ZIP Code 21088 is located in Lineboro Maryland. 21088 is entirely within Carroll County. Regionally, it is located in Metro Baltimore.
| ZIP Code Name | Lineboro |
| Primary County | Carroll County |
| ZIP Code Type | PO Box |
| Current Time | EDT |
| Coordinates | 39.66019821,-76.88732910 |
| Adjacent ZIP Codes | |
| Region | Metro Baltimore |
| Metropolitan/Micropolitan Stat Area | Baltimore-Columbia-Towson, MD |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |