Chicago

312, 213 palendromic area codes in the nation’s largest cities

It’s wild that two of the three biggest cities in the US have palindromic area codes to each other: 312: Chicago 213: Los Angeles Update 20 years later: How Chicago got 3, 1, and 2 digits in their area code. This blog post explains why Los Angeles, Chicago, Detroit, and New York City all have …

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