100 Smallest ZIP Codes in the United States by Population in Washington 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 Washington County, Ohio.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 45721 | COAL RUN | OH | 23 |
| 2 | 45789 | WINGETT RUN | OH | 146 |
| 3 | 45746 | MACKSBURG | OH | 373 |
| 4 | 45773 | RENO | OH | 533 |
| 5 | 45788 | WHIPPLE | OH | 975 |
| 6 | 45745 | LOWER SALEM | OH | 1,049 |
| 7 | 45768 | NEWPORT | OH | 1,567 |
| 8 | 45729 | FLEMING | OH | 2,111 |
| 9 | 45724 | CUTLER | OH | 2,190 |
| 10 | 45715 | BEVERLY | OH | 2,197 |
| 11 | 45744 | LOWELL | OH | 2,234 |
| 12 | 45767 | NEW MATAMORAS | OH | 2,598 |
| 13 | 45786 | WATERFORD | OH | 2,854 |
| 14 | 45784 | VINCENT | OH | 3,250 |
| 15 | 45742 | LITTLE HOCKING | OH | 3,335 |
| 16 | 45714 | BELPRE | OH | 9,167 |
| 17 | 45750 | MARIETTA | OH | 26,250 |