List of ZIP Codes in Northwest Township, Missouri | |||||||
|---|---|---|---|---|---|---|---|
| ZIP Code | ZIP Code City Name | Population | ZIP Code Type | ||||
| Florissant | 48212 | Non-Unique | ||||
| Hazelwood | 19602 | Non-Unique | ||||
| Maryland Heights | 22367 | Non-Unique | ||||
| Bridgeton | 10568 | Non-Unique | ||||
| Earth City | 3 | Non-Unique | ||||
| Saint Louis | 29262 | Non-Unique | ||||
| Saint Charles | 48514 | Non-Unique | ||||