Why Advertise on WCSJ 103.1 or WJDK 95.7? Because almost everyone listens to the radio! Did you know the average American listens to the radio three hours and forty-five minutes every weekday and five hours and fifty-one minutes every weekend? Adults in the United States spend more time with radio between 6 a.m. and 6 p.m. than with any other major medium. No other medium reaches consumers closest to the point of purchase than radio. WCSJ and WJDK are the only commercial radio station in Grundy County, Illinois.WCSJ and WJDK reach residents of all ages in Grundy, Will, LaSalle, and Kendall Counties. WCSJ and WJDK are family owned and operated locally by Grundy County Broadcasters Inc.Advertising your business on WCSJ or WJDK radio will allow you to influence your current and prospective customers all day long where other media can not–at work and in the car. Half of all United States workers have a radio at work. Radio's in–car reach is outstanding as well, reaching more than 87% of commuters each week.For more information on advertising your products and services contact us by filling out the form below or call 815 941 1000 and ask to speak to the manager.