| Index | Mercersburg | Pennsylvania | National |
| Cost of living | 103 | 97 | 100 |
| Groceries | 106 | 100 | 100 |
| Health care | 106 | 99 | 100 |
| Housing | 93 | 90 | 100 |
| Transportation | 109 | 101 | 100 |
| Utilities | 104 | 99 | 100 |
| Lifestyle & Entertainment | 110 | 100 | 100 |
| Household Items | 105 | 99 | 100 |
| Education & Childcare | 109 | 101 | 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 | $112,942 | $9,412 | $2,635 | $3,389 |
| Renters | $49,594 | $4,133 | $1,157 | $1,488 |
| State | General Sales Tax | With Max Surtax |
| Pennsylvania | 6% | 8% |
| State | Income Tax (Low) | Income Tax (High) |
| Pennsylvania | 3.07% | 3.07% |
| City | Population | Cost of Living Index | National Avg. |
| Big Spring, MD | 51 | 107 | 6.9% |
| Kemps Mill, MD | 0 | 107 | 6.9% |
| Cearfoss, MD | 120 | 107 | 6.9% |
| Indian Springs, MD | 18 | 107 | 6.9% |
| Ernstville, MD | 26 | 107 | 6.9% |
| Mercersburg, PA | 1,737 | 103 | 2.8% |
| City | Population | Cost of Living Index | National Avg. |
| Reinbeck, IA | 1,737 | 87 | 12.6% |
| Hancock, MD | 1,737 | 98 | 1.9% |
| East Millinocket, ME | 1,737 | 86 | 14.3% |
| Navarre, OH | 1,737 | 85 | 15.4% |
| Woodbranch, TX | 1,737 | 101 | 1.1% |
| Mercersburg, PA | 1,737 | 103 | 2.8% |