4 ms·
The classic US area codes (those with a 0 or 1 as the second digit) are a snapshot of 1940s demographics. The most important cities at the time got the smallest
by whoopdedo 4y ago
The classic US area codes (those with a 0 or 1 as the second digit) are a snapshot of 1940s demographics. The most important cities at the time got the smallest numbers.
https://www.lincmad.com/map1947.html https://www.lincmad.com/map1947.html