What is the population of Troy?

The population of Troy, IL is 10,399.

Where is Troy located?

Troy, IL is located at latitude 38.7292100 and longitude -89.8831500. It is in United States.

What is the area of Troy?

The area of Troy, IL is 13.850437 km².

What is the elevation of Troy?

Troy, IL has an elevation of 171 meters (561 feet) above sea level.

What time zone is Troy in?

Troy, IL is in the America/Chicago time zone.

What state is Troy in?

Troy is in the state of Illinois, United States.

What county is Troy, IL in?

Troy is in Madison County, Illinois.

How has the population of Troy changed?

The population of Troy, IL has increased from 9,888 (2010) to 10,399 (2020), a change of 5.2%.

Troy, Illinois

Troy: city in Madison County, Illinois, United States

About

Troy is a city located in the county of Madison in the U.S. state of Illinois. Its population at the 2010 census was 9,888 and a population density of 714 people per km². After 10 years in 2020 city had an estimated population of 10,399 inhabitants.

Troy locator map — Location of Troy on Illinois map.

Quick Facts about Troy

Population	10,399 (2020)
Country	United States of America
State	Illinois (United States)
County	Madison County
Postal code	62294
Phone Area Codes	618
Area	13.85 km²
Latitude & Longitude	38.7292,-89.8832
Time Zone	America/Chicago
Local time	19:44:46 (22nd April 2026)
Density	751 Pop. per km² as of 2020
Population growth	4.91% (2010-2020)
Weather	78℉ Sunny 7-days weather

William W. Jarvis House image

Geography

Troy is located at 38°43'45"N 89°52'59"W (38.7292100, -89.8831500).

Troy map

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Weather

78°F

Sunny

6 to 9 mph SW Wednesday

Sunny, with a high near 78. Southwest wind 6 to 9 mph.

7-Day Forecast

Official website of Troy

Official Website

Demographics

The population of Troy increased by 4.91% in 10 years.

Year	Population	% Change	Method
2010	9,888	-	census
2011	9,966	0.78%	estimation process
2012	9,971	0.05%	estimation process
2013	10,008	0.37%	estimation process
2014	10,017	0.09%	estimation process
2015	10,050	0.33%	estimation process
2016	10,110	0.59%	estimation process
2017	10,204	0.92%	estimation process
2018	10,276	0.7%	estimation process
2019	10,361	0.82%	estimation process
2020	10,399	0.37%	estimation process

Troy zip code is 62294. County name: Madison, County fips: 17119

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Nearby Schools and Colleges

Schools and campuses linked to Troy, IL. Select a name to open its map and contact details.

Code	Name	City	ZIP
149231	Southern Illinois University-Edwardsville	Edwardsville (IL)	62026-1259

Nearby Transit Stations (8)

Rail and bus stations connected to Troy, IL. Select a station to open its map and address details.

Code	Name	Address	Type
ALN	Alton	3400 College Ave.	RAIL
STL	Gateway Transportation Center	551 South 16th St.	RAIL
KWD	Kirkwood	110 West Argonne Dr.	RAIL
CRV	Carlinville	128 Alton Rd.	RAIL
CEN	Centralia station	108 East Broadway	RAIL

Nearby Post Offices

Closest post offices linked to Troy.

Post Office Name	City	ZIP
Troy Post Office	Troy (IL)	62294

Other places with the same name (20)

Troy, Michigan The most populous city in Oakland County, Michigan. with a population of 83,589 people.
Troy, New York The most populous city in Rensselaer County, New York. with a population of 48,804 people.
Troy, Ohio city in Miami County, Ohio, United States with a population of 26,473 people.
Troy, Alabama city in Pike County, Alabama, United States with a population of 18,762 people.
Troy, Missouri city in Lincoln County, Montana, USA with a population of 13,341 people.
Troy, North Carolina city in North Carolina, United States with a population of 3,293 people.
Troy, Wisconsin township in Walworth County, Wisconsin with a population of 2,376 people.
Troy, Texas city in Bell County, Texas with a population of 2,191 people.
Troy, New Hampshire town in Cheshire County, New Hampshire, United States with a population of 2,117 people.
Troy, Vermont town in Vermont, USA with a population of 1,519 people.
Troy, Tennessee town in Tennessee, United States with a population of 1,328 people.
Troy, Pennsylvania borough in Pennsylvania with a population of 1,229 people.
Troy, Maine town in Waldo County, Maine, United States with a population of 1,053 people.
Troy, Montana city in Lincoln County, Montana, USA with a population of 982 people.
Troy, Idaho city in Latah County, Idaho, United States with a population of 895 people.
Troy, Indiana town in Indiana, United States with a population of 403 people.
Troy, Minnesota human settlement in United States of America with a population of 243 people.
Troy, Kansas city in Kansas, United States with a population of 117 people.
Troy, South Carolina town in South Carolina, United States with a population of 101 people.
Troy, South Dakota human settlement in South Dakota, United States with a population of 59 people.

Other cities in Madison County

Cities, towns, neighborhoods & other populated places in Madison County , IL. (more)

City Name	Population	Title
Upper Alton	29,251	City in Madison County, Illinois, United States of America
Alton	26,049	City in Madison County, Illinois, United States
Granite City	25,662	Township in Madison County, Illinois
Edwardsville	25,189	City in Madison County, Illinois, United States
Collinsville	24,217	City in Illinois
Godfrey	17,393	Village in Madison County, Illinois, United States
Glen Carbon	12,887	Village in Illinois, United States
Nameoki	12,056	Township in Madison County, Illinois
Highland	10,017	City in Madison County, Illinois, United States
Wood River	10,002	City in Illinois, United States
Bethalto	9,201	Village in Illinois
Maryville	7,959	City in Illinois, United States of America
Newport	6,630	Neighborhood in Madison, Illinois, USA
East Alton	5,922	City in Illinois, United States of America
Pontoon Beach	5,655	Town
Rosewood Heights	4,038	Census designated place

Distance to Other Cities

Troy distances to largest Illinois cities