ZIP Code 20830 is located in Olney Maryland. 20830 is entirely within Montgomery County. Regionally, 20830 is located in Metro DC.
| ZIP Code Name | Olney |
| Primary County | Montgomery County |
| ZIP Code Type | PO Box |
| Current Time | EST |
| Coordinates | 39.15568542,-77.07085419 |
| Adjacent ZIP Codes | |
| Region | Metro DC |
| Metropolitan/Micropolitan Stat Area | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |
| School Districts in 20830 | |
| Elementary Schools in 20830 | |
| Middle Schools in 20830 | |
| High Schools in 20830 |