.6% |
| Avg. Mortgage Payment | $1,703.27 | $2,346.69 | 27.4% |
| Apartment Rent | $760.00 | $949.00 | 19.9% |
| Item | Killen | National avg. | Difference |
| Gasoline | $3.14 | $3.46 | 9.4% |
| Tire Balancing | $52.00 | $59.92 | 13.2% |
| Item | Killen | National avg. | Difference |
| All Electricity | $180.93 | $193.99 | 6.7% |
| Phone | $186.22 | $192.25 | 3.1% |
| City | Population | Cost of Living Index | National Avg. |
| Iron City, TN | 94 | 69 | 31.1% |
| North Courtland, AL | 783 | 78 | 22.2% |
| Leighton, AL | 789 | 76 | 23.8% |
| Courtland, AL | 896 | 79 | 20.7% |
| St. Joseph, TN | 904 | 78 | 21.7% |
| Killen, AL | 1,146 | 86 | 14.3% |
| City | Population | Cost of Living Index | National Avg. |
| Squirrel Mountain Valley, CA | 1,146 | 123 | 22.7% |
| Woodland Heights, PA | 1,146 | 89 | 10.6% |
| Granger, TX | 1,146 | 86 | 14.4% |
| Saint-Zénon, QC | 1,146 | n/a | |
| King Cove, AK | 1,147 | 103 | 2.7% |
| Killen, AL | 1,146 | 86 | 14.3% |