Dayton Flag

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 2026 population of 2,482. It is also the county seat of Columbia County. Dayton is currently growing at a rate of 0.24% annually and its population has increased by 1.39% since the most recent census, which recorded a population of 2,448 in 2020.

The median household income in Dayton is $70,625 with a poverty rate of 11.92%. The median age in Dayton is 45.3 years: 42.9 years for males, and 49.5 years for females. For every 100 females there are 100.6 males.

2.5K
Total Population
1,721
Density (mi²)
6 0.24%
Growth

Dayton Population

Dayton Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20262,48260.24%
20252,47650.2%
20242,471-22-0.88%
20232,493190.77%
20222,474-12-0.48%
20212,486361.47%
20202,448-16-0.65%
20192,464-23-0.92%
20182,487240.97%
20172,463140.57%
20162,44950.2%
20152,444-20-0.81%
20142,464-18-0.73%
20132,482120.49%
20122,470-18-0.72%
20112,488-56-2.2%
20102,544180.71%
20002,655903.51%
19802,565-31-1.19%
19702,596-317-10.88%
19602,913-66-2.22%
19502,979-47-1.55%
19403,02649819.7%
19302,528-167-6.2%
19202,69500%

Median Age

Overall: 45.3 years
Female: 49.5 years
Male: 42.9 years

Dayton Adults

There are 2,223 adults, (683 of whom are seniors) in Dayton.

Sex Ratio

Female: 1,383 (49.9%)
Male: 1,391 (50.1%)

Demographics

The racial composition of Dayton includes 78.19% White, 4.83% other race, and smaller percentages for Asian, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,16978.19%
Two or more races37413.48%
Other race1344.83%
Asian752.7%
Black or African American220.79%
Race
Population ↓
Percentage (of total)
Other race1264.54%
Two or more races973.5%
White762.74%
Race
Population ↓
Percentage (of total)
White2,09375.45%
Two or more races2779.99%
Asian752.7%
Black or African American220.79%
Other race80.29%

Dayton Marital Status

Economics and Income Statistics

Dayton 's average per capita income is $53,380. Household income levels show a median of $70,625. The poverty rate stands at 11.92%.

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$106,875-
Families$93,750$95,111
Households$70,625$77,236
Non Families$42,500$42,365

$53,380

Average Income

$70,625

Median Household Income

11.92%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)