It's about 0.00000005 times as big as Hawaii (Island).
In other words, 51 squares is 0.00000004541630 times the size of Hawaii (Island), and the size of Hawaii (Island) is 22,018,500 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 1,122,940,000 squares 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 0.00000006 times as big as Puerto Rico.
In other words, 51 squares is 0.00000005341660 times the size of Puerto Rico, and the size of Puerto Rico is 18,720,800 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 954,759,000 squares in total land area. The island is known as a popular tourist destination.
It's about 0.00000006 times as big as Juneau.
In other words, 51 squares is 0.000000059373420 times the size of Juneau, and the size of Juneau is 16,842,550 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 858,970,200 squares in total area. Juneau is a port of call for many cruise ships voyaging off the Alaskan coast during the summer season.
It's about 0.00000008 times as big as Delaware.
In other words, 51 squares is 0.0000000734903517190550 times the size of Delaware, and the size of Delaware is 13,607,228.3858820 times that amount.(United States)
The "First State," Delaware measures 693,968,679.604030 squares in total area. Its 19.3 km (12 mi) border with Pennsylvania, referred to as "Twelve-Mile Circle" is the only circular state boundary in the United States.
It's about 0.00000009 times as big as Prince Edward Island.
In other words, 51 squares is 0.00000008335910 times the size of Prince Edward Island, and the size of Prince Edward Island is 11,996,300 times that amount.(a.k.a. PEI, a.k.a. P.E.I., a.k.a. Île-du-Prince-Édouard, a.k.a. Eilean a' Phrionnsa, a.k.a. Garden of the Gulf, a.k.a. Birthplace of the Confederation, a.k.a. Île Saint-Jean)
Prince Edward Island, located off Canada's eastern coast in the Gulf of St. Lawrence, measures 611,811,000 squares in total area. Significant among Prince Edward Island's industries is agriculture, with the island producing 1.3 billion kg (1.4 million tons) of potatoes each year — almost 21% the output of the US state of Idaho with 3% as much land.
It's about 0.00000010 times as big as Anchorage.
In other words, 51 squares is 0.000000093262870 times the size of Anchorage, and the size of Anchorage is 10,722,380 times that amount.(formally the Municipality of Anchorage, a.k.a. MOA) (Alaska)
The fourth-largest city in Alaska and in the country, Anchorage measures 546,841,400 squares in total area. The city is the home of a large energy industry, a hub for air and overseas cargo traffic, and home to nearly half of Alaska's population.
It's about 0.00000010 times as big as Grand Canyon National Park.
In other words, 51 squares is 0.00000009609507570 times the size of Grand Canyon National Park, and the size of Grand Canyon National Park is 10,406,360.50 times that amount.(Coconino County and Mohave Counties, Arizona, near Fredonia and Grand Canyon, Arizona)
Containing the 446 km (277 mi) Grand Canyon gorge, Grand Canyon National Park covers 530,724,291 squares.