Byrnes Mill

County:: Jefferson County
County Seat:: No
Area (mi²):: 5.141
State:: Missouri

Byrnes Mill is a city located in Jefferson County, Missouri. Byrnes Mill has a 2025 population of 3,191. Byrnes Mill is currently growing at a rate of 0.09% annually and its population has increased by 0.47% since the most recent census, which recorded a population of 3,176 in 2020.

The average household income in Byrnes Mill is $99,181 with a poverty rate of 20.14%. The median age in Byrnes Mill is 39.2 years: 40.6 years for males, and 37.5 years for females.

Demographics

The racial composition of Byrnes Mill includes 87.47% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	2,771	87.47%
Two or more races	347	10.95%
Black or African American	50	1.58%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Byrnes Mill Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Byrnes Mill's average per capita income is $58,393. Household income levels show a median of $87,663. The poverty rate stands at 20.14%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$126,369	-
Families	$115,144	$114,540
Households	$87,663	$99,181
Non Families	$37,227	$61,280

$58,393

Average Income

$87,663

Median Household Income

20.14%

Poverty Rate