Mason County, Washington ZIP Codes
- ZIP records
9 - Cities represented
9 - Sum of listed ZIP population estimates
66,064
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 | 98584 | Shelton | 40,606 |
| 2 | 98528 | Belfair | 11,940 |
| 3 | 98524 | Allyn | 4,300 |
| 4 | 98546 | Grapeview | 2,430 |
| 5 | 98548 | Hoodsport | 2,177 |
| 6 | 98588 | Tahuya | 2,114 |
| 7 | 98592 | Union | 2,059 |
| 8 | 98555 | Lilliwaup | 324 |
| 9 | 98560 | Matlock | 114 |
Cities in Mason 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.