| Name of Spa | 2005 Spa Star Rating | 2006 Spa Star Rating |
| Mandarin Oriental New York Spa, New York, NY | 4 | 5 |
| Spa Montage, Laguna Beach, CA | 5 | 5 |
| Alvadora, Spa at Royal Palms , Phoenix, AZ | 4 | 4 |
| Ancient Cedars Spa, Tofino, BC | 4 | 4 |
| Auberge du Soleil, Rutherford, CA | 4 | 4 |
| Bernardus Lodge Spa, Carmel Valley, CA | 4 | 4 |
| Canyon Ranch SpaClub at Gaylord Palms, Kissimmee, FL | 4 | 4 |
| Canyon Ranch SpaClub at The Venetian, Las Vegas, NV | 4 | 4 |
| Emerson Inn & Spa, Mount Tremper, NY | 4 | 4 |
| Four Seasons Hotel New York Spa, New York, NY | 4 | 4 |
| Hualalai Sports Club and Spa, Ka'upulehu-Kona, HI | 4 | 4 |
| Spa at the Ritz-Carlton, South Beach, South Beach, FL | 4 | 4 |
| Post Ranch Inn, Big Sur, CA | 4 | 4 |
| Spa at Four Seasons Resort Aviara, North San Diego, Carlsbad, CA | 4 | 4 |
| Spa at Four Seasons Resort Santa Barbara, Santa Barbara, CA | 4 | 4 |
| Spa at Four Seasons Resort Scottsdale at Troon North, Scottsdale, AZ | 4 | 4 |
| Spa at the Sanctuary, Kiawah, SC | 4 | 4 |
| Spa Bellagio, Las Vegas, NV | 4 | 4 |
| Spa Gaucin, Dana Point, CA | 3 | 4 |
| Spa Grande at Grand Wailea Resort, Wailea, Maui, HI | 4 | 4 |
| Spa Ojai, Ojai, CA | | 4 |
| Spa Palazzo at Boca Raton Resort & Club, Boca Raton, FL | 4 | 4 |
| Spa Suites at Kahala Hotel & Resort, Honolulu, HI | 4 | 4 |
| SpaHalekulani, Honolulu, HI | 4 | 4 |
| SpaTerre at Little Palm Island, Little Torch Key, FL | 4 | 4 |
| Stillwater Spa at Park Hyatt Toronto, Toronto, ON | 4 | 4 |
| The Bachelor Gulch Spa at The Ritz-Carlton, Avon, CO | 4 | 4 |
| The Beverly Hills Hotel Spa by La Prairie, Beverly Hills, CA | 4 | 4 |
| The Carneros Inn Spa, Napa, CA | 4 | 4 |
| The Centre for Well-Being at The Phoenician, Scottsdale, AZ | 3 | 4 |
| The Four Seasons Spa, Los Angeles at Beverly Hills, Los Angeles, CA | 4 | 4 |
| The Lodge at Corde Valle, San Martin, CA | 4 | 4 |
| The Lodge at Pebble Beach, Pebble Beach, CA | 4 | 4 |
| The Peninsula Spa, New York, NY | 4 | 4 |
| The Peninsula Spa, Beverly Hills, Beverly Hills, CA | 4 | 4 |
| The Ritz-Carlton Spa, Naples, Naples, FL | | 4 |
| The Ritz-Carlton Members Club Spa, Sarasota, FL | 4 | 4 |
| The Ritz-Carlton Spa, Half Moon Bay, Half Moon Bay, CA | 4 | 4 |
| The Ritz-Carlton Spa, Key Biscayne, Key Biscayne, FL | | 4 |
| The Spa at Four Seasons Hotel Chicago, Chicago, IL | 4 | 4 |
| The Spa at Four Seasons Hotel Las Vegas, Las Vegas, NV | 4 | 4 |
| The Spa at Four Seasons Resort Jackson Hole, Teton Village, WY | 4 | 4 |
| The Spa at Four Seasons Resort Maui at Wailea, Wailea, Maui, HI | 4 | 4 |
| The Spa at Mandarin Oriental, Washington, DC | | 4 |
| The Spa at Omni Tucson National, Tucson, AZ | 4 | 4 |
| The Spa at Pinehurst, Pinehurst, NC | 4 | 4 |
| The Spa at Ritz-Carlton Orlando, Grande Lakes, Orlando, FL | 4 | 4 |
| The Spa at Ritz-Carlton, Lake Las Vegas, Henderson, NV | 4 | 4 |
| The Spa at Setai, Miami Beach, FL | | 4 |
| The Spa at Stein Eriksen Lodge, Park City, UT | 3 | 4 |
| The Spa at The Breakers, Palm Beach, FL | 3 | 4 |
| The Spa at the Broadmoor, Colorado Springs, CO | | 4 |
| The Spa at the Greenbrier, White Sulphur Springs, WV | 4 | 4 |
| The Spa at The Ritz-Carlton Lodge, Reynolds Plantation, Greensboro, GA | 4 | 4 |
| The Spa at Torrey Pines, La Jolla, CA | 3 | 4 |
| The Spa at Wynn Las Vegas, Las Vegas, NV | | 4 |
| The Spa Mandarin Oriental Miami, Miami, FL | 4 | 4 |
| Trellis, The Spa at The Houstonian, Houston, TX | 4 | 4 |
| Watermark Spa, San Antonio, TX | 4 | 4 |
| Willow Stream Spa, Banff, AB | 4 | 4 |
| Willow Stream Spa, Aventura, FL | 4 | 4 |
| Woodlands Spa at Nemacolin, Farmington, PA | 4 | 4 |
| Allegria Spa at Park Hyatt Beaver Creek, Avon, CO | 3 | 3 |
| Aquanox Spa, Aventura, FL | | 3 |
| Avalon Spa, Portland, OR | 3 | 3 |
| Avanyu Spa, Manchester Village, VT | | 3 |
| Elemis Spa at the Mohegan Sun, Uncasville, CT | | 3 |
| Golden Door® Spa at The Boulders, Carefree, AZ | 3 | 3 |
| ISPA at the Willard, Washington, DC | | 3 |
| Kohler Waters Spa, Kohler, WI | | 3 |
| Miramonte Resort & Spa, Indian Wells, CA | 3 | 3 |
| Revive Spa at JW Marriott Desert Ridge Resort, Phoenix, AZ | 3 | 3 |
| Spa Kea Lani at The Fairmont Kea Lani Maui, Wailea, Maui, HI | 3 | 3 |
| Spa Mirbeau, Skaneateles, NY | | 3 |
| Spa Moana, Hyatt Regency Maui, Lahaina, HI | 3 | 3 |
| Spa Mystique at The Century Plaza Hotel, Los Angeles, CA | 3 | 3 |
| Spa Toccare, Atlantic City, NJ | 3 | 3 |
| The Sanctuary Spa at Sanctuary Camelback Mountain, Paradise Valley, AZ | 3 | 3 |
| The Spa at Ponte Vedra Inn & Club, Ponte Vedra Beach, FL | 3 | 3 |
| The Spa at The Carlton Club, The Ritz-Carlton Chicago, Chicago, IL | 3 | 3 |
| The Spa at The Crescent, Dallas, TX | 3 | 3 |
| The Spa at The Hotel Hershey, Hershey, PA | 3 | 3 |
| The Spa at The Ritz-Carlton, New Orleans, New Orleans, LA | 3 | 3 |
| The Westin Resort & Spa, Whistler, BC | 3 | 3 |
| Willow Stream–The Spa at The Fairmont Scottsdale Princess, Scottsdale, AZ | 3 | 3 |
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