El Cajon, California

El Cajon population, 2020 to 2024

El Cajon lost 2,796 residents from July 2020 to July 2024, a change of -2.6%. In the latest year it moved by -231. Among 429 California places of 5,000 or more, that growth ranks 314th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so El Cajon is 2.8 times that size.

El Cajon covers 14.51 square miles of land, for 7,119 people per square mile of land. The median California place of 5,000+ has 3,725, so El Cajon is denser than the typical town.

What county El Cajon is in

All of El Cajon's residents live in San Diego County, which had 3,298,799 residents in 2024. El Cajon holds 3.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in El Cajon

3 ZIP Code Tabulation Areas (ZCTAs) overlap El Cajon by at least 10% of the ZCTA's or the city's land: 92019, 92020, 92021. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where El Cajon is

The Census internal point of El Cajon is at 32.801700, -116.960500. Sacramento, the capital, is 473.1 miles NNW in a straight line. The nearest larger place is San Diego, CA (1,404,452 people), 10.2 miles away. The ground at the internal point is about 132 m (433 ft) above sea level.

Daylight in El Cajon

At 32.80° N, El Cajon gets about 14 h 19 min of daylight around the June solstice and 9 h 59 min around the December solstice, a swing of 4 h 20 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the El Cajon daylight page.

Places near El Cajon

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Santee, 4.0 miles away, with 59,104 people.