City in Madison County, Illinois · 6.2 sq mi · 1,921 people per sq mi
About 12,000 people live in Troy. The typical household earns $112,434, and the median resident is 35.2 years old.
2026 projection
From 11,433 in 2020
Poverty rate 1.99%
Men 34.2 · Women 37.3
1880–2026
11,986
2026 projection
4.8% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1880–2026
11,986
2026 projection
4.8% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 11,986 | +93 | 0.78% |
|---|---|---|---|
| 2025 | 11,893 | +86 | 0.73% |
| 2024 | 11,807 | +103 | 0.88% |
| 2023 | 11,704 | +81 | 0.70% |
| 2022 | 11,623 | +100 | 0.87% |
| 2021 | 11,523 | +90 | 0.79% |
| 2020 | 11,433 | +1,072 | 10.35% |
| 2019 | 10,361 | +85 | 0.83% |
| 2018 | 10,276 | +72 | 0.71% |
| 2017 | 10,204 | +94 | 0.93% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 116 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 50 residents
61% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 61% | 68% | 55% |
| Never married | 24% | 23% | 25% |
| Divorced | 12% | 7% | 15% |
| Widowed | 3% | <1% | 5% |
| Separated | <1% | 1% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau