Land for sale in Lake and Peninsula Borough recently totaled approximately $4 million and nearly 1,000 acres. Lake and Peninsula Borough ranks 10th in The Last Frontier for the total number of acres of land currently advertised for sale. Of all locations in Lake and Peninsula Borough with land and rural real estate for sale, Port Alsworth featured the most land for sale. Lake and Peninsula Borough is one of the ten biggest counties in Alaska (33,933 square miles). It's located in the Southwest Alaska region of Alaska.