| Index | Jefferson City | Montana | National |
| Cost of living | 108 | 102 | 100 |
| Groceries | 102 | 103 | 100 |
| Health care | 101 | 102 | 100 |
| Housing | 122 | 101 | 100 |
| Transportation | 102 | 100 | 100 |
| Utilities | 102 | 104 | 100 |
| Lifestyle & Entertainment | 100 | 100 | 100 |
| Household Items | 101 | 100 | 100 |
| Education & Childcare | 103 | 102 | 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 | $90,422 | $7,535 | $2,110 | $2,713 |
| Renters | $173,608 | $14,467 | $4,051 | $5,209 |
| State | General Sales Tax | With Max Surtax |
| Montana | 0% | 0% |
| State | Income Tax (Low) | Income Tax (High) |
| Montana | 1% | 6.75% |
| City | Population | Cost of Living Index | National Avg. |
| Elkhorn, MT | 0 | 102 | 1.8% |
| Boulder, MT | 1,064 | 94 | 6.0% |
| East Helena, MT | 1,731 | 102 | 2.0% |
| Basin, MT | 277 | 108 | 8.3% |
| Helena, MT | 33,820 | 110 | 9.8% |
| Jefferson City, MT | 614 | 108 | 7.8% |
| City | Population | Cost of Living Index | National Avg. |
| Bodega, CA | 614 | 230 | 130.2% |
| Lake Mystic, FL | 614 | 102 | 2.1% |
| Funston, GA | 614 | 85 | 14.9% |
| Notus, ID | 614 | 90 | 9.5% |
| Denver, IN | 614 | 84 | 16.0% |
| Jefferson City, MT | 614 | 108 | 7.8% |