The Park at Walnut Ridge Apartments for rent in Frederick, MD on ForRent.com: (877) 657-9125 - Availability, pricing and special promotions subject to change daily. 1, 2 and 3 BEDROOM APARTMENT HOMES IN FREDERICK, MD! Nestled within the exclusive and quaint area of the Walnut Ridge, you can easily take in the serene mountain views simply by lounging at the pool or hanging with fellow pet lovers at our exclusive dog park.