Lennox is a census-designated place (CDP) in Los Angeles County, California, United States. The population was 22,753 at the 2010 census, down from 22,950 at the 2000 census.
Lennox's boundaries are Century Boulevard to the north (along with neighboring cities of Inglewood and Los Angeles), Interstate 405 (the San Diego Freeway) to the west, and Interstate 105 (the Glenn Anderson Freeway) to the south. Hawthorne Boulevard and Prairie Avenue make up portions of its eastern boundary with Inglewood. The CDP sits underneath the flight path of passenger jets landing at Los Angeles International Airport (LAX).
According to the United States Census Bureau, the CDP has a total area of 1.1 square miles (2.8 km2), all land.
At the 2010 census Lennox had a population of 22,753. The population density was 20,809.4 people per square mile (8,034.6/km2). The racial makeup of Lennox was 8,623 (37.9%) White (1.9% Non-Hispanic White), 765 (3.4%) African American, 199 (0.9%) Native American, 177 (0.8%) Asian, 188 (0.8%) Pacific Islander, 11,811 (51.9%) from other races, and 990 (4.4%) from two or more races. Hispanic or Latino of any race were 21,162 persons (93.0%).
The census reported that 22,741 people (99.9% of the population) lived in households, 12 (0.1%) lived in non-institutionalized group quarters, and no one was institutionalized.