New Castle, Delaware ZIP Codes
- ZIP records
1 - Sum of listed ZIP population estimates
62,392 - Counties represented
1 - Population range
62,392–62,392 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 | 19720 | New Castle | New Castle | 62,392 |
Counties represented
All ZIP Codes in New Castle
Browse all ZIP data for Delaware
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.