Alta is a city in Buena Vista County, Iowa, United States. The population was 1,865 at the 2000 census.
Alta is located at 42°40′19″N 95°18′17″W / 42.67194°N 95.30472°W / 42.67194; -95.30472 (42.672030, -95.304757). It is located 6 miles from the city of Storm Lake. It is around 7 miles from Aurelia, and is located on Highway 7.
According to the United States Census Bureau, the city has a total area of 1.0 square miles (2.7 km²), all of it land.