Costa Mesa, California

Costa Mesa population, 2020 to 2024

Costa Mesa lost 2,919 residents from July 2020 to July 2024, a change of -2.6%. In the latest year it moved by -171. Among 429 California places of 5,000 or more, that growth ranks 312th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Costa Mesa is 2.9 times that size.

Costa Mesa covers 15.81 square miles of land, for 6,903 people per square mile of land. The median California place of 5,000+ has 3,725, so Costa Mesa is denser than the typical town.

What county Costa Mesa is in

All of Costa Mesa's residents live in Orange County, which had 3,170,435 residents in 2024. Costa Mesa holds 3.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Costa Mesa

2 ZIP Code Tabulation Areas (ZCTAs) overlap Costa Mesa by at least 10% of the ZCTA's or the city's land: 92626, 92627. 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 Costa Mesa is

The Census internal point of Costa Mesa is at 33.665900, -117.912300. Sacramento, the capital, is 393.7 miles NNW in a straight line. The nearest larger place is Santa Ana, CA (316,184 people), 5.2 miles away. The ground at the internal point is about 22 m (72 ft) above sea level.

Daylight in Costa Mesa

At 33.67° N, Costa Mesa gets about 14 h 24 min of daylight around the June solstice and 9 h 55 min around the December solstice, a swing of 4 h 29 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 Costa Mesa daylight page.

Places near Costa Mesa

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Fountain Valley, 3.8 miles away, with 56,036 people.