Costa Mesa, CA population by gender
The table below shows Costa Mesa's population by gender
Gender | Population | % of Total Population |
---|---|---|
Male | 56,942 | 50.77% |
Female | 55,206 | 49.23% |
TABLE OF CONTENTS
Costa Mesa, CA population by gender, in percentage
The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.23% females and 50.77% males in Costa Mesa, CA.
The above comparison shows there are less females than males in the Costa Mesa city as compared to the nation.

Costa Mesa, CA gender ratio
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
In Costa Mesa, CA, there are more men than women. The Costa Mesa, CA gender ratio is 103.1:100 i.e. 103.1 men to 100 women (1.031).
This ratio is higher than the national average of 98:100 i.e 98 men to 100 women (0.980).
Costa Mesa, CA gender ratio by age
In Costa Mesa, CA, the sex ratio for children under 18 years is 99.6 boys per 100 girls (99.6:100).Having said that, for seniors aged 80 and older, there are 60.3 males per 100 females (60.3:100).
On the national level, the sex ratio (male per 100 females) for under 18 age group is 104.8:100, and 64.5:100 for the senior population 80 years and older.
The table below lists the male and female population in each age group along with the gender ratio for Costa Mesa, CA.
Age Group | Population (Male) | Population (Female) | Gender Ratio |
---|---|---|---|
Under 5 years | 3,178 | 3,229 | 0.98 |
5 to 9 years | 2,761 | 2,637 | 1.05 |
10 to 14 years | 3,283 | 3,514 | 0.93 |
15 to 19 years | 3,383 | 2,941 | 1.15 |
20 to 24 years | 3,474 | 3,336 | 1.04 |
25 to 29 years | 6,012 | 5,870 | 1.02 |
30 to 34 years | 5,270 | 4,880 | 1.08 |
35 to 39 years | 4,725 | 3,867 | 1.22 |
40 to 44 years | 4,319 | 4,009 | 1.08 |
45 to 49 years | 4,034 | 3,130 | 1.29 |
50 to 54 years | 4,131 | 3,762 | 1.10 |
55 to 59 years | 3,443 | 3,737 | 0.92 |
60 to 64 years | 2,658 | 2,792 | 0.95 |
65 to 69 years | 2,429 | 2,414 | 1.01 |
70 to 74 years | 1,642 | 1,945 | 0.84 |
75 to 79 years | 1,001 | 1,153 | 0.87 |
80 to 84 years | 516 | 746 | 0.69 |
85 years and over | 683 | 1,244 | 0.55 |
Interesting observation from the above table:
- The sex ratio at birth is 0.984 i.e. 98.4 boys per 100 girls.
- For the 60-64 years, the sex ratio is 0.952 i.e. 4.8 less men per 100 women.
- While for senior most population of 85+ age group, the sex ratio is 0.549 i.e. 54.9 senior men per 100 senior women.
Costa Mesa, CA population by gender & age
For male population, the largest age group is 25-29 years with a population of 6,012. Whereas, for the female population, the largest age group is 25-29 years with a population of 5,870.
As you can note from the above numbers, the largest age group for men and women are same. The above comparison also shows that there are 142 less females than males, in the age group 25-29 years (The largest age group for both of the genders).

Under the age of 5, there are 3,178 boys and 3,229 girls in Costa Mesa, CA. Thus there are 51 less boys than girls under the age of 5.
Between the age group of 60-64 years, there are 2,658 males and 2,792 females in Costa Mesa, CA. Thus there are 134 less males than females between the age of 60 and 64 years.
For the senior most age group of 85+ years, there are 683 males and 1,244 females.
Things to know
What percent of Costa Mesa, CA is female?
According to the ACS survey, of the total Costa Mesa, CA population of 112,148, 49.23% percent are females.
What percentage of Costa Mesa, CA is male?
According to the ACS survey, of the total Costa Mesa, CA population of 112,148, 50.77% percent are males.
What is the male to female ratio in Costa Mesa, CA?
In Costa Mesa, CA, the male to female ratio is 103.1:100 i.e. 103.1 men to 100 women (1.031).
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates