Your best bet is to go to a Tourist Information Centre for the numerous campgrounds around Edmonton. There are a few that are within the city limits but most are outside Edmontons boundry but still very available to Edmonton.
Here are a few campgrounds close to the city. There are more these are just what spring to mind
Shakers Acres
21530-103 Ave
Phone: 447-3564
Open Year round
Location: Western city limits at Winterburn Road, exit off Hwy 16A.
Rainbow Valley Campground
Open Mid April – Oct 11th
Location: Whitemud Park 1 block south off Whitemud freeway on 122 St
Phone: 434-5531
Campers Village
Large store to display the latest in camping gear or your need for more information as to what you need to know,
10951-170 Street
Phone: 484-2700
www.campers-village.com
Hours: Mon, Tues, Wed, Fri : 9:30am-6pm
Thur : 9:30am-9pm
Sat : 9:30am-6pm
Sun : 11am-5pm