| Index | Mercersburg | Pennsylvania | National |
| Median home price | $182,100 | $167,700 | $184,700 |
| Median rent asked | $787 | $859 | $949 |
| 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 | 50 | $0 | 100% |
| Cearfoss, MD | 115 | $0 | 100% |
| Reid, MD | 0 | $0 | 100% |
| Indian Springs, MD | 18 | $0 | 100% |
| Ernstville, MD | 25 | $0 | 100% |
| Mercersburg, PA | 1,673 | $182,100 | 1% |
| Population | Home Price | National Avg. | |
| Plainville, KS | 1,673 | $95,200 | 48% |
| Evart, MI | 1,673 | $78,900 | 57% |
| Holliday, TX | 1,673 | $96,900 | 48% |
| Cheswold, DE | 1,673 | $160,700 | 13% |
| Chepachet, RI | 1,673 | $262,500 | 42% |
| Mercersburg, PA | 1,673 | $182,100 | 1% |
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