ZIP Code 21404 is located in Annapolis Maryland. 21404 is entirely within Anne Arundel County. Regionally, 21404 is located in Metro Baltimore.
| ZIP Code Name | Annapolis |
| Primary County | Anne Arundel County |
| ZIP Code Type | PO Box |
| Current Time | EST |
| Coordinates | 38.97872925,-76.49307251 |
| Adjacent ZIP Codes | |
| Region | Metro Baltimore |
| Metropolitan/Micropolitan Stat Area | Baltimore-Columbia-Towson, MD |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |
| School Districts in 21404 | |
| Elementary Schools in 21404 | |
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| High Schools in 21404 |