Postal reference / United States
49405Custer, Michigan
ZIP code 49405 is a United States postal code for Custer, Michigan. Its county association is Mason County. The map reference point is at 43.9324, -86.1777.
- State / territory
- Michigan
- Recorded place name
- Custer
- County association
- Mason
- Estimated coordinate
- 43.9324, -86.1777
View on OpenStreetMap - ZIP prefix
- 494 · 57 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 70.005 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
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Browse the other 1,158 ZIP codes recorded for Michigan, sorted by code with place and county.
Michigan directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 49458 | Walhalla | MI | Mason | 3.5 |
| 49454 | Scottville | MI | Mason | 5.3 |
| 49402 | Branch | MI | Lake | 7.1 |
| 49410 | Fountain | MI | Mason | 7.4 |
| 49459 | Walkerville | MI | Oceana | 12.6 |
| 49449 | Pentwater | MI | Oceana | 12.8 |
| 49411 | Free Soil | MI | Mason | 13.1 |
| 49431 | Ludington | MI | Mason | 13.3 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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