Tilly’s RV Park Tends to be full with repeat customers from year-to-year but if you contact them well in advance you might find a space is available. Here is their contact information.
Oronoco City Park is located on the River and within walking distance of the show. There are restrooms, a picnic pavilion and a play area for the kids. Phone # 507-367-4405 or 507-367-4526. Camping is $20 per night, no water or electricity hookups are available and this is on a first come -first serve basis.
Here is a list from Good Sam Club with some of the other local campgrounds. The smallest radius they would let us select is 25 miles so be sure to consider that when you call.
And finally here is a list from the Rochester Convention & Visitors Center for Camping.
Here is a link to hotels and motels from the Rochester Convention & Visitors Center.