Grundy County, Illinois ZIP Codes
- ZIP records
8 - Cities represented
8 - Sum of listed ZIP population estimates
37,650
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 | 60450 | Morris | 20,783 |
| 2 | 60416 | Coal City | 9,550 |
| 3 | 60424 | Gardner | 2,153 |
| 4 | 60444 | Mazon | 1,901 |
| 5 | 60407 | Braceville | 1,812 |
| 6 | 60479 | Verona | 671 |
| 7 | 60474 | South Wilmington | 663 |
| 8 | 60437 | Kinsman | 117 |
Cities in Grundy 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.