Campgrounds and RV parks near Mount Vernon, IN

Trail access is a strong draw. Harmonie State Park has hiking, biking, and mountain-bike trails along with summer naturalist programs, and the Wabash River borders the park and supports fishing, canoeing, and kayaking from a boat launch inside the park. Across the river, John James Audubon State Park adds indoor variety. Highlights include the Audubon Museum and Nature Center, a golf course, a recreation lake with fishing and paddle boating, hiking trails through preserved woods, tennis courts, and playgrounds. Day trips are easy. Historic New Harmony offers walkable shops and preserved 19th-century architecture, and Evansville, a short drive east, adds a zoo, riverfront, and full-service groceries for restocking the RV.

The primary camping window runs from spring through mid-fall. The campground season at John James Audubon State Park runs March 15 to November 10, and Kentucky State Parks note that water and other resources cannot be guaranteed during inclement weather months when freezing temperatures are possible, so travelers should contact the park directly before booking a shoulder-season trip. Indiana's Harmonie State Park allows year-round reservations at a handful of sites, but water is typically turned off from November through mid-March or April, and hookups and bathhouses may be limited in the coldest weeks. Spring brings the wettest conditions of the year. April is usually the wettest month in the Evansville area, and the air can feel uncomfortably humid during the summer months of July and August. Plan for storms in April and May and heat management gear in July. Fall is the shoulder favorite: cooler nights, fewer bugs, and river-valley color through late October. Holiday weekends and the Halloween event weekend at Harmonie book out early, so lock in dates as soon as the booking window opens.

Sites vary widely in style. Harmonie's loops sit in rolling wooded terrain with over 200 sites, most with 30-amp electric hookups; only a few offer full hookups, and campers should watch for grade, as some sites have a noticeable incline that matters for leveling a rental RV. Facilities include multiple bath houses and two dump stations. At John James Audubon, the campground is relatively small and sits at the front entrance along Highway 41, with electric and water hookups, a bathhouse, and a dump station, though sites are packed close together and highway noise carries. Expect firewood restrictions at state parks. Kentucky prohibits the importation of firewood by campers from any state outside of Kentucky to help prevent the spread of the Emerald Ash Borer, and Indiana likewise recommends buying local. Bundles are available at park camp stores. Cell coverage is generally reliable across the region, and Evansville is close enough for grocery runs, propane, and dump-station backups if a park's facilities are offline.