campgrounds around Zion national park

Here's Zion's web site with camping information and other good information. Watchman campground in the park has electric and a dump station with water fill. It's much better to stay in the park itself.

http://www.nps.gov/zion/index.htm

Might be a little late to get anything in the park. March is an incredibly popular time and you're looking at Spring Break time. And arriving on a Friday, there's slim hopes even for a first-come first-served campsite at South Campground. Don't know about the private CG's near the entrance, but I'm guessing availability might still be a problem, esp. since you're looking at a weekend.

Might be to late but they are right outside the gate.

Zion camping

A way you can find them also is just pull up on Google "Zion" and then put rv parks or campgrounds and it will show you all around the area on the map

Zion RV and campground. 1/4 mile
to entrance from Mt Carmel. Our spot. This park is very different in its set up. 10 minutes to Zion entrance. This is a full hook up 50amp site.

We stayed at Zion River RV. Very well maintained park reasonably close to the park entrance. FHU,pool,nice store.