Wonderful trails and mountain views, I have been there 2 times in the last 10 years…
The Trampas Trailhead campground gets 4 stars not because it's a great campground (it's good, don't get me wrong) but because it provides great access to an amazing trail.
I used the Trampas Trailhead campground as a staging area for an overnight to the Trampas Lakes. It's a "short" 2 hours from Albuquerque to the trailhead, so I was able to get up there on a Friday night after work for a Saturday/Sunday overnight at the lakes. The campground isn't exactly "dispersed", but there are no official (as far as I could tell) campsite. Folks have set up rock rings in a number of places and there are a few picnic tables. I could see 4 or 5 campsites, depending on if you group one site that was maybe 100 yards down FR 207.
Access is either from FR 207, a well-maintained dirt road, or FR 639 which requires high clearance, good shocks, and would be difficult after rains because of some muddy areas.