Guasti, California
Guasti, California, in San Bernardino County, has ZIP code 91743 and area code 909, with 840 as an overlay.
- ZIP code
- 91743
- Area codes
- 909, 840
- County
- San Bernardino County
- State
- California
- Time zone
- Pacific Time
- Coordinates
- 34.0650, -117.5864
ZIP codes in Guasti
Area codes for Guasti
- Area code 909
In service since November 14, 1992. Shares its area with 840. Local calls are dialed with 1 plus ten digits.
- Area code 840
In service since February 23, 2021. Shares its area with 909. Local calls are dialed with 1 plus ten digits.
Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.
Time zone
Guasti is in the Pacific Time zone.
Towns near Guasti
- Ontario5 km (3.1 mi)
- Rancho Cucamonga7.7 km (4.8 mi)
- Upland9.3 km (5.8 mi)
- Mira Loma9.8 km (6.1 mi)
- Montclair10.4 km (6.5 mi)
- Eastvale11.3 km (7.0 mi)
- Chino11.5 km (7.1 mi)
- San Antonio Heights12.2 km (7.6 mi)
Local numbers in area code 909
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- (909) 858-9789Chino, CA$59View & buy
- (909) 858-9873Chino, CA$59View & buy
- (909) 870-5432Upland, CA$59View & buy
- (909) 898-7897Chino, CA$59View & buy
- (909) 898-8678Chino, CA$59View & buy
- (909) 898-8761Chino, CA$59View & buy
- (909) 898-8766Chino, CAAlso spells UPON$59View & buy
- (909) 898-8769Chino, CA$59View & buy
- (909) 978-7678Diamond Bar, CAAlso spells PORT, POST, SORT$59View & buy
- (909) 978-9877Diamond Bar, CA$59View & buy
- (909) 978-9878Diamond Bar, CA$59View & buy
- (909) 259-8777Ontario, CAAlso spells USPS$69View & buy
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