Dayton Flag

Dayton

County Seat:
Yes
Area (mi²):
55.812
State:
Ohio

Dayton is a city located in Montgomery County, Ohio. Dayton has a 2026 population of 136,346. It is also the county seat of Montgomery County. Dayton is currently growing at a rate of 0.3% annually but its population has decreased by -0.88% since the most recent census, which recorded a population of 137,553 in 2020.

136.3K
Total Population
2,443
Density (mi²)
410 0.3%
Growth

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)