ZIP codes in Columbia, Maryland
Columbia has 3 ZIP codes in this directory. Each ZIP is listed with its county, population and time zone.
| ZIP | County | Population | Time zone |
|---|---|---|---|
| 21044 | Howard | 99,615 | America/New_York |
| 21045 | Howard | 99,615 | America/New_York |
| 21046 | Howard | 99,615 | America/New_York |
About Columbia ZIP codes
ZIP codes in Columbia are part of the USPS delivery network for Maryland. The codes above are ordered numerically; each links to a page with coordinates, nearby ZIPs and more detail. Population shown is the estimated population of the city: 99,615.