Jefferson County Lake

Easy online reservations, level concrete pads with electricity and water. Clean pit toilets. Great, clear lake. For our preferences, it had too much interstate road noise and too many people. To be fair, though, we stayed over on a beautiful Saturday, and the park seems to be popular with the locals.

We just discovered this campground because we drove by it. I have no idea why it never comes up when you do a Google search for campgrounds near Rexburg. We are so glad we found it. It's by far the most beautiful RV campground in the whole area. Each spot has a concrete pad, a fire ring and a picnic table. It has water and electric but no sewer or dump station. However, Lakeside RV a block away has a dump station for $5 and there is a Sinclair nearby that also has a dump station for $5 and they refill propane tanks and I hear they have the best prices around. It's 10 minutes south of Rexburg. You can stay as long as you want but you can only book for 6 nights in a row in one spot. Then you can book another 6 nights at a different spot. We stayed for 11 nights. They have pit toilets that are surprisingly clean and don't smell, but no shower or laundry. We stayed in sites 8 and 12 and both were wonderful with shade trees and a beautiful view. I loved waking up in the morning to see a beautiful lake out my bedroom window. The lake is actually an aquafer (underground spring) so it's super clear and clean unlike most lakes. One side of the lake has a beach and my kids and I swam in the lake and they especially loved the big slide in the middle of the lake. We floated with tubes and noodles. They have kayaks and paddleboats to rent for $15 an hour. There is a walking path around the campground and a lovely little river that travels alongside the walking path. Each year in September they have Buddies Not Bullies event on the beach. We happened to be her for the event. They had lots of old cars and cool cars and you can vote on your favorites. My boys loved the burnout contest. They had music, a free bounce house for kids, food trucks, free HotWheels for kids, and the radio station was here.  My kids thought it was fun. The campground closes for the winter in October but they leave the walking trail open. $30 a night was cheaper than any other place around and this campground is far more beautiful than any other one in the area. Definitely will be back.

Love this campground -$30 for an RV, water and power (no dump), lakeside spots, and plenty of shade.

We've stayed here twice in the same tent site because we loved it. Very fun wood park for the kids, and the lake access is included in the camping reservation. Our site had running water and a nearby creek. Great place!

Stayed at a tent spot. Campground was clean and maintained. The only reason I gave it 4 stars is because it is near the Highway and you can hear the road noise.

A super fun place!!

Our family stayed here in a tent trailer for 2 nights. Kids loved playing in the lake. I like the paved trail that goes around the lake for jogging and cycling.

This lake has a triathlon that happens every year in mid-July. I’ve done it 4 times. It’s just a great lake + campground.

Let me preface this by saying that we have often found diamonds in the rough at county park campgrounds but are not finding this to be the case (at least so far) in Idaho. Situated on a lake, many of the “interior” sites are right on the lake, with direct lake access. The good news is that at 6 pm on a Sunday, the entrance booth was still staffed, although they could not tell us which sites were available. Instead, they told us to drive around and come back with several choices. There were several waterfront sites available and many of the ones across the street were vacant. This was our second attempt at finding a place to land for the night, but after taking a drive around, we decided to keep looking as this type of campground attracted more of the loud, partying, ATV driving type, which is not our crowd. However, in deference to those who prefer this type of campground, I am giving it three stars. 50 sites but only two pit toilets (plus a third by the beach). A few waterfront sites looked empty as were most of the sites on the other side of the road. Be forewarned that sites 39, 40, 43, 44, 47, and 48 back right up to Highway 20 so you will definitely hear road noise. If you like this type of campground, go for it; it was not our cup of tea!