There is a Campground next to the River on the west side of town just a few blocks from the Train Depot. I don't know the name of it though, drove in there, but wasn't camping that trip. Took our Daughter to Ride the Polar Express a few years back, she loved it. Awesome trip to the North Pole, Even shook hands with Santa himself !!
I took my little guy this year to the polar express and we stayed at Bear Hunter. Full hookup right on the river and you get to see the train go back a forth several times at night. I think it was $25 a night, and we were in a Class C. For the money and location, it was not that bad.