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is an unincorporated community in southern San Diego County, California, nestled between the cities of Chula Vista, National City, and San Diego. It is also a census-designated place defined by the U.S. Census Bureau.
According to the United States Census Bureau, Bonita has a total area of 13.2 km² (5.1 mi²). 12.7 km² (4.9 mi²) of it is land and 0.5 km² (0.2 mi²) of it (3.54%) is water.
While Bonita is politically designated as an unincorporated community, bounded by the incorporated cities of Chula Vista, San Diego and National City, it is closely associated with the geography of the Lower Sweetwater Valley. Thus considered, Bonita occupies about a five mile (8 km) stretch of the Sweetwater River, its valley, and surrounding hills on either side, bounded upstream (east) by the Sweetwater Reservoir, and downstream (west) effectively by Interstate 805. The community crosses west of I-805 -- an area less than 160 acres (0.6 km²) -- reaching as far south and west as East H Street and Hilltop Drive. Its northern boundary is State Route 54 and its southern extent reaches approximately one mile (2 km) south of the river.
Large portions of modern Bonita consist of housing tracts built throughout the 1960s, 1970s, and 1980s, including:
The Bonita area is populated by coyote, racoon, fox, rabbits, squirrels, opossum, and skunk, among other wildlife.