Where is Troy, Illinois

Written and Fact-checked by | Updated On: August 5, 2026

Troy is a city in southwestern Illinois and part of Madison County. Located about 20 miles northeast of downtown St. Louis, Missouri, the city is part of the greater St. Louis metropolitan area. Troy is known for its historic downtown, nearby parks, convenient transportation links, and location within the Metro East region.

Location Map of Troy, Madison County, Illinois

Where is Troy Located in Madison County, Illinois

About Map: The map shows the location of Troy in Madison County, in the U.S. state of Illinois.

Troy Map, Illinois

About Troy Map: The Google Map highlights the location of Troy in Madison County, Illinois. Use the zoom, satellite, and street-view options to explore the city's neighborhoods, roads, and nearby places.

Where is Troy Located?

Troy is a city located in Madison County, Illinois, the United States. It lies in southwestern Illinois within the Metro East area of the St. Louis metropolitan region. Troy is about 20 miles northeast of downtown St. Louis and roughly 8 miles east of Edwardsville. Collinsville is approximately 10 miles southwest, while Highland is about 15 miles northeast of Troy. The city is located near 38.7292° North latitude and 89.8831° West longitude. The 2020 Census recorded 10,999 residents. Troy covers about 7.24 square miles, or approximately 18.75 square kilometers. The surrounding landscape includes gently rolling farmland, residential neighborhoods, wooded areas, and small streams. Troy developed as a farming and railroad community and later became a suburban center as the St. Louis metropolitan area expanded eastward. Its location near Interstate 55 and Interstate 70 provides convenient connections to St. Louis and other communities across southern Illinois. Nearby Edwardsville and Collinsville offer additional shopping, dining, education, and recreation opportunities. The Madison County Transit trail system also provides access to regional walking and cycling routes. A unique feature of Troy is its combination of small-city character and close proximity to the St. Louis metropolitan area while retaining its agricultural surroundings.

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Troy City Facts

FactDetails
CityTroy
StateIllinois
CountyMadison County
CountryUnited States
RegionSouthwestern Illinois, Metro East
Incorporated1857
Founded1819
Total Area7.24 sq mi (18.75 sq km)
Land Area7.20 sq mi (18.65 sq km)
Water Area0.04 sq mi (0.10 sq km)
ElevationAbout 530 ft (161 m)
Population (2020 Census)10,999
Population DensityAbout 1,528 people per sq mi
Time ZoneCentral Time (CST/CDT)
ZIP Codes62294
Area Code618, 730
Major HighwaysInterstate 55, Interstate 70, U.S. Route 40, Illinois Route 162
Public TransitMadison County Transit
Major AttractionsTroy Historic District, Tri-Township Park, Madison County Transit Trails, Edwardsville Historic District, Cahokia Mounds
Official Websitehttps://www.troyil.us/

Distance from Troy, IL to Nearby Cities

  • Maryville, IL – 5 miles (8 km)
  • Edwardsville, IL – 8 miles (13 km)
  • Collinsville, IL – 10 miles (16 km)
  • Glen Carbon, IL – 10 miles (16 km)
  • Highland, IL – 15 miles (24 km)
  • O'Fallon, IL – 15 miles (24 km)
  • Shiloh, IL – 15 miles (24 km)
  • St. Louis, MO – 20 miles (32 km)
  • Belleville, IL – 20 miles (32 km)
  • Alton, IL – 25 miles (40 km)
  • East St. Louis, IL – 20 miles (32 km)
  • Carlyle, IL – 35 miles (56 km)
  • Jerseyville, IL – 40 miles (64 km)
  • Centralia, IL – 65 miles (105 km)
  • Effingham, IL – 75 miles (121 km)
  • Springfield, IL – 90 miles (145 km)
  • Columbia, MO – 125 miles (201 km)
  • Peoria, IL – 140 miles (225 km)

Top Attractions in Troy

  • Tri-Township Park – A large community park offering sports fields, walking paths, playgrounds, picnic areas, fishing ponds, and recreation facilities.
  • Troy Historic District – Historic homes and buildings reflect the community's development during the 19th and early 20th centuries.
  • Madison County Transit Trails – A regional network of trails connecting Troy with Edwardsville, Glen Carbon, and other Metro East communities.
  • Cahokia Mounds State Historic Site – A nearby archaeological site preserving the remains of one of the largest pre-Columbian settlements in North America.
  • Edwardsville Historic District – A nearby downtown area featuring historic architecture, local businesses, restaurants, and cultural attractions.
  • Vadalabene Center – A regional recreation and athletic facility at Southern Illinois University Edwardsville with sports events and community programs.
  • The Nature Institute – A nearby nature preserve in Godfrey with hiking trails, forests, prairies, wetlands, and environmental education.
  • Gateway Arch National Park – A major St. Louis attraction featuring the Gateway Arch, museum exhibits, riverfront views, and historic sites.
  • Missouri Botanical Garden – A nationally recognized botanical garden in St. Louis with extensive plant collections, gardens, conservatories, and seasonal displays.

Airports Near Troy, Illinois

  • MidAmerica St. Louis Airport (BLV) – 20 miles
  • St. Louis Lambert International Airport (STL) – 35 miles
  • St. Louis Downtown Airport (CPS) – 25 miles
  • Spirit of St. Louis Airport (SUS) – 45 miles
  • Abraham Lincoln Capital Airport (SPI) – 90 miles

Sources:

Population and area data sourced from the United States Census Bureau (2020 Census). General city information referenced from the official Troy city website and local government records.

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