69,150 city blocks is about one-fourth as big as Prince Edward Island.
In other words, it's 0.2640980 times the size of Prince Edward Island, and the size of Prince Edward Island is 3.786470 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 261,835 city blocks 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.