Montgomery County Map, Ohio

Written and Fact-checked by | Updated On: April 30, 2026 | 13:31 ET

Map of Montgomery County - Montgomery County is a county located in the U.S. state of Ohio. Montgomery County Map showing cities, highways, important places and water bodies. Get Where is Montgomery County located in the map, major cities in Montgomery county, population, areas, and places of interest.

Map of Montgomery County, Ohio

Map of Montgomery County, Ohio

About Montgomery County Map, Ohio: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.

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About Montgomery County, Ohio

Montgomery County is a county located in the U.S. state of Ohio. It's county seat is Dayton. As per 2020 census, the population of Montgomery County is 535840 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 461.68 sq mi (1,196 km2). Montgomery County was established on -35307.

Montgomery County Facts

ContinentNorth America
CountryUnited States
StateOhio
County SeatDayton
Largest City/TownDayton
EstablishedMay 1, 1803
Total Area464 sq mi (1,202 sq km)
Land Area462 sq mi (1,196 sq km)
Water Area2.2 sq mi (5.7 sq km)
Population537,309 (Census 2020)
Population Density1,163 people per sq mi
Time ZoneEastern Time Zone (ET)
Major HighwaysI-75, I-70, I-675, US-35, US-40, US-127
Neighboring CountiesMiami County, Greene County, Clark County, Warren County, Preble County, Darke County
Famous ForDayton, aviation history, Wright brothers, manufacturing
Top AttractionsNational Museum of the U.S. Air Force, Carillon Historical Park, Dayton Aviation Heritage Park, Five Rivers MetroParks
Official Websitehttps://www.mcohio.org/

Cities and Towns in Montgomery County, Ohio

  • Dayton (county seat) – 137,644 (Census 2020)
  • Kettering – 57,862 (Census 2020)
  • Huber Heights – 43,439 (Census 2020)
  • Miamisburg – 20,181 (Census 2020)

Roads and Highways in Montgomery County, Ohio

Montgomery County is a major transportation hub in western Ohio with extensive highway connections.

  • I-75 – major north-south interstate connecting Dayton to Toledo and Cincinnati
  • I-70 – major east-west interstate linking Dayton to Columbus and Indianapolis
  • I-675 – bypass loop around Dayton connecting suburbs
  • US-35 – connects Dayton to Chillicothe and Richmond, Indiana
  • US-40 – historic route running east-west through the county
  • US-127 – north-south route connecting the county to Michigan and Kentucky

Neighboring Counties of Montgomery County

  • Miami County (north)
  • Clark County (northeast)
  • Greene County (east)
  • Warren County (south)
  • Preble County (west)
  • Darke County (northwest)

Top Attractions in Montgomery County, Ohio

Montgomery County offers major cultural attractions, parks, and historic sites centered around Dayton.

  • National Museum of the U.S. Air Force – one of the largest aviation museums in the world
  • Carillon Historical Park – showcases Dayton’s history and innovation
  • Dayton Aviation Heritage National Historical Park – honors the Wright brothers
  • Five Rivers MetroParks – network of parks with trails and outdoor activities
  • Boone Street Market – vibrant public market in Dayton
  • Oregon District – historic neighborhood with shops, dining, and nightlife
  • Dayton Art Institute – museum with diverse art collections
  • RiverScape MetroPark – downtown park with riverfront views and events

Distance from Montgomery County to Nearby Cities

  • Montgomery County to Cincinnati – 50 mi (80 km)
  • Montgomery County to Columbus – 70 mi (113 km)
  • Montgomery County to Indianapolis – 110 mi (177 km)
  • Montgomery County to Toledo – 150 mi (241 km)
  • Montgomery County to Cleveland – 220 mi (354 km)

FAQs about Montgomery County

Where is Montgomery County located?

Montgomery County is located in western Ohio and is centered around the city of Dayton.

What is Montgomery County known for?

It is known for aviation history, the Wright brothers, and its role in manufacturing.

What is the population of Montgomery County?

The population was 537,309 according to the 2020 Census.

What is the county seat of Montgomery County?

The county seat is Dayton.

Are there attractions in Montgomery County?

Yes, the county offers museums, parks, and historic sites.