It's about as big as Sitka.
(a.k.a. the City and Borough of Sitka) (Alaska)
The second-largest city in both Alaska and the United States, Sitka measures 12,560,380 dunams in total area. The city is known as a major west coast seaport.
It's about nine-tenths as big as Glacier Bay National Park.
In other words, 12,560,380 dunams is 0.94510 times the size of Glacier Bay National Park, and the size of Glacier Bay National Park is 1.058 times that amount.(a.k.a. Glacier Bay National Park and Preserve) (Hoonah-Angoon Census area, and Yakutat City and Borough, Alaska)
Containing nine tidewater glaciers, Glacier Bay National Park covers 13,290,000 dunams of which 10,760,000 dunams is designated a Wilderness Area. Glacier Bay is home to the 33.8 km (21 mi) long Margerie Glacier.
It's about nine-tenths as big as Connecticut.
In other words, 12,560,380 dunams is 0.8748490 times the size of Connecticut, and the size of Connecticut is 1.143050 times that amount.(United States)
The "Constitution State" or the "Nutmeg State," Connecticut measures 14,357,200 dunams in total area. The northern boundary between Connecticut and Massachusetts is an otherwise straight line marked by the 6,500 dunams "Southwick Jog" — a notch of Massachusetts extending southward into Connecticut near Congamond Lakes.
It's about one-and-one-fifth times as big as Hawaii (Island).
In other words, 12,560,380 dunams is 1.203970 times the size of Hawaii (Island), and the size of Hawaii (Island) is 0.8305850 times that amount.(a.k.a. Hawaii, a.k.a. The Big Island) (Hawaii)
The largest of the main Hawaiian Islands and the largest island in the United States, Hawaii measures 10,432,500 dunams in total area. It is known for its continuously erupting (for the past two decades, as of 2011) volcano, Kīlauea, and for the black sand beaches formed by the lava flow.
It's about one-and-two-fifths times as big as Puerto Rico.
In other words, 12,560,380 dunams is 1.416050 times the size of Puerto Rico, and the size of Puerto Rico is 0.706190 times that amount.(formally the Commonwealth of Puerto Rico, a.k.a. Estado Libre Asociado de Puerto Rico) (United States)
A self-governing territory of the United States located in the Caribbean Sea, Puerto Rico is an archipelago with 8,870,000 dunams in total land area. The island is known as a popular tourist destination.
It's about two-thirds as big as Lake Ontario.
In other words, 12,560,380 dunams is 0.66250 times the size of Lake Ontario, and the size of Lake Ontario is 1.5090 times that amount.(a.k.a. Lac Ontario) (surface area)
The smallest of North America's Great Lakes (by surface area), Lake Ontario has a total area of 18,960,000 dunams. It borders the cities of Toronto, Ontario, Canada and Rochester, New York.
It's about one-and-three-fifths times as big as Juneau.
In other words, 12,560,380 dunams is 1.5739640 times the size of Juneau, and the size of Juneau is 0.63533850 times that amount.(a.k.a. the City and Borough of Juneau) (Alaska)
The capital of Alaska and third-largest city in both Alaska and the United States, Juneau measures 7,980,094 dunams in total area. Juneau is a port of call for many cruise ships voyaging off the Alaskan coast during the summer season.