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 Montgomery County Address Data
Businesses Addresses: 32,828
PO Box Addresses: 10,288
Residential Addresses: 456,212
Multi-Family Addresses: 141,842
Single Family Addresses: 307,797
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Map of Montgomery County, MD ZIP Codes With Actual (Default) City Names
