Illinois Grundy County LaSalle County
Seneca
A village in Grundy County, Illinois — population 2,217 as of 2020.
Hydrologic Outlook — Hydrologic Outlook issued July 31 at 2:19PM CDT by NWS Chicago IL
Overnight
67°F
Showers And Thunderstorms90% precip
Saturday
71°F
Showers And Thunderstorms87% precip
Saturday Night
66°F
Showers And Thunderstorms Likely65% precip
Sunday
76°F
Mostly Cloudy11% precip
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Seneca by the numbers
Population
2,217Population figure, 2020
Households & income
- Area
- 6.21 sq mi (16.08 km²), 0.37 sq mi water
- Median age
- 35.5
- Households
- 907
- Persons per household
- 2.7
- Median household income
- $86,830
- Median house value
- $227,500
Municipal office
- Office
- VILLAGE TREAS
- Address
- 340 N. CASH, SENECA, IL 61360