I think a lot of that was until 1957 the Cardinals were the furthest team west in the U.S. Then add in KMOX radio in St.Louis. KMOX's night time coverage goes all over the US, plus radio stations from all of those places carried those games. It doesn't hurt that the Cardinals have had a lot of really good teams.The footprint of the fanbase is huge, running all the way to south of Des Moines in the North, past Columbia to the west, and down to Western Tennessee, Oklahoma, Southern Illinois and Indiana. Arkansas and Louisiana to the far South. Just a huge footprint of the country, and for years, many planned their family vacation on a trip to St. Louis to see the Cardinals.
