It's about one-fifty-fifth as big as Alaska
In other words, 31,000,000 dunams is 0.01804577 times the size of Alaska, and the size of Alaska is 55.414655 times that amount.(United States)
The "Last Frontier," Alaska measures 1,717,854,300 dunams in total area. Alaska is home to over 100,000 glaciers — half of the world's total — including the Bering Glacier complex near the southeastern border of Alaska, which covers 5,830,000 dunams.
It's about 70 times as big as San Jose
In other words, 31,000,000 dunams is 68.4 times the size of San Jose, and the size of San Jose is 0.015 times that amount.(a.k.a. Capital of Silicon Valley) (California)
The third-largest city in California as of 2009, San Jose measures 453,000 dunams in total area. The city is known for its large technology industry.
It's about 80 times as big as The Isle of Wight
In other words, 31,000,000 dunams is 79.9 times the size of The Isle of Wight, and the size of The Isle of Wight is 0.013 times that amount.(England, United Kingdom)
The Isle of Wight, located in the English Channel, just off the English mainland, measures 388,000 dunams in total area. The Island hosts the world's largest and longest-running regular regatta — Cowes Week — which has brought over 1,000 yachts to the island each August since 1812.
It's about 85 times as big as Detroit
In other words, 31,000,000 dunams is 86.23 times the size of Detroit, and the size of Detroit is 0.012 times that amount.(Michigan)
The largest city in Michigan as of 2009, Detroit measures 359,500 dunams in total area. The city is known for its automotive industry and its popular music legacies in the soul, hip hop, pop, and rhythm & blues genres
It's about 90 times as big as Philadelphia
In other words, 31,000,000 dunams is 88.6 times the size of Philadelphia, and the size of Philadelphia is 0.0113 times that amount.(a.k.a. Philly, a.k.a. The City of Brotherly Love) (Pennsylvania)
The largest city in Pennsylvania as of 2009 and at one time the second-largest city in the British Empire, Philadelphia measures 349,900 dunams in total area. The city is known as a center of great historical importance and as the one-time capital of the United States.
It's about 100 times as big as Dublin
In other words, 31,000,000 dunams is 97.64 times the size of Dublin, and the size of Dublin is 0.0102 times that amount.(a.k.a. Baile Átha Cliath) (Leinster, Ireland) (for metro Dublin City)
The city of Dublin and its surrounding metro areas measure 317,500 dunams. Dublin is home to the Spire of Dublin, a stainless steel monument built in 2003 that rises to 121.2 m in height.
It's about 100 times as big as Edinburgh
In other words, 31,000,000 dunams is 117 times the size of Edinburgh, and the size of Edinburgh is 0.0086 times that amount.(a.k.a. Edinburgh, a.k.a. Dùn Èideann, a.k.a. Edinburgum) (Scotland, United Kingdom)
Edinburgh, Scotland's capital, measures 264,000 dunams. Edinburgh Castle, atop Castle Rock, is the centerpiece of the city and has been continuously-occupied for over 1,800 years.