CG Custer, SD

beaver lake gets my vote.

I will add we were up there a week ago and stayed at Buffalo Ridge. It is the old Flinstones place. they are redoing it and it is really pretty nice and lots of room for big rigs and dogs. Because they are new they might still have spots left.

I could not find there website but ended up booking through this black hills vacations site. not the best deal but it is an option.

https://www.blackhillsvacations.com/places-to-stay/campgrounds-rv-parks/supplier/655355-Buffalo-Ridge-Camp-Resort

We've stayed at Beaver Lake & Custer's Gulch. Liked them both, but think I'd put them in order of preference - 1. BL 2. CG

If you are going to be there soon, you may not find anything as the Stirgis Rally is going on for the next two weeks...everything sold out

I90 isn't that close to Custer..... You need to go a bit further south down 16 or you will wind up driving a TON.

There are more campgrounds out there than you realize, they just dont get online for whatever reason, which makes our lives difficult.

I can confirm, Rafter J's is very nice and had everything we desire in a campground, while being very near every popular site in the are. But there were plenty more we saw that looked nice...just so hard to find if you're not actually there!

Custer's Gulch campground. Very nice, clean and friendly folks running it.

We liked RafterJ at Hill City

RafterJ Resort.

Beaver Lake campground is nice.