Franklin County, Washington ZIP Codes
- ZIP records
5 - Cities represented
5 - Sum of listed ZIP population estimates
98,034
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 | 99301 | Pasco | 87,044 |
| 2 | 99326 | Connell | 6,336 |
| 3 | 99343 | Mesa | 3,215 |
| 4 | 99330 | Eltopia | 1,210 |
| 5 | 99335 | Kahlotus | 229 |
Cities in Franklin County
ZIP Directory
Browse all ZIP data for Washington
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.