Population 14,107 · Census ACS 2020–24
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Population and households in Troy
Household size in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.73 | 2.52 | 2.69 | 2.68 |
| 2010–14 | 2.78 | 2.53 | 2.71 | 2.73 |
| 2015–19 | 2.60 | 2.49 | 2.66 | 2.71 |
| 2020–24 | 2.70 | 2.46 | 2.58 | 2.65 |
| Change | −0.03 | −0.06 | −0.11 | −0.03 |
At 2.70 people per household, Troy sits close to the national average of 2.65. The typical household here is bigger than in the St. Louis area overall, where it has 2.46 people. The biggest households, usually families with children, are concentrated in the southwest.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 37.9 | 38.5 | 37.6 | 37.7 |
| 2010–14 | 37.7 | 39.5 | 38.5 | 38.6 |
| 2015–19 | 40.4 | 40.7 | 39.6 | 39.6 |
| 2020–24 | 38.6 | 40.8 | 40.2 | 40.1 |
| Change | +0.8 | +2.3 | +2.6 | +2.3 |
Half of the people in Troy are younger than 38.6 and half are older, close to the national median of 40.1. The population here is younger than in the St. Louis area overall, where the median age is 40.8. Since 2006–10, the median age has crept up from 37.9, a smaller shift than nationally.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.3% | 11.7% | 11.7% | 12.3% |
| 2010–14 | 10.0% | 11.5% | 11.7% | 12.3% |
| 2015–19 | 7.5% | 11.0% | 11.1% | 11.6% |
| 2020–24 | 9.9% | 11.1% | 11.3% | 11.6% |
| Change | +1.5 pts | −0.6 pts | −0.4 pts | −0.6 pts |
Single parents head about one in ten households in Troy (9.9%), a little below the national share of 11.6%. Since 2006–10, the single-parent share has risen 1.5 points, even as the national share fell.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Troy
Renters in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 18.7% | 28.3% | 30.8% | 33.3% |
| 2010–14 | 24.8% | 30.1% | 33.1% | 35.6% |
| 2015–19 | 21.2% | 31.1% | 33.9% | 36.0% |
| 2020–24 | 17.8% | 29.6% | 32.9% | 34.8% |
| Change | −0.9 pts | +1.4 pts | +2.1 pts | +1.5 pts |
Only 17.8% of households in Troy rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 28.3% have no mortgage at all, well below the national share of 39.8%. Rentals cluster in the center; owners are most common in the southwest. Since 2006–10, the renter share has edged down 0.9 points, even as the national share rose.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.5% | 9.6% | 10.0% | 11.4% |
| 2010–14 | 3.3% | 10.1% | 10.1% | 11.4% |
| 2015–19 | 3.5% | 10.1% | 9.8% | 11.1% |
| 2020–24 | 8.5% | 8.8% | 8.1% | 9.6% |
| Change | +3.0 pts | −0.8 pts | −1.9 pts | −1.8 pts |
Vacancy in Troy is close to the national rate: 8.5% of homes are empty, against 9.6%. Since 2006–10, vacancy has risen 3.0 points, even as the national rate fell.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 1988 | 1972 | 1966 | 1974 |
| 2010–14 | 1989 | 1972 | 1967 | 1975 |
| 2015–19 | 1992 | 1973 | 1968 | 1977 |
| 2020–24 | 1991 | 1975 | 1970 | 1980 |
| Change | +3 | +3 | +4 | +6 |
Much of the housing in Troy is relatively new: half of its homes were built after 1991, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1988 in 2006–10, a sign of steady new building. Newer construction is concentrated in the west, while the center has the oldest housing.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | $895 | $825 | $953 | $965 |
| 2010–14 | $895 | $920 | $1,028 | $1,040 |
| 2015–19 | $1,055 | $1,010 | $1,165 | $1,213 |
| 2020–24 | $1,194 | $1,239 | $1,428 | $1,571 |
| Change | +$299 | +$414 | +$475 | +$606 |
Rent in Troy runs $1,194 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $299 a month from 2006–10, a 33% rise, a slower climb than the nation's. Rent takes 24.3% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. Rents run highest in the southwest and lowest in the center.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Troy
Bachelor's degrees in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 27.4% | 30.3% | 31.2% | 28.4% |
| 2010–14 | 26.8% | 32.1% | 32.4% | 29.6% |
| 2015–19 | 36.5% | 34.9% | 34.7% | 32.1% |
| 2020–24 | 44.7% | 38.5% | 37.7% | 35.6% |
| Change | +17.3 pts | +8.3 pts | +6.5 pts | +7.2 pts |
More than four in ten adults 25 and older in Troy (44.7%) have a bachelor's degree or higher, above the national share of 35.6%. Since 2006–10, the share with a degree has risen 17.3 points, mirroring the country. College graduates are most concentrated in the northeast and least in the center.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 91.8% | 88.8% | 86.3% | 84.9% |
| 2010–14 | 95.5% | 90.5% | 87.5% | 86.1% |
| 2015–19 | 95.6% | 92.1% | 89.1% | 87.7% |
| 2020–24 | 97.6% | 93.6% | 90.3% | 89.3% |
| Change | +5.8 pts | +4.8 pts | +4.0 pts | +4.3 pts |
Finishing high school is nearly universal in Troy: 97.6% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Since 2006–10, the share with a diploma has risen 5.8 points, as it has nationally. Of the 388 Illinois cities with 5,000+ people, only 27 have a higher share of high school graduates.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Troy
| Period | Troy | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.2% | 7.7% | 8.7% | 8.1% |
| 2010–14 | 8.0% | 8.8% | 10.2% | 9.4% |
| 2015–19 | 2.4% | 4.9% | 6.1% | 5.6% |
| 2020–24 | 3.9% | 4.3% | 6.0% | 5.4% |
| Change | −0.3 pts | −3.4 pts | −2.7 pts | −2.7 pts |
Jobs have been easier to find in Troy than nationally: unemployment was 3.9%, against 5.4%. That is in line with the rest of the St. Louis area. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Troy compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Troy | 2.70 | 38.6 | 9.9% | 17.8% | 8.5% | 1991 | $1,194 | 44.7% | 97.6% | 3.9% |
| Kuhn Station | 3.04 | 42.1 | 3.7% | 2.9% | 6.9% | 2000 | $1,044 | 52.1% | 99.2% | 4.9% |
| Lumaghi Heights | 2.71 | 49.1 | 5.3% | 5.1% | 5.3% | 1993 | $1,319 | 47.8% | 96.0% | 1.5% |
| Maryville | 2.36 | 46.5 | 5.0% | 20.7% | 3.6% | 1991 | $1,086 | 42.9% | 97.1% | 4.0% |
| St. Jacob | 2.79 | 37.0 | 5.2% | 9.2% | 6.8% | 1991 | $1,150 | 45.1% | 96.4% | 0.9% |
| Glen Carbon | 2.41 | 41.3 | 7.4% | 28.7% | 3.6% | 1989 | $1,112 | 53.0% | 97.2% | 3.7% |
| Collinsville | 2.31 | 39.3 | 12.7% | 31.1% | 8.0% | 1970 | $1,044 | 30.6% | 92.9% | 4.1% |
| Meadow Heights | 2.49 | 48.9 | 8.9% | 10.4% | 8.6% | 1993 | $1,300 | 37.8% | 92.9% | 2.1% |
| Fruit | 3.08 | 40.2 | 4.3% | 6.3% | 5.7% | 1996 | $1,017 | 50.6% | 99.2% | 3.8% |
| Edwardsville | 2.52 | 35.1 | 7.1% | 29.4% | 8.3% | 1980 | $1,329 | 54.4% | 97.9% | 4.5% |
| Marine | 2.76 | 36.0 | 8.0% | 14.1% | 4.3% | 1979 | $980 | 30.8% | 96.7% | 3.0% |
All figures 2020–24.
Cities with similar populations: Kingston, MA · Sellersville, PA · Selinsgrove, PA · San Marino, CA · Loomis, CA · Lincolnwood, IL · Leon Valley, TX · Leitchfield, KY · Lake Wylie, SC · Lafayette, TN
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Troy. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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