City park campground in Pelican Rapids, Minnesota, has 30 sites (20 tent-only, 10 RV/tent) for less than $20 per night. Campground is open mid-May to mid-September. Amenities include hot showers, flush toilets, and RV dump station. Pets allowed.
Web Site: http://www.exploreminnesota.com/lodging/listing.aspx?EntityId=1452&stchr=s