Colorado with kids...

Wow, thank you all for your responses. I looked into Glenwood Springs and also the Mountaindale Cabins and RV Resort. I have inquiries into both of them. Both sound like there is plenty to do with kids and also fun for the adults. The sand dunes look like something that will be fun when they get a little older.

Ah yes....camping with little ones! I remember those days, my kiddos were the same age apart (3 years) and about that age when we were taking them on camping trips in our tent camper.

So. Activities for the kiddos and FHU campground/RV park. For kid friendly camping, it's hard to beat Colorado Springs as a base for activities. There's an abundance of things to see/do that your children may enjoy. Things like:

Cheyenne Mountain Zoo
Pikes Peak Cog Railway (in Manitou Springs)
May Natural History Museum
Cliff Dwellings and Cave of the Winds (close together)
Cripple Creek and Victor Railroad (up in Cripple Creek)
The Canon City/Royal Gorge area (about 45-50 minutes SW of Colorado Springs)
This is just to name a few off the top of my head. H E R E is a link a more complete list of things to see/do in that area. You may want to consider Mountaindale Cabins and RV Resort outside of Colorado Springs as a base camp location. It's a bit out of town, but easy to get to various sights/locations mentioned.

The previous suggestions from others are also very good recommendations. Just depends on where you want to be and how much you want to see, in whatever time you have allotted.

Great Sand Dunes NP is a wonderful place to visit. H E R E is a campground just outside the park that could work for you. There's also a KOA in Alamosa, a bit of a drive, but a good base camp location.

Either place to stay, you could consider going down to Antonito and doing the Cumbres and Toltec Railroad. Did that with my kids (when they are just a bit older than yours) and they loved it. There's also an alligator farm near the Great Sand Dunes, that could be something different for the kiddos AND the parents. H E R E is the link to them.

Whatever you decide, make sure you get your reservations going ASAP. You will need them.

I have a 12 year old and a 3 year old. We enjoyed Colorado Springs.

Pics from Colorado Springs

It's kind of hot there in summer, but Fruita has a wonderful dinosaur museum, very interactive. An earthquake you can be part of, a dino that spits water, all kinds of things kids love. You can camp about a block away by the Colorado River at the state park, which is very nice.

On your way there or back, stop in Glenwood Springs, where I currently live, and take them on the gondola up to Glenwood Caverns, which is very cool, as well as having some crazy rides, like a swing that goes out over the canyon edge. Also rafting here, which would be perfect that time of year, as well as a beautiful bike path along the river - you can rent bikes. Lots to do here that time of year and it's not hot, very nice in summer. You can also hike to Hanging Lake, though it gets crowded. Lots of other places to hike and see nearby. And a few nice campgrounds, Rifle State Park being one, if you don't mind the 25 mile drive to Glenwood. Or try the Hideout in town if you prefer being here. And kids love the Glenwood Hotsprings and there's also a new one in town down by the river, very classy.

THanks for your quick feedback. I will have to check those places out. You hit the nail on the head for what I'm looking for. Before kids, we went for quiet and secluded places to camp. Now, we find campgrounds with activities for the kids.

And thanks for the heads up about the timing. Unfortunately, that's the only window I have due to my bosses lack of consideration for other peoples need to plan things ahead of time.

Fun Valley in South Fork, CO is kid/family oriented.

At that age, I've found that adventure for them is poking around the campground, looking for bugs under rocks, etc. Young children don't really seem to see scenery in the same way adults do. They're more focused close up. So even though you may like to go out and explore, make sure you allot a significant amount of time to places where you sit and let the kids do their thing. And if you're staying in a private CG, I'd make sure I got out every day to the shore of a lake, a small stream, etc.

One park that kids seem to love is Great Sand Dunes NP. Although June is getting a little late, there's an intermittent, very shallow creek that ebbs and flows along the base of the dunes. Sand castles, dams, all the things kids would normally do at a beach.

One other place kids love is St. Elmo ghost town above Nathrop, CO. Yes, a real true ghost town, not some tourist trap. Wooden sidewalks and everything. Across from the little general store is a place where people feed the chipmunks and squirrels. They sell little bags of feed at the store. So you can sightsee and then the kids get to see the little creatures begging for food.

As far as timing, you're picking a very busy time in Colorado. Anything around the 4th of July may be already booked solid.