Troy, IL Demographics

A map of Troy's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	10,355	9,603	88.9%	87.6%
Multiracial	623	568	5.3%	5.2%
Hispanic	424	357	3.6%	3.3%
Black	148	272	1.3%	2.5%
Asian	78	100	0.7%	0.9%
Native American/Other	19	60	0.2%	0.5%

Troy, Illinois has an estimated population of 11,647, an increase from the 10,960 recorded in the 2020 Census. The population is 88.9% White, 5.3% Multiracial, 3.6% Hispanic, 1.3% Black, 0.7% Asian, and 0.2% Native American/Other. This demographic dot map shows the population of Troy, with one dot drawn for each person counted by the Census, color-coded by race.

Troy has become less racially diverse since the 2020 Census. It is considerably less diverse than Illinois overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Troy, that probability was 22.8% in 2020 and 20.5% in the most recent ACS estimates.

Troy is ranked the 202nd most populous place in Illinois, out of 1,461 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Troy was ranked the 212th most populous place in the 2020 Census.

Troy's White Population

10,355 residents of Troy, or 88.9% of the population, identify as White. The share of White residents in Troy is significantly higher than in Illinois overall, where 58.1% of the population is White. Troy ranks 914th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Troy's White population has grown by an estimated 7.8%. White residents' share of Troy's population has increased from 87.6% to 88.9%.

Troy is more White than neighboring Maryville (85.8% White), Glen Carbon (81.8% White), Edwardsville (84.5% White), and Collinsville (70.6% White). Troy is less White than neighboring St. Jacob (92.2% White).

Troy's Black Population

148 residents of Troy, or 1.3% of the population, identify as Black. The share of Black residents in Troy is considerably lower than in Illinois overall, where 13.3% of the population is Black. Troy ranks 326th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Troy's Black population has declined by an estimated 45.6%. Black residents' share of Troy's population has decreased from 2.5% to 1.3%.

Troy is more Black than neighboring St. Jacob (0% Black). Troy is less Black than neighboring Maryville (5.4% Black), Glen Carbon (9.3% Black), Edwardsville (7.4% Black), and Collinsville (16.1% Black).

Troy's Asian Population

78 residents of Troy, or 0.7% of the population, identify as Asian. The share of Asian residents in Troy is lower than in Illinois overall, where 5.9% of the population is Asian. Troy ranks 410th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Troy's Asian population has declined by an estimated 22.0%. Asian residents' share of Troy's population has remained roughly unchanged at 0.7%.

Troy is more Asian than neighboring St. Jacob (0% Asian). Troy is less Asian than neighboring Maryville (2.3% Asian), Edwardsville (1.6% Asian), and Collinsville (1.2% Asian).

Troy's Hispanic Population

424 residents of Troy, or 3.6% of the population, identify as Hispanic. The share of Hispanic residents in Troy is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Troy ranks 704th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Troy's Hispanic population has grown by an estimated 18.8%. Hispanic residents' share of Troy's population has remained roughly unchanged at 3.6%.

Troy is more Hispanic than neighboring Maryville (2.8% Hispanic), Glen Carbon (2.1% Hispanic), Edwardsville (3.5% Hispanic), and St. Jacob (1.1% Hispanic). Troy is less Hispanic than neighboring Collinsville (6.7% Hispanic).

Troy's Native American/Other Population

19 residents of Troy, or 0.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Troy is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Troy ranks 447th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Troy's Native American/Other population has declined by an estimated 68.3%. Native American/Other residents' share of Troy's population has remained roughly unchanged at 0.2%.

Troy is more Native American/Other than neighboring Maryville (0% Native American/Other), Glen Carbon (0% Native American/Other), and Collinsville (0% Native American/Other). Troy is less Native American/Other than neighboring Edwardsville (0.4% Native American/Other), and St. Jacob (3.1% Native American/Other).

Troy's Multiracial Population

623 residents of Troy, or 5.3% of the population, identify as Multiracial. The share of Multiracial residents in Troy is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Troy ranks 219th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Troy's Multiracial population has grown by an estimated 9.7%. Multiracial residents' share of Troy's population has remained roughly unchanged at 5.3%.

Troy is more Multiracial than neighboring Maryville (3.7% Multiracial), Edwardsville (2.5% Multiracial), and St. Jacob (3.6% Multiracial). Troy is less Multiracial than neighboring Glen Carbon (6.1% Multiracial), and Collinsville (5.5% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.