Imperial County is located in the Imperial Valley, in the far southeast corner of California, bordering both Arizona and Mexico. It is part of the El Centro, California Metropolitan Statistical Area which encompasses all of Imperial County. The county seat is the city of El Centro. Established in 1907, it is the newest-created of California's counties.

This region is a hot and dry desert region. The economy is heavily based on agriculture due to the availability of irrigation water, which is supplied wholly from the Colorado River via the All-American Canal.

Imperial County was formed in 1907 from the eastern portion of San Diego County. The county took its name from Imperial Valley, which was named from the Imperial Land Company; which at the turn of the 20th century had reclaimed the southern portion of the Colorado desert for agriculture.

NAF El Centro is the winter home of the U.S. Navy Flight Demonstration Squadron, The Blue Angels. Historically, the Blue Angels' kick off the season with their first air show in El Centro, traditionally held in March.

Anza-Borrego Desert State Park, portions of which are located in Imperial County, is the largest state park in California.

As of the census of 2000, there were 142,361 people, 39,384 households, and 31,467 families residing in the county.

County Website: http://www.co.imperial.ca.us
School District: http://www.co.imperial.ca.us