Best Tent Camping near Riverton, WY

This campground caught my eye when I was on the way to another Dyrt listing. It wasn'tlisted, so I'madding it now. The campground is very small, and I assume mostly used by locals. The sing says it is ran by the Bureau of Land Reclamation, U.S. Department of Interior.
There is a vault toilet, a covered picnic, and a metal fire ring. There's also a small dumpster as you drive in. There's a paved ADA parking spot next to the toilet, and another near the picnic table.
If pushed you could probably fit 5 car/truck campers, but better with no more than 2. Not much room for anything but a small trailer. The fire ring is full of trash and old residue. The highway is just across fence, so its 5 bit noisy.
Not the best site, but a place to spend the night. The sign says camping up to 10 days.

Absolutely beautiful! The scenery is breaking...just don’t inhale a mosquito! This camping area is 4 miles from the Big Sandy Trailhead. We stayed 2 nights here. We hiked over Jackass Pass and into the Cirque of the Towers. That is a sight to see! The fishing was so much fun! So many brook trout and even some cutthroats in Lonesome Lake at the Cirque of the Towers. The bus were pretty bad so make sure you bring Deet. This is a backpacking camping area in. Bear country to make sure you have rope to tie your food up. On the north side of the lake there are some bear boxes provided. We camped near the outlet and there were only fire rings. Some had some makeshift benches out of logs around the fire pits. Fire wood is kind of scarce in the area. Bring a small hatchet if you can. This is worth battling the mosquitos, I promise!

We have stayed in the Sinks yurt system many times, but winter is our favorite. There is electricity, spotty internet and a heater you can turn on. 10 below zero outside and we keep it at about 45-50 deg inside. Super clean, very well maintained. You are required to clean well before you leave. Sleeping on mattresses/bunks or fold out futon mattress. Also inside is a small table and chairs, pine carved furniture. Broom, mop, cleaning supplies are provided. When we have stayed in Winter, no other soul is there. The park plows and shovels before your arrival. The Milky Way is spectacular on a clear night. Photos below are both winter and summer. In the summer, you can hear rocks and boulders rolling in the Popo Agie River (Pronounced "Puh- Po Shuh" (two words). There are 4 yurts that sleep up to 6, and one very large yurt that sleeps 12. Picnic tables, pit toilet, fire ring, trash bin nearby. In the winter, bring your own wood. Many good hikes in summer and a few trails to XC ski or snowshoe in the winter. 

You can shower at the city pool on 9th Street for a small fee.

There are lots of campsites at Boysen State Park. I called the phone number and talked to a nice ranger. She suggested Upper Wind River campsite since we did not have boat and wanted to have a nice tent spot. We camped 1 week before site changed from reservation to FF. We planned on staying 2 nights but it was so relaxing we ended up staying 4. 1 day we went to Marina and swim beach. Another day we went to Thermopolis and checked out Dino museum and hot springs. Last day we just hung around camp and relaxed. Campsite had a park for kids. No showers but plenty of water so we set up privacy tent and we’re able to shower when we wanted. If we were there during peak season I bet it would feel a little crowded but was perfect the time of year we went because there were maybe 10 sites filled out of the 80ish there.

In the Sinks Canyon, this is a nice little campground wedged between the highway and the river and mountains. Campsites are small and close to each other, but level and clean. Each site has the usual picnic table, fire pit, and bear box; but the concerns were less about bears and more about moose. There are Yurts for rent here too. The family I met that had reserved one was really happy with their yurt. There are nice hiking trails on the other side of the river (moose warning signs and all), and some nice trails on the other side of the highway. I’d camp here again even though it is so close to the road because the river drowns out the highway noise. Be careful if you decide to dip your toes in the river; the flow is really fast!! Just down the road about a mile is the Sinks and the Rise, where the Popo Agie River disappears into a cave at the base of the mountain and then miraculously reappears gushing out of the base of a mountain on the other side of the canyon.