Seneca Illinois About
Seneca Illinois has a zip code of 61360. The current date and time in Seneca is April 30, 2024, 1:52 am and it has a population of 2,995 people. Seneca Illinois lies at an elevation of 509 feet.
Seneca Illinois has a zip code of 61360. The current date and time in Seneca is April 30, 2024, 1:52 am and it has a population of 2,995 people. Seneca Illinois lies at an elevation of 509 feet.