Village in LaSalle County, Illinois · 6 sq mi · 386 people per sq mi
About 2,300 people live in Seneca. The typical household earns $86,830, and the median resident is 35.5 years old.
2026 projection
From 2,347 in 2020
Poverty rate 22.16%
Men 34.9 · Women 35.7
2010–2026
2,301
2026 projection
2% since 2020 (decrease)
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
2,301
2026 projection
2% since 2020 (decrease)
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 | 2,301 | -9 | 0.39% |
|---|---|---|---|
| 2025 | 2,310 | -4 | 0.17% |
| 2024 | 2,314 | -2 | 0.09% |
| 2023 | 2,316 | +1 | 0.04% |
| 2022 | 2,315 | -25 | 1.07% |
| 2021 | 2,340 | -7 | 0.30% |
| 2020 | 2,347 | +106 | 4.73% |
| 2019 | 2,241 | -2 | 0.09% |
| 2018 | 2,243 | -7 | 0.31% |
| 2017 | 2,250 | -11 | 0.49% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 25 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 5 residents
51% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 51% | 47% | 57% |
| Never married | 27% | 33% | 20% |
| Divorced | 14% | 12% | 16% |
| Widowed | 4% | 1% | 8% |
| Separated | 4% | 8% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau