Ontario sits in the western Inland Empire, in San Bernardino County, about 38 miles east of downtown Los Angeles. Founded in the 1880s by George and William Chaffey and named for Ontario, Canada, the city took shape as an agricultural colony whose engineered irrigation and temperate climate made it a leading producer of citrus — particularly oranges and lemons — by the early 20th century. Vineyards and dairies also contributed to the early economy. That agricultural foundation eventually gave way to industry, logistics, and retail, transforming Ontario into one of the region's major economic centers. The city's location at the intersection of Interstates 10 and 15, plus State Route 60, positions it at a key freight and travel crossroads. Ontario International Airport serves as a significant passenger and air-cargo gateway for the Inland Empire, while a network of rail lines and distribution facilities supports a large logistics economy. Ontario Mills, one of Southern California's largest outlet shopping centers, and Toyota Arena anchor the retail and entertainment side of that economy, drawing visitors from across the region. Ontario's population of roughly 190,000 makes it one of the larger cities in San Bernardino County, with a diverse community and a mix of long-established neighborhoods and newer master-planned development. Historic districts near downtown retain early Craftsman, Victorian, and Mission Revival homes along tree-lined streets, while communities such as Ontario Ranch on the city's edges deliver contemporary single-family housing. Public education is divided between the Ontario-Montclair School District for younger students and the Chaffey Joint Union High School District for high school. This blend of deep agricultural history, industrial vitality, and residential growth gives Ontario a working, family-oriented character that distinguishes it from coastal Southern California communities. Its position at the foot of the San Gabriel Mountains adds scenic context and outdoor access, while its freeway and rail connections keep the entire region within reach.