[2] It is located 8.5 miles (14 km) north-northwest of Cedarville,[3] at an elevation of 4,626 feet (1,410 m).

According to the United States Census Bureau, the CDP covers an area of 5.8 square miles (15.1 km2), 99.96% of it land, and 0.04% of it water.

The 2010 United States Census[7] reported that Lake City had a population of 61.

14 households (41.2%) were made up of individuals, and 7 (20.6%) had someone living alone who was 65 years of age or older.

[9] Federally, Lake City is in California's 1st congressional district, represented by Republican Doug LaMalfa.