City in Piatt County, Illinois · 3.9 sq mi · 1,572 people per sq mi
About 6,100 people live in Monticello. The typical household earns $99,449, and the median resident is 43.8 years old.
2026 projection
From 5,947 in 2020
Poverty rate 5.73%
Men 41.1 · Women 47.3
1850–2026
6,095
2026 projection
2.5% 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.
1850–2026
6,095
2026 projection
2.5% 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 | 6,095 | +15 | 0.25% |
|---|---|---|---|
| 2025 | 6,080 | +70 | 1.16% |
| 2024 | 6,010 | -9 | 0.15% |
| 2023 | 6,019 | +39 | 0.65% |
| 2022 | 5,980 | -22 | 0.37% |
| 2021 | 6,002 | +55 | 0.92% |
| 2020 | 5,947 | +386 | 6.94% |
| 2019 | 5,561 | 0 | 0.00% |
| 2018 | 5,561 | +1 | 0.02% |
| 2017 | 5,560 | -20 | 0.36% |
Showing 10 of 33 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 63 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 17 residents
61% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 61% | 64% | 58% |
| Never married | 24% | 25% | 24% |
| Divorced | 10% | 9% | 11% |
| Widowed | 5% | 2% | 8% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau