Calipatria (portmanteau of California and Patria, Spanish for "homeland") is a city in Imperial County, California. Calipatria is located 23 miles (37 km) north of El Centro. It is part of the El Centro Metropolitan Area. The population was 6,515 at the 2020 census, down from 7,710 at the 2010 census, up from 7,289 at the 2000 census, including 4000 inmates at Calipatria State Prison. The community is located along State Route 111.

Calipatria is located at 33°07′32″N 115°30′51″W / 33.12556°N 115.51417°W / 33.12556; -115.51417.

At an elevation of 180 feet (55 m) below sea level, Calipatria is the lowest incorporated city in the Western Hemisphere. The city currently claims to have the "tallest flagpole (184 feet) where the flag flies at sea level" at 184 feet (56 m), so their American flag will always fly above sea level.

According to the United States Census Bureau, the city has a total area of 3.7 square miles (9.6 km²), all land.

This area has a large amount of sunshine year round due to its stable descending air and high pressure. According to the Köppen Climate Classification system, Calipatria has a hot desert climate, abbreviated "Bwh" on climate maps.

The Imperial Valley Farm Lands Association founded the town as Date City in 1914. The first post office at Calipatria opened in 1914. Calipatria incorporated in 1919.

As of the 2020 census, Calipatria had a population of 6,515 and a population density of 1,761.3 inhabitants per square mile (680.0/km²). The median age was 32.0 years. The age distribution was 18.7% under the age of 18, 10.2% aged 18 to 24, 46.8% aged 25 to 44, 18.0% aged 45 to 64, and 6.2% who were 65 years of age or older. For every 100 females, there were 250.1 males, and for every 100 females age 18 and over, there were 319.8 males age 18 and over.

The census reported that 55.4% of the population lived in households and 44.6% were institutionalized. 0.0% of residents lived in urban areas, while 100.0% lived in rural areas.