City · Maryland · United States

Columbia, MD — ZIP codes

3 ZIP codes · Howard County

City: Columbia
County: Howard
State: Maryland
Country: United States
Postal codes: 210442104521046
Single source
Coordinates: 39.2141, -76.8788 View on OpenStreetMap

ZIP codes (3)

Postal code	Place name	Verification
21044	Columbia	Single source
21045	Columbia	Single source
21046	Columbia	Single source

Sources and verification

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Last generated : 2026-08-21. Report an error.