Contra Costa County, CA population by gender
The table below shows Contra Costa County's population by gender
| Gender | Population | % of Total Population |
|---|---|---|
| Female | 589,574 | 50.71% |
| Male | 573,074 | 49.29% |
TABLE OF CONTENTS
Contra Costa County, CA population by gender, in percentage
The female percentage in the USA is 50.41% while the male percentage is 49.59%, compared to 50.71% females and 49.29% males in Contra Costa County, CA.
The above comparison shows there are more females than males in the Contra Costa County county as compared to the nation.
FIGURE 1
Contra Costa County, CA population by gender.
There is a slight majority of female population, with 50.71% of total population being female.
Contra Costa County, CA gender ratio
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
In Contra Costa County, CA, there are less men than women. The Contra Costa County, CA gender ratio is 97.2:100 i.e. 97.2 men to 100 women (0.972).
This ratio is lower than the national average of 98.4:100 i.e 98.4 men to 100 women (0.984).
Contra Costa County, CA gender ratio by age
In Contra Costa County, CA, the sex ratio for children under 18 years is 104.1 boys per 100 girls (104.1:100).Having said that, for seniors aged 80 and older, there are 66.6 males per 100 females (66.6:100).
On the national level, the sex ratio (male per 100 females) for under 18 age group is 104.9:100, and 63.4:100 for the senior population 80 years and older.
Contra Costa County, CA gender ratio by age
The table below lists the male and female population in each age group along with the gender ratio for Contra Costa County, CA.
| Age Group | Population (Male) | Population (Female) | Gender Ratio |
|---|---|---|---|
| Under 5 years | 32,004 | 30,825 | 1.04 |
| 5 to 9 years | 35,579 | 34,287 | 1.04 |
| 10 to 14 years | 39,544 | 37,941 | 1.04 |
| 15 to 19 years | 39,108 | 36,891 | 1.06 |
| 20 to 24 years | 34,647 | 33,337 | 1.04 |
| 25 to 29 years | 35,439 | 34,147 | 1.04 |
| 30 to 34 years | 37,315 | 37,182 | 1.00 |
| 35 to 39 years | 40,944 | 40,226 | 1.02 |
| 40 to 44 years | 39,157 | 40,659 | 0.96 |
| 45 to 49 years | 39,336 | 39,931 | 0.99 |
| 50 to 54 years | 40,361 | 40,385 | 1.00 |
| 55 to 59 years | 40,071 | 40,357 | 0.99 |
| 60 to 64 years | 35,266 | 37,402 | 0.94 |
| 65 to 69 years | 28,064 | 32,648 | 0.86 |
| 70 to 74 years | 23,603 | 27,106 | 0.87 |
| 75 to 79 years | 14,551 | 19,076 | 0.76 |
| 80 to 84 years | 9,281 | 12,720 | 0.73 |
| 85 years and over | 8,804 | 14,454 | 0.61 |
Interesting observation from the above table:
- The sex ratio at birth is 1.038 i.e. 103.8 boys per 100 girls.
- For the 60-64 years, the sex ratio is 0.943 i.e. 5.7 less men per 100 women.
- While for senior most population of 85+ age group, the sex ratio is 0.609 i.e. 60.9 senior men per 100 senior women.
Contra Costa County, CA population by gender & age
For male population, the largest age group is 35-39 years with a population of 40,944. Whereas, for the female population, the largest age group is 40-44 years with a population of 40,659.
As you can note from the above numbers, the largest age group for men and women are different.
FIGURE 2
Contra Costa County, CA population by gender and age.
Largest age group (population): Male # 35-39 years (40,944) | Female # 40-44 years (40,659).
Under the age of 5, there are 32,004 boys and 30,825 girls in Contra Costa County, CA. Thus there are 1,179 more boys than girls under the age of 5.
Between the age group of 60-64 years, there are 35,266 males and 37,402 females in Contra Costa County, CA. Thus there are 2,136 less males than females between the age of 60 and 64 years.
For the senior most age group of 85+ years, there are 8,804 males and 14,454 females.
Things to know
What percent of Contra Costa County, CA is female?
According to the ACS survey, of the total Contra Costa County, CA population of 1.16 million, 50.71% percent are females.
What percentage of Contra Costa County, CA is male?
According to the ACS survey, of the total Contra Costa County, CA population of 1.16 million, 49.29% percent are males.
What is the male to female ratio in Contra Costa County, CA?
In Contra Costa County, CA, the male to female ratio is 97.2:100 i.e. 97.2 men to 100 women (0.972).
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates