Area codes 610, 484, and 835

Area codes 610, 484, and 835 are telephone area codes in the state of Pennsylvania, USA. Area code 610 was created on January 8, 1994, as a split from area code 215. It was the last original area code which had either a 0 or 1 as the middle digit. Future area codes would have digits from 2 to 8 in the middle. It covers cities such as Allentown, Bethlehem, Reading, Chester, and Norristown. It was overlaid by 484 in 1999 and 835 in 2022.