Hey there...
Here are some Tucson RV camping resources to check out...
If you were wanting to camp in a public camp ground I would recommend Gilbert Ray Camp Ground in the Tucson Mountain Park...it's run by Pima County, has electricity, water and dump station available but no water or sewer hookups, unfortunately, but the surroundings are great. It is on the west side of the Tucson Mountains, so it is a ways to Tucson, but not too bad, and you are really out from town in a beautiful desert setting.
NRPR - Gilbert Ray Campground
Catalina State Park is very close in to Tucson on north Oracle Road near Ora Valley and the NW side... there are water & electric hookups, no sewer hookups...water & dump station available...
Catalina State Park
Here are the websites or phone numbers for several Tucson area privately run RV parks...check them out...I'm sure you'll find something that is to your liking. (Some are 55+)
Prince of Tucson
Prince of Tucson RV Park
Rincon Country RV Resorts (Two: East & West)
Rincon Country RV Resorts - Your RV Resort in Tucson, Arizona
Voyager RV Resort
(800)424-9191
Voyager RV Resort home page
Far Horizons Tucson Village RV Resort
(800)480-3488
Western Way RV Resort
(800)292-8616
Desert Puebo Hoto Home Park
Desert Pueblo Mobile Home Park, Tucson, Arizona
Desert Trails RV Park
Desert Trails RV Park Tucson Arizona
Beaudry's RV Resert & Rally Park (This is a service center with an RV park as well.)
(877)694-9176
Crazy Horse RV Park
(800)279-6279
Tra-Tel Tucson RV Park
(520)888-5401
Tucson Meadows
(520)298-8024
Whipsering Palms RV Park
(800)266-8577
Miracle RV Park
(888)624-0142
El Frontera Motor Home Park
(520)887-6369
Mission View RV Park
(800)444-VIEW
South Forty RV Ranch
(520)297-2503
Desert Rails RV Park
(520)883-8340
The private ones are from Woodall's and Trailer Life Directory. I can't vouch for any of those, but some of them look pretty nice... My favorite is Gilbert Ray.
Good Luck and enjoy your time in Tucson!