South Sioux City, Nebraska ZIP Codes
- ZIP records
1 - Sum of listed ZIP population estimates
15,373 - Counties represented
1 - Population range
15,373–15,373 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 | 68776 | South Sioux City | Dakota | 15,373 |
Counties represented
All ZIP Codes in South Sioux City
Browse all ZIP data for Nebraska
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.