Troy, IL Profile: Facts & Data


Troy Local Links & Resources:
Resources | ALL Troy Content
Planning to visit Troy? See Local Hotels

Also See: Troy, IL ZIP Codes & ZIP Code Maps

Troy, Illinois - Basic Facts

Quick & Easy Tools

The City of Troy had a population of 11,124 as of July 1, 2022. Troy ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Troy is located at latitude 38.7292 and longitude -89.8832 in Madison County. The formal boundaries for the City of Troy encompass a land area of 5.29 sq. miles and a water area of 0.06 sq. miles. Madison County is in the Central time zone (GMT -6). The elevation is 564 feet.

The City of Troy has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Troy is located within Township of Jarvis, a minor civil division (MCD) of Madison County.

Alternate Unofficial Names for Troy: Columbia.

Jump to... (On This Page!)
  1. Troy 2022 Demographic Data
  2. Growth Rates for Troy (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Illinois Research Tools (Easy Tools & Current Data)
  3. Illinois Data Comparison Tool - 2022 Demographics

Troy, IL Data & Demographics (As of July 1, 2022)


Total Population 11,124 (100%)
Population in Households 11,013 (99.0%)
Population in Families 9,310 (83.7%)
Population in Group Quarters1 111 ( 1.0%)
Population Density 1,979
Diversity Index2 27


Median Household Income $92,565
Average Household Income $116,339
% of Income for Mortgage4 13%
Per Capita Income $44,922
Wealth Index5 119


Total HU (Housing Units) 4,548 (100%)
Owner Occupied HU 3,342 (73.5%)
Renter Occupied HU 974 (21.4%)
Vacant Housing Units 232 ( 5.1%)
Median Home Value $232,930
Average Home Value $251,615
Housing Affordability Index3 174


Total Households 4,316
Average Household Size 2.55
Family Households 3,056
Average Family Size 3.00
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2020-2022 2022-2027
Population 0.66% -0.16%
Households 0.09% -0.02%
Families   -0.10%
Median Household Income   2.67%
Per Capita Income   3.40%
Owner Occupied HU   0.20%

Troy, IL - Peer Comparisons by Rank and Percentile

The table below compares Troy to the other 1,466 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2022 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 207 86th
Population Density # 253 83rd
Median Household Income # 237 84th
Housing Affordability Index # 673 46th
Per Capita Income # 257 83rd
Diversity Index # 537 64th

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.

Troy, IL - Most Popular Things to Do

Also See: Nearby Hotels | Driving Directions

Use HTL Address Research for a Illinois Address and get...

Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2022, data includes home values, household income, percentage of homes owned, rented or vacant, etc.

Quick & Easy Ways to...

  1. Get Current Demographic Data for Cities, Towns, and ZIP Codes
  2. View Boundary Maps, for Cities, Towns, and ZIP Codes
  3. Locate Physical, Cultural, and Historical Features

Illinois Census Data Comparison Tool

Compare Illinois July 1, 2022 Data
Highest or Lowest: