| Index | St. Johns | Michigan | National |
| Cost of living | 91 | 91 | 100 |
| Groceries | 97 | 98 | 100 |
| Health care | 99 | 97 | 100 |
| Housing | 75 | 76 | 100 |
| Transportation | 100 | 96 | 100 |
| Utilities | 97 | 100 | 100 |
| Lifestyle & Entertainment | 97 | 96 | 100 |
| Household Items | 96 | 98 | 100 |
| Education & Childcare | 97 | 95 | 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 | $113,557 | $9,463 | $2,649 | $3,407 |
| Renters | $55,684 | $4,640 | $1,299 | $1,671 |
| State | General Sales Tax | With Max Surtax |
| Michigan | 6% | 6% |
| State | Income Tax (Low) | Income Tax (High) |
| Michigan | 4.25% | 4.25% |
| City | Population | Cost of Living Index | National Avg. |
| Maple Rapids, MI | 701 | 80 | 19.9% |
| Ashley, MI | 515 | 82 | 17.7% |
| Ovid, MI | 1,606 | 83 | 16.9% |
| Carson City, MI | 1,080 | 83 | 16.6% |
| Perrinton, MI | 481 | 83 | 16.5% |
| St. Johns, MI | 8,087 | 91 | 9.2% |
| City | Population | Cost of Living Index | National Avg. |
| Flowery Branch, GA | 8,088 | 114 | 14.3% |
| Hitchcock, TX | 8,085 | 91 | 8.9% |
| Kenai, AK | 8,089 | 118 | 18.1% |
| Wytheville, VA | 8,084 | 96 | 3.8% |
| Ashland, WI | 8,090 | 89 | 10.6% |
| St. Johns, MI | 8,087 | 91 | 9.2% |