Dayton

County:: Columbia County
County Seat:: Yes
Area (mi²):: 1.442
State:: Washington

Dayton is a city located in Columbia County, Washington. Dayton has a 2025 population of 2,556. It is also the county seat of .Dayton is currently growing at a rate of 0.91% annually and its population has increased by 4.75% since the most recent census, which recorded a population of 2,440 in 2020.

The average household income in Dayton is $91,002 with a poverty rate of 11.76%. The median age in Dayton is 51.3 years: 50.2 years for males, and 52.3 years for females.

Demographics

The racial composition of Dayton includes 76.25% White, 5.38% other race, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	2,055	76.25%
Two or more races	479	17.77%
Other race	145	5.38%
Black or African American	10	0.37%
Native American	5	0.19%
Asian	1	0.04%
Native Hawaiian or Pacific Islander	0	0%

Dayton Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Dayton's average per capita income is $57,089. Household income levels show a median of $71,687. The poverty rate stands at 11.76%.

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	$104,653	-
Families	$94,792	$115,324
Households	$71,687	$91,002
Non Families	$46,288	$46,460

$57,089

Average Income

$71,687

Median Household Income

11.76%

Poverty Rate