| Index | Foster | Oklahoma | National |
| Cost of living | 98 | 88 | 100 |
| Groceries | 98 | 96 | 100 |
| Health care | 93 | 95 | 100 |
| Housing | 103 | 70 | 100 |
| Transportation | 98 | 96 | 100 |
| Utilities | 94 | 96 | 100 |
| Lifestyle & Entertainment | 98 | 94 | 100 |
| Household Items | 98 | 97 | 100 |
| Education & Childcare | 88 | 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 | $92,271 | $7,689 | $2,153 | $2,768 |
| Renters | $105,848 | $8,821 | $2,470 | $3,176 |
| State | General Sales Tax | With Max Surtax |
| Oklahoma | 4.5% | 11% |
| State | Income Tax (Low) | Income Tax (High) |
| Oklahoma | 0.25% | 4.75% |
| City | Population | Cost of Living Index | National Avg. |
| Erin Springs, OK | 119 | 78 | 21.5% |
| Tatums, OK | 173 | 80 | 20.0% |
| Elmore City, OK | 958 | 82 | 18.2% |
| Pauls Valley, OK | 6,317 | 82 | 17.7% |
| Velma, OK | 664 | 83 | 17.2% |
| Foster, OK | 318 | 98 | 2.1% |
| City | Population | Cost of Living Index | National Avg. |
| Dillon Beach, CA | 318 | 264 | 163.9% |
| Coal Creek town, CO | 318 | 105 | 5.4% |
| Romeo, CO | 318 | 85 | 14.6% |
| Bostwick, GA | 318 | 101 | 1.3% |
| Twin Lakes, IA | 318 | 138 | 37.8% |
| Foster, OK | 318 | 98 | 2.1% |