State Street, Chicago, 1900. CreditLibrary of Congress Chicago in 1850 was a muddy frontier town of barely 30,000 people. Within two decades, it was 10 times that size. Within another two decades, that number had tripled. By 1910, Chicago — hog butcher for the world , headquarters of Montgomery Ward, the nerve center of the nation’s rail network — had more than two million residents.
“You see these numbers, and they just look fake,” said David Schleicher, a law professor at Yale who writes on urban development and land use. Chicago heading into the 20th century was the fastest-growing city […]