ZIP Code 18991 is located in Warminster Pennsylvania. 18991 is entirely within Bucks County. Regionally, 18991 is located in Metro Philadelphia.
| ZIP Code Name | Warminster |
| Primary County | Bucks County |
| ZIP Code Type | Unique |
| Current Time | EDT |
| Coordinates | 40.19145966,-75.09291840 |
| Adjacent ZIP Codes | |
| Region | Metro Philadelphia |
| Metropolitan/Micropolitan Stat Area | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| School Districts in 18991 | |
| Elementary Schools in 18991 | |
| Middle Schools in 18991 | |
| High Schools in 18991 |