Business is up significantly this year at many campgrounds across northern Arizona in what is shaping up to be the busiest summer in years, according to a release.

“We’ve been full every night since June 5,” said Jo Ann Mickelson, co-owner of J & H RV Park in Flagstaff and executive director of the Arizona Association of RV Parks & Campgrounds (ARVC), which hosts GoCampinginArizona.com, the travel planning website.

Mickelson, whose park caters travelers as well as desert residents who spend the summer in Flagstaff’s cooler climes, said her park filled up as soon as it started hitting 112 or 113 degrees in the Phoenix area.

Other northern Arizona parks have also reported unusually strong business this year.

“We’re seeing a pretty strong pickup in domestic travel,” said Clint Bell, whose family operates the Grand Canyon KOA in Williams as well as the Flagstaff KOA. “I think people are getting out to explore the nation a little more.”

Bell noted that the northern Arizona campground business is unique because it not only draws people touring the region’s national parks, but it serves as a major travel corridor for people who are migrating east or west or going north or south with the seasons.

He noted that the Flagstaff KOA is not only drawing more visitors who are bound for Grand Canyon, Wupatki National Monument and Walnut Canyon, but Phoenix area residents who are looking to escape the desert heat.

The Flagstaff and Williams KOAs are also drawing more business by installing 400-square foot Cavco park model cabins. The rental units, which include full size kitchens and lofts, enable the campgrounds the accommodate people who don’t have RVs or tents, but want to enjoy and outdoor camping experience.

Other facilities seeing an uptick in bookings include:

• Business was up 43% during the first quarter of this year at the Grand Canyon KOA and the park’s summer business is expected to be well above 2014 figures, which were 27 percent over 2013 levels.

Grand Canyon Railroad RV Park in Williams, which caters to people taking Western-themed train rides to the South Rim, reported the busy summer season started earlier than normal this year.

• Business has also been stronger than last year at Kaibab Camper Village, which is located off Highway 67 near Jacob Lake, roughly 45 miles from the North Rim of the Grand Canyon.

For more information on campgrounds, RV parks and resorts in Arizona, please visit GoCampingInArizona.com.