Iron County, Michigan ZIP codes
7 ZIP codes are in Iron County, plus 2 that cross in from neighboring counties.
- ZIP codes
- 7
- Population in these ZIPs
- 11,610
- Avg. median income
- $57,600population-weighted
- Cities & towns
- 7
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ZIP codes in Iron County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 49902 | Alpha | 215 | $39,115 | $34,100 |
| 49903 | Amasa | 233 | $41,818 | $85,600 |
| 49915 | Caspian | 570 | $35,000 | $74,100 |
| 49920 | Crystal Falls | 4,380 | $63,605 | $173,700 |
| 49927 | Gaastra | 371 | $47,500 | $104,900 |
| 49935 | Iron River | 5,841 | $57,236 | $154,500 |
| 49964 PO Box | Stambaugh | — | — | — |
ZIP codes partly in Iron County
These ZIP codes are mostly in a neighboring county but cover part of Iron County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 49879 | Republic | Marquette County | 1,057 | $49,471 | $186,800 |
| 49967 | Trout Creek | Houghton County | 383 | $43,750 | $150,900 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Iron County
Nearby counties
Frequently asked questions
How many ZIP codes are in Iron County, Michigan?
7 ZIP codes are mainly in Iron County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Iron County?
ZIP codes in Iron County use the city names Alpha, Amasa, Caspian, Crystal Falls, Gaastra, Iron River and Stambaugh.