Costa Mesa Population

1940–2026

108.12K

2026 projection

3.4% since 2020 (decrease)

020K40K60K80K100K120K19401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Costa Mesa. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026108,122-7590.70%
2025108,881-1290.12%
2024109,010-740.07%
2023109,084-9190.84%
2022110,003-1,0550.95%
2021111,058-8600.77%
2020111,918-4270.38%
2019112,345-1500.13%
2018112,495-340.03%
2017112,529-4050.36%

Showing 10 of 24 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Costa Mesa has a population change lower than Orange County, California, and the U.S.

  • United States+3.1%
  • California−0.4%
  • Orange County−1.2%
  • Costa Mesa−2.8%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Costa Mesa Demographics

36.7median age

Median age

Female36.9 yrs
Male36.6 yrs

Adults

89,886
14,577 seniors (65+) · 16% of adults75,309 other adults

Sex

Female 48.6% · 53,654Male 51.4% · 56,676

Population by age

MaleFemale85+ years, male: 63685+ years, female: 1,35780–84 years, male: 57580–84 years, female: 86875–79 years, male: 1,01275–79 years, female: 1,30070–74 years, male: 1,77070–74 years, female: 1,98865–69 years, male: 2,74365–69 years, female: 2,32860–64 years, male: 3,29660–64 years, female: 2,83855–59 years, male: 3,60555–59 years, female: 3,87850–54 years, male: 4,37950–54 years, female: 3,45145–49 years, male: 3,06945–49 years, female: 2,73540–44 years, male: 3,95440–44 years, female: 4,01235–39 years, male: 4,89635–39 years, female: 4,04430–34 years, male: 5,18530–34 years, female: 4,83925–29 years, male: 6,04825–29 years, female: 5,10520–24 years, male: 3,56120–24 years, female: 3,51715–19 years, male: 3,66015–19 years, female: 3,06310–14 years, male: 2,77010–14 years, female: 3,2305–9 years, male: 2,5605–9 years, female: 2,2090–4 years, male: 2,9570–4 years, female: 2,89285+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 1,103 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Costa Mesa Income

$111,505median household income

Median household income

$111,505

Half of households earn more, half earn less

Median earnings

$62,214

Typical yearly pay for a worker 25 or older.

Poverty rate

9.1%

About 1 in 11 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Costa Mesa Marital Status

42% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married42%42%43%
Never married43%47%39%
Divorced10%9%12%
Widowed4%2%6%
Separated2%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources