I found this on Allstays Pro.
https://www.hamiltoncounty.in.gov/Fa...r-Campground-1
About
: $$, 106 sites, Apr 15-Oct 31, All ages, Tents Only sites: 7, 807 ft elev, Accepts Big Rigs, 62 full hookups, electric, 38 elec-water hookups, 30/50 amp, 12 50 amp sites, tables, grill, water, toilets, showers, dump, laundry, firewood, internet, pet friendly, playground, (C) 4.5 stars with 57 reviews, 22 mins from Carmel. Call them as they opened late last year due to covid. Around $30/night for full hook ups.
Theres a KOA 5 star 45 minutes along I - 69 near Muncie
https://koa.com/campgrounds/muncie/
Not a lot around there. Never been to either. They were the only two on the Allstays map that looked decent.
Good Luck