If you mean Jackson Hole, Wyoming, we always use Gros Ventre campground. it's eleven miles north. Turn off 191 toward Kelly, from Jackson Hole. Great place, reasonable.
__________________ Myron "A billion here, a billion there...add it all up and before you know it you're talking real money." Everett Dirkson
We have stayed at the Coulter Village RV park in Grand Teton NP. The sites are spaced wide apart, and with full hookups. We have reserved a site for our trip this year in July.