Lost Hills is located 42 miles (68 km) west-northwest of Bakersfield,[4] at an elevation of 305 feet (93 m).

A rest stop by Interstate 5 including restaurants, gasoline stations, and motels is located about one-mile (1.6 km) from the town.

The town is at the intersection of State Route 46 and Lost Hills Road.

The enormous Lost Hills Oil Field, which is sixth largest by remaining reserves in California, is west and northwest of town, extending about ten miles (16 km) along the range of the low Lost Hills Range, for which the town was named.

According to the United States Census Bureau, Lost Hills has a total area of 5.6 square miles (15 km2), of which over 99% is land and 0.21% is water.

[5] The Lost Hills post office opened in 1911, closed in 1912, re-opened in 1913 (having transferred from Cuttens), and moved in 1937.

[4] At one time, the post office was a small rented room, in Edmondson's cafe and bar.

Paramount Farms built a new park and housing development in Lost Hills in the early 2000s.

There were 367 housing units at an average density of 65.4 per square mile (25.3/km2).