Maxwell is a census-designated place and farm community in Colusa County, California. It lies at an elevation of 92 feet. Located off Interstate 5, it is home to Maxwell High School. The main crop grown is rice, though a variety of others such as grapes, almonds, olives, squash, and sunflowers are grown as well. Its ZIP code is 95955 and its area code is 530. Maxwell's population was 1,103 at the 2010 census.