Apartments For Rent In Iroquois County Il . Find your next iroquois county apartment. See all 1 apartments in iroquois county currently available for rent. 619 S Belmont Ave, Watseka, IL 1 Bed, 1 Bath SingleFamily Home 18 from www.trulia.com The median rent for the county is $610 a month. Each apartments.com listing has verified availability, rental rates, photos, floor plans and more. Below are 10 affordable housing resources and apartments for rent in iroquois, il county.