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| City | Guasti |
| State | California (CA) |
| County | San Bernardino |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 34.065011 |
| Longitude | -117.586441 |
| Population | 480 |
| Density | 18.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 91761, 91743 |
| Area Code | 818, 747 |
| County Seat | San Bernardino |
Guasti is a locality in San Bernardino County, California, United States. It is a small community with a population of 480. The population density is 18.0 people per km². Guasti is located at 34.0650°N, 117.5864°W. It observes the Pacific Time (America/Los_Angeles) timezone. ZIP code: 91761.
Guasti rests in a broad, sun-drenched basin, where the San Bernardino Valley begins its gentle, almost imperceptible rise towards the distant mountains. It lies 2.9 miles south of Rancho Cucamonga, CA (from Rancho Cucamonga, CA: bearing 172°T), and is situated 8.9 miles west-south-west of Fontana. The land here is a study in ochre and pale green, the earth a rich, baked clay that cracks with the dry heat of summer, yielding to sparse, resilient scrub and the determined sprawl of agricultural fields. The air, especially as evening descends, carries a faint, dry whisper of dust and something more elemental, a mineral tang from the arid soil. Even the shadows, cast long and sharp by the low sun, seem to hold a certain stillness, a patient waiting for the cooler, star-flecked darkness. The history of Guasti is inextricably linked to the fertile, if demanding, soil it occupies, a legacy born from the vision of its early settlers who saw potential in this arid expanse. For generations, the economy of Guasti has been shaped by agriculture, particularly the cultivation of grapes and citrus, their vibrant produce once a significant contributor to the region's bounty, their scent a sweet counterpoint to the dry air. Though the landscape has seen its share of change, with some fields giving way to development, the echoes of its agricultural past remain, a reminder of the hard work and dedication that defined Guasti. The local character is one of pragmatic resilience, a quiet understanding of the land's rhythms and the enduring spirit of those who have made their lives here.
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This page provides an embedded street and satellite map of Guasti, California — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 34.065011, -117.586441. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Guasti and San Bernardino County.
Detailed location data for Guasti includes the ZIP code (91761), telephone area code (818, 747), county seat of San Bernardino County (San Bernardino), and school district assignment. These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Guasti is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |