100 Smallest ZIP Codes in the United States by Population in Highland County, Ohio
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Highland County, Ohio.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 45132 | HIGHLAND | OH | 116 |
| 2 | 45172 | SINKING SPRING | OH | 264 |
| 3 | 45155 | MOWRYSTOWN | OH | 461 |
| 4 | 45142 | LYNCHBURG | OH | 3,994 |
| 5 | 45135 | LEESBURG | OH | 5,581 |
| 6 | 45123 | GREENFIELD | OH | 8,958 |
| 7 | 45133 | HILLSBORO | OH | 23,399 |