What was up with all the Wisconsin references?

Was Dan or any of the other major writers from Wisconsin? Cause they seem to mention it on several occasions throughout the series.

iNevel: The food delivery guy who interrupts the show says he’s from Wisconsin

iGive Away a Car: When Sam and Freddie go to the dealership to pick up Nevel’s car, they say to the owner, “We’re from iCarly” to which he responds, “Oh yeah? Well, I’m from Wisconsin.”

iFind Lewbert’s Lost Love: When Spencer catches Chuck stealing the tv remotes, Chuck’s excuse is that he’s doing laundry for the Harlinson-Chester’s “while they’re in Wis-con-sin”

iDo: The wedding takes place in Wisconsin

I forgot which episode but in season one, Carly starts the web show with “Hello people of Earth and all of Wisconsin!”

Those are all the ones I can name at the top of my head, but I know there’s more, I’ll edit them in if I remember them. But does anyone know why they did this? I always found it funny, but random at the same time.