El Segundo is a city in Los Angeles County, California, United States. El Segundo, from Spanish, means «The Second». Located on the Santa Monica Bay, it was incorporated on January 18, 1917, and part of the South Bay Cities Council of Governments. The population was 16,654 at the 2010 census, slightly up from 16,033 at the 2000 census.
The north and south boundaries of the town are Los Angeles International Airport and Manhattan Beach, with the Pacific Ocean as the western boundary. Its eastern boundary is roughly Aviation Blvd. According to the United States Census Bureau, the city has a total area of 5.5 square miles (14 km2), over 99% of which is land.
Guinness World Records has listed El Segundo as having the most roads with a hill or grade.