| Index | Mercersburg | Pennsylvania | National |
| Median home price | $319,669 | $296,372 | $326,622 |
| Median rent asked | $1,197 | $1,283 | $1,444 |
| Avg. people per household | 2.1 | 2.4 | 2.6 |
| Owner occupied households | 53.6% | 69.0% | 63.6% |
| Renter occupied households | 46.4% | 31.0% | 36.4% |

| Population | Home Price | National Avg. | |
| Big Spring, MD | 51 | $0 | 100% |
| Cearfoss, MD | 120 | $0 | 100% |
| Reid, MD | 0 | $0 | 100% |
| Indian Springs, MD | 18 | $0 | 100% |
| Ernstville, MD | 26 | $0 | 100% |
| Mercersburg, PA | 1,737 | $319,669 | 2% |
| Population | Home Price | National Avg. | |
| Navarre, OH | 1,737 | $176,213 | 46% |
| Woodbranch, TX | 1,737 | $324,124 | 1% |
| Hancock, MD | 1,737 | $241,146 | 26% |
| Reinbeck, IA | 1,737 | $219,445 | 33% |
| East Millinocket, ME | 1,737 | $111,893 | 66% |
| Mercersburg, PA | 1,737 | $319,669 | 2% |