Washington County, Illinois ZIP Codes
- ZIP records
10 - Cities represented
10 - Sum of listed ZIP population estimates
12,898
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 62263 | Nashville | 4,819 |
| 2 | 62271 | Okawville | 1,873 |
| 3 | 62808 | Ashley | 1,602 |
| 4 | 62803 | Hoyleton | 1,132 |
| 5 | 62214 | Addieville | 1,048 |
| 6 | 62268 | Oakdale | 764 |
| 7 | 62848 | Irvington | 738 |
| 8 | 62877 | Richview | 437 |
| 9 | 62831 | Du Bois | 339 |
| 10 | 62876 | Radom | 146 |
Cities in Washington County
ZIP Directory
Browse all ZIP data for Illinois
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.