Post Offices List in Baldwin Park City, California:
| Baldwin Park Post Office | 4230 Maine Ave, Baldwin Park, CA 91706 |
| Irwindale Post Office | 16025 Calle Del Norte, Baldwin Park, CA 91706 |
| Baldwin Park Post Office | 4230 Maine Ave, Baldwin Park, CA 91706 |
| Irwindale Post Office | 16025 Calle Del Norte, Baldwin Park, CA 91706 |