Vandalia, Ohio

Vandalia, Ohio
Aerial view of Vandalia, with Dayton International Airport to the north
Location in Montgomery County and the state of Ohio
Coordinates: 39°52′40″N 84°11′35″W / 39.87778°N 84.19306°W / 39.87778; -84.19306
CountryUnited States
StateOhio
CountyMontgomery
Area
  Total
12.39 sq mi (32.09 km2)
  Land12.35 sq mi (31.98 km2)
  Water0.04 sq mi (0.11 km2)
Elevation
955 ft (291 m)
Population
 (2020)
  Total
15,209
  Density1,231.80/sq mi (475.60/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP code
45377
Area code(s)937, 326
FIPS code39-79492
GNIS feature ID1086680
Websitevandaliaohio.org

Vandalia is a city in Montgomery County, Ohio, United States, and a suburb of Dayton. Its population was 15,209 during the 2020 census. In addition to being the city closest to Dayton International Airport, Vandalia lies at the crossroads of I-75 and I-70.