Dupo, Illinois ZIP Codes
- ZIP records
1 - Sum of listed ZIP population estimates
4,232 - Counties represented
1 - Population range
4,232–4,232 per ZIP
Population sum includes positive estimates in these ZIP records; it is not an official city population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | County | Population estimate |
|---|---|---|---|---|
| 1 | 62239 | Dupo | St. Clair | 4,232 |
Counties represented
All ZIP Codes in Dupo
Browse all ZIP data for Illinois
Methodology: ZIP records are grouped by the source file's primary city and state fields. Population ranges and sums use positive ZIP-level estimates; sums should not be read as official city totals. County links use each record's listed county assignment.