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San Bernardino
San Bernardino County Community Info
San Bernardino County, a vast and diverse region in Southern California, is renowned for its expansive landscapes and varied attractions. As of the 2020 census, the county's population stands at approximately 2,237,301. It is the largest county in the United States by area and the fifth-most populous county in California. Known for its wide-open spaces and natural beauty, San Bernardino County offers a distinct contrast to the more urbanized areas of Southern California.
The county is home to several prominent cities, including San Bernardino, Ontario, and Rancho Cucamonga. San Bernardino, the county seat, serves as a central hub for government and regional services. Ontario is a major economic center with its large airport and shopping districts, while Rancho Cucamonga is celebrated for its well-planned communities and growing commercial sector.
San Bernardino County’s geographical diversity includes breathtaking mountain ranges, such as the San Bernardino Mountains, and expansive desert areas like the Mojave Desert. The county is also home to notable landmarks and recreational areas, including the Joshua Tree National Park, the Big Bear Lake resort area, and the historic Route 66. These attractions offer a range of outdoor activities from hiking and skiing to exploring scenic vistas and enjoying peaceful retreats.
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Education is a key feature of San Bernardino County, with several notable institutions such as California State University, San Bernardino (CSUSB), and the University of Redlands. The county also provides a robust network of public and private schools, contributing to its appeal for families seeking quality education.
Overall, San Bernardino County is characterized by its diverse environments, from bustling city centers to serene natural landscapes. Its combination of outdoor adventure opportunities, rich cultural history, and educational resources makes it a compelling destination for residents and visitors alike. The county’s expansive size and varied offerings highlight its significant role within the Southern California region.
San Bernardino Cities
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Adelanto
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Apple Valley
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Barstow
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Big Bear Lake
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Chino
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Chino Hills
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Colton
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Crestline
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Fontana
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Grand Terrace
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Hesperia
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Highland
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Joshua Tree​
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Loma Linda
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Montclair
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Needles
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Ontario
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Rancho Cucamonga
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Redlands
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Rialto
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San Bernardino
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Twentynine Palms
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Upland
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Yucaipa
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Yermo
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Geography & Climate
According to the U.S. Census Bureau, San Bernardino County covers an extensive area of approximately 20,105 square miles (51,917 km²). Of this, around 20,058 square miles (51,885 km²) is land, and about 47 square miles (122 km²) is water, comprising roughly 0.2% of the county’s total area. This makes San Bernardino County the largest county in the United States by area, far exceeding the size of its neighboring counties in Southern California.
The county’s vast size contributes to its diverse climate, which varies significantly across different regions. Average annual temperatures typically range from 40 °F (4 °C) in the higher elevations to 80 °F (27 °C) in the lower desert areas. San Bernardino County experiences a broad spectrum of weather conditions, from snowy winters in the mountains to hot, arid conditions in the desert regions.
San Bernardino County is bordered by Los Angeles County to the west, Riverside County to the south, and Mohave County in Arizona to the east. To the north, it meets Inyo County and the eastern edge of the Sierra Nevada mountain range. This strategic location places it at the crossroads of several significant geographic features, contributing to its varied climate and landscapes.
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