Moultonborough, New Hampshire is in Carroll County and is bounded in part by Lake Winnipesaukee in the southwest and Squam Lake in the northwes A ground-level view of Lake Kanasatka during the fall, located in Moultonborough, NH t corner. Moultonborough is home to the "Castle in the Clouds", a popular destination for New Hampshire tourists set in the Ossipee Mountains. The town has a total area of 74.6 square miles with a large portion located along Lake Winnipesaukee. Lake Kanasatka is in the western part of the town. The town is in close proximity to many hiking trails and mountains, including Red Hill and Mount Shaw.