Napa County, CA population by gender
The table below shows Napa County's population by gender
Gender | Population | % of Total Population |
---|---|---|
Male | 69,540 | 50.10% |
Female | 69,255 | 49.90% |
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Napa County, CA population by gender, in percentage
The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.90% females and 50.10% males in Napa County, CA.
The above comparison shows there are more females than males in the Napa County county as compared to the nation.

Napa County, CA gender ratio
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
In Napa County, CA, there are more men than women. The Napa County, CA gender ratio is 100.4:100 i.e. 100.4 men to 100 women (1.004).
This ratio is higher than the national average of 98:100 i.e 98 men to 100 women (0.980).
Napa County, CA gender ratio by age
In Napa County, CA, the sex ratio for children under 18 years is 106.5 boys per 100 girls (106.5:100).Having said that, for seniors aged 80 and older, there are 64.6 males per 100 females (64.6:100).
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 Napa County, CA.
Age Group | Population (Male) | Population (Female) | Gender Ratio |
---|---|---|---|
Under 5 years | 3,381 | 3,281 | 1.03 |
5 to 9 years | 3,835 | 3,361 | 1.14 |
10 to 14 years | 4,559 | 4,489 | 1.02 |
15 to 19 years | 4,602 | 4,484 | 1.03 |
20 to 24 years | 4,229 | 4,029 | 1.05 |
25 to 29 years | 4,262 | 4,067 | 1.05 |
30 to 34 years | 4,306 | 4,262 | 1.01 |
35 to 39 years | 4,589 | 4,277 | 1.07 |
40 to 44 years | 4,573 | 4,331 | 1.06 |
45 to 49 years | 4,605 | 4,486 | 1.03 |
50 to 54 years | 4,631 | 4,526 | 1.02 |
55 to 59 years | 4,632 | 5,105 | 0.91 |
60 to 64 years | 4,782 | 4,356 | 1.10 |
65 to 69 years | 3,894 | 4,261 | 0.91 |
70 to 74 years | 3,598 | 3,762 | 0.96 |
75 to 79 years | 2,523 | 2,250 | 1.12 |
80 to 84 years | 1,383 | 1,838 | 0.75 |
85 years and over | 1,156 | 2,090 | 0.55 |
Interesting observation from the above table:
- The sex ratio at birth is 1.030 i.e. 103 boys per 100 girls.
- For the 60-64 years, the sex ratio is 1.098 i.e. 9.8 more men per 100 women.
- While for senior most population of 85+ age group, the sex ratio is 0.553 i.e. 55.3 senior men per 100 senior women.
Napa County, CA population by gender & age
For male population, the largest age group is 60-64 years with a population of 4,782. Whereas, for the female population, the largest age group is 55-59 years with a population of 5,105.
As you can note from the above numbers, the largest age group for men and women are different.

Under the age of 5, there are 3,381 boys and 3,281 girls in Napa County, CA. Thus there are 100 more boys than girls under the age of 5.
Between the age group of 60-64 years, there are 4,782 males and 4,356 females in Napa County, CA. Thus there are 426 more males than females between the age of 60 and 64 years.
For the senior most age group of 85+ years, there are 1,156 males and 2,090 females.
Things to know
What percent of Napa County, CA is female?
According to the ACS survey, of the total Napa County, CA population of 138,795, 49.90% percent are females.
What percentage of Napa County, CA is male?
According to the ACS survey, of the total Napa County, CA population of 138,795, 50.10% percent are males.
What is the male to female ratio in Napa County, CA?
In Napa County, CA, the male to female ratio is 100.4:100 i.e. 100.4 men to 100 women (1.004).
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates