Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.
ZIP Codes in Carter County Address Data
Businesses Addresses: 631
PO Box Addresses: 1,752
Residential Addresses: 3,955
Multi-Family Addresses: 174
Single Family Addresses: 3,781
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Map of Carter County, MT ZIP Codes With Actual (Default) City Names