Costa Mesa is a city in California, with a population of 108,881 and about 6,889 residents per square mile. The median household earns $111,505 a year, and the median home is worth $1,115,100.
Conditions
Humidity & wind
—
UV index
—
Sunrise & sunset
—
Local time
—
Size & density
Land area
16 sq mi
Water excluded
Population density
6,889
People per square mile
Rank by population
#310
Of cities on this site
Rank by area
#729
Of cities on this site
Money & housing
Median household income
$111,505
US median ≈ $78,538
Median gross rent
$2,446
Per month
Homeownership
39.6%
US ≈ 65%
Average commute
22.4 min
One way
People
Median age
36.7
US median 39.1
Bachelor's degree +
45%
Age 25 and over
Foreign born
22.3%
Households
42,292
2.56 people each
Climate · 2021–2025 average
Clear days45/yrMostly or fully clear sky
Days with rain65/yr0.01 in or more
Days with snow0/yr
Days above 90°1/yr
Below freezing0/yr
Annual rainfall18.9inInches per year, scaled to 70 in — the rows above count days
Warmest month
August
Average high 76°F
Coldest month
January
Average low 48°F
What people here do for work
Professional & business services18.6%
Education & health care17.1%
Arts, food & hospitality11.5%
Retail trade10.7%
Top four industries · share of all workers · ACS 2024
Wealthiest person in California
Name
Mark Zuckerberg
Forbes, Apr 2025
Net worth
$189B
As of 25 Apr 2025 — not live
Lives in
Palo Alto
Source of wealth
Meta
Compiled from public reporting, not from an official dataset, and not independently verified.
Largest employer in California · private sector
Employer
University of California
Sector
Education
Compiled from public reporting, not from an official dataset, and not independently verified. Government employers are excluded.
Largest public company in California
Company
Apple
Revenue
$391.0B
Fiscal year 2024
Headquarters
Cupertino
Ticker
AAPL
Compiled from public reporting, not from an official dataset, and not independently verified.