Costa Mesa population
Costa Mesa, California had an estimated 108,881 residents on July 1, 2025, the 310th-largest city in the US. That is down 1% since the 2010 Census and down 0.4% since 2000.
- Population, July 2025
- 108,881-2.9% since April 2020
- People per sq mile
- 6,88915.8 sq mi of land
- Median age
- 36.713.2% are 65 or older
- Households with kids
- 26.2%with anyone under 18
Population by year, 2000 to 2025
| Year | Population | Change | Basis |
|---|---|---|---|
| 2025 | 108,881 | -129 | Estimate, July 1 |
| 2024 | 109,010 | -74 | Estimate, July 1 |
| 2023 | 109,084 | -919 | Estimate, July 1 |
| 2022 | 110,003 | -1,055 | Estimate, July 1 |
| 2021 | 111,058 | -1,120 | Estimate, July 1 |
| 2020 | 112,178 | -808 | April 2020 estimates base |
| 2019 | 112,986 | -82 | Estimate, July 1 |
| 2018 | 113,068 | +36 | Estimate, July 1 |
| 2017 | 113,032 | -336 | Estimate, July 1 |
| 2016 | 113,368 | -52 | Estimate, July 1 |
| 2015 | 113,420 | +689 | Estimate, July 1 |
| 2014 | 112,731 | +604 | Estimate, July 1 |
| 2013 | 112,127 | +455 | Estimate, July 1 |
| 2012 | 111,672 | +705 | Estimate, July 1 |
| 2011 | 110,967 | +1,007 | Estimate, July 1 |
| 2010 | 109,960 | +426 | 2010 Census (April 1) |
| 2009 | 109,534 | +535 | Estimate, July 1 |
| 2008 | 108,999 | +407 | Estimate, July 1 |
| 2007 | 108,592 | -558 | Estimate, July 1 |
| 2006 | 109,150 | -836 | Estimate, July 1 |
| 2005 | 109,986 | -608 | Estimate, July 1 |
| 2004 | 110,594 | -104 | Estimate, July 1 |
| 2003 | 110,698 | +248 | Estimate, July 1 |
| 2002 | 110,450 | +311 | Estimate, July 1 |
| 2001 | 110,139 | +768 | Estimate, July 1 |
| 2000 | 109,371 | April 2000 estimates base |
Year-to-year changes across 2010 and 2020 mix census counts with estimates, so small jumps at those years are partly method changes.
Frequently asked questions
What is the population of Costa Mesa in 2025?
The Census Bureau estimates Costa Mesa had 108,881 residents on July 1, 2025, making it the 310th-largest city in the US.
Is Costa Mesa growing?
No. Costa Mesa has shrunk 1% since the 2010 Census (109,960 people), and shrunk 2.9% since 2020.
What was the population of Costa Mesa in 2000?
About 109,371 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 109,960.
How dense is Costa Mesa?
Costa Mesa has about 6,889 people per square mile of land (15.8 square miles).
More about Costa Mesa
See cost of living, jobs and commutes in Costa Mesa, Costa Mesa weather by month, or every Costa Mesa ZIP code. For the biggest cities in the country, see the largest US cities.