ZIP Code 91743 is located in Guasti California. 91743 is entirely within San Bernardino County. Regionally, it is located in Metro Los Angeles.
| ZIP Code Name | Guasti |
| Primary County | San Bernardino County |
| ZIP Code Type | PO Box |
| Current Time | PDT |
| Coordinates | 34.06367874,-117.58796692 |
| Adjacent ZIP Codes | |
| Region | Metro Los Angeles |
| Metropolitan/Micropolitan Stat Area | Riverside-San Bernardino-Ontario, CA |
| Time Zone | Pacific Daylight Time |
| IANA Timezone | America/Los_Angeles |
| Area | 0.00744276 Square Miles |