Village in Mercer County, Illinois · 0.7 sq mi · 720 people per sq mi
About 470 people live in Oak Grove. The typical household earns $40,972, and the median resident is 58.8 years old.
2026 projection
From 471 in 2020
Poverty rate 25.99%
Men 56.6 · Women 62.1
2010–2026
474
2026 projection
0.6% 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.
2010–2026
474
2026 projection
0.6% 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 | 474 | -2 | 0.42% |
|---|---|---|---|
| 2025 | 476 | +10 | 2.15% |
| 2024 | 466 | +2 | 0.43% |
| 2023 | 464 | +1 | 0.22% |
| 2022 | 463 | -4 | 0.86% |
| 2021 | 467 | -4 | 0.85% |
| 2020 | 471 | -115 | 19.62% |
| 2019 | 586 | -1 | 0.17% |
| 2018 | 587 | -3 | 0.51% |
| 2017 | 590 | -2 | 0.34% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 3 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 4 residents
30% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 30% | 28% | 32% |
| Never married | 35% | 37% | 33% |
| Divorced | 27% | 30% | 22% |
| Widowed | 8% | 4% | 13% |
| Separated | 1% | 1% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau