Washington · Census place 5316970

Dayton, Washington

Dayton is a city in Columbia County, Washington with an estimated 2,471 residents on July 1, 2024. It is the 157th largest of 206 incorporated places of 1,000+ people in the state.

Population 2024
2,471
#157 of 206 in Washington
Change since 2020
+0.9%
+23 people
Land area
1.4 sq mi
Density
1,716 / sq mi
State median 2,694
Orange pin: Dayton. Shaded: its county. Dark pin: Olympia.

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Dayton population, 2020 to 2024

Dayton added 23 residents from July 2020 to July 2024, a change of +0.9%. In the latest year it moved by -22.

2,44820202,48620212,47420222,49320232,4712024
July 1 estimates. The April 2020 estimates base was 2,450. The axis starts above zero so yearly changes are visible.

Dayton covers 1.44 square miles of land, for 1,716 people per square mile of land. The median Washington place of 5,000+ has 2,694, so Dayton is less dense than the typical town.

What county Dayton is in

All of Dayton's residents live in Columbia County, which had 4,025 residents in 2024. Dayton holds 61.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Dayton

1 ZIP Code Tabulation Area (ZCTA) overlaps Dayton by at least 10% of the ZCTA's or the city's land: 99328. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Dayton is

The Census internal point of Dayton is at 46.316800, -117.976800. Olympia, the capital, is 238.6 miles WNW in a straight line. The nearest larger place is Walla Walla, WA (33,901 people), 24.4 miles away. The nearest city of 100,000 or more is Spokane, WA, 96.7 miles away.

Internal point

Decimal
46.316800, -117.976800
DMS
46°19'0.48"N 117°58'36.48"W
UTM
11N 424797.1E 5129710.7N
Geohash
c2hp7reyv
Plus code
85R4828F+P7

Daylight in Dayton

At 46.32° N, Dayton gets about 15 h 48 min of daylight around the June solstice and 8 h 36 min around the December solstice, a swing of 7 h 12 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Dayton

The eight nearest incorporated places of 1,000+ in Washington, measured between internal points. The closest is Waitsburg, 8.9 miles away, with 1,173 people.

Questions people ask

What is the population of Dayton, WA?

2,471 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 23 (0.9%) from 2,448 in July 2020.

What county is Dayton in?

Columbia County. All of its residents live in that county.

What ZIP codes cover Dayton?

1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 99328.

How far is Dayton from Olympia?

238.6 miles (384.0 km) in a straight line, heading WNW from Dayton.

What is the nearest larger city to Dayton?

Walla Walla, WA, with 33,901 residents, 24.4 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

  1. 01Census Vintage 2024 subcounty population estimates
  2. 02Census 2024 Gazetteer, places
  3. 03Census 2020 ZCTA to place relationship file
  4. 04Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.