Marion, Iowa ZIP Codes
- ZIP records
1 - Sum of listed ZIP population estimates
42,706 - Counties represented
1 - Population range
42,706–42,706 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 | 52302 | Marion | Linn | 42,706 |
Counties represented
All ZIP Codes in Marion
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.