Jefferson County, Montana ZIP Codes
- ZIP records
6 - Cities represented
6 - Sum of listed ZIP population estimates
13,276
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 | 59634 | Clancy | 5,521 |
| 2 | 59759 | Whitehall | 3,631 |
| 3 | 59632 | Boulder | 2,557 |
| 4 | 59638 | Jefferson City | 769 |
| 5 | 59721 | Cardwell | 423 |
| 6 | 59631 | Basin | 375 |
Cities in Jefferson County
ZIP Directory
Browse all ZIP data for Montana
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.