US location post office
ZIP Code 49431
- Zip Code: 49431
- Type: Standard
- Official USPS city name: Ludington
- Official USPS State Code: MI
- Official State Name: Michigan
- ZCTA: TRUE
- Population: 17274.0
- Density: 64.2
- Primary Official County Code: 26105
- Primary Official County Name: Mason
- Official County Name: Mason
- Official County Code: 26105
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Detroit (07:40 AM Sunday, June 22 2025-06-22 (GMT -0400))
- Geo Point: 43.98218, -86.40018
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