Port Arthur, Texas ZIP Codes
- ZIP records
2 - Sum of listed ZIP population estimates
55,525 - Counties represented
1 - Population range
17,167–38,358 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 | 77642 | Port Arthur | Jefferson | 38,358 |
| 2 | 77640 | Port Arthur | Jefferson | 17,167 |
Counties represented
All ZIP Codes in Port Arthur
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.