I havent been to Skokie, But I have been to Chicago and I didnt see Chalav Yisroel in Chicago (At least where I was)
And before you tell me Skokie is close to Chicago, remember I am not a local and it would take me 3 or 4 x as long to get to Skokie from Chicago as a Local and when I was in Chicago I didnt have the time to travel from Chicago to Skokie (I think its around 1 hour each way by Subway) I was only in Chicago for 4 days