Area codes 610, 484, and 835
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Area codes 610, 484, and 835 are telephone
History
Area code 610 was assigned on January 8, 1994, in an
Three exchanges which would have switched to 610 were instead switched to
This was intended as a long-term solution, but further growth in the region over the subsequent five years, and the proliferation of cell phones and pagers, spurred the introduction of area code 484 as an overlay for the 610 region on June 5, 1999, along with the introduction of mandatory ten-digit dialing.[2]
Area code 835 was intended as an additional code for the 610/484 overlay, as announced by the
When area codes were introduced in 1947, their middle digit was either 0 or 1. In 1994, area code 610 was the last area code assigned with digit 1 in that position. The next new area codes assigned in 1995 (
Prior usage of 610 for TWX
In 1962, AT&T assigned NPA 610 for conversion to dial service of the Teletypewriter Exchange Service in Canada.[5][6] While Telex II use of area codes was terminated in 1981 in the US by Western Union, Canadian use of 610 continued until October 31, 1993, when it was exchanged in a flash cut for area code 600 for non-geographic applications.[7]
Service area
The following counties and municipalities are in the numbering plan area:
Counties
- Berks County: The entire county except the extreme western portions (in 717), extreme northern portions (in 570) and the Hereford area, which is served by the Pennsburg exchange in the 215/267 area code.
- Bucks County: The northeastern portion of the county is served by the Coopersburg, Springtown, Riegelsville, and Ferndale exchanges.
- Carbon County: The southern portion of the county is served by 377 Lehighton and 824 and 826 Palmerton exchanges. The western end of the county, including Lansford and Summit Hill, use 610 and 484 for mobile and digital numbers while retaining 570 and 645 for conventional phone numbers.
- Chester County: The entire county except the extreme western portion, which is served by the 717 and 442 Gap exchange].
- Delaware County: The entire county
- Lancaster County: Only the far southeastern portion of the county centered on Christiana. The rest of county uses the 717 area code.
- Lebanon County: Newmanstown is the only Lebanon County municipality to use 610 as its area code, specifically 610-589-XXXX, which is also used by Womelsdorf.
- Lehigh County: The entire county except the southwestern portion, which is served by the Pennsburg exchange in the 215 and 267 overlay.
- Monroe County: The far southwestern portion of the county
- Montgomery County: The southern and western portions of the county. Other areas of the county are served by the 215 and 267 area codes.
- New Castle County, Delaware - A few residences along West Ridge Road and Sterling Avenue in Claymont, Delaware use the 610, 484, and 835 exchange.
- Northampton County: The entire county except the northeastern portions, including Portland and Upper Bethel Township, which are in the 570 area code
- Schuylkill County: The southern and eastern fringes of the county, including portions of East Brunswick, West Brunswick, and West Penn Township, are served by the Lehighton, Germansville, and Kempton exchanges. Port Clinton is assigned to 610 and 484; however, the majority of it is in 570 and 272, and even smaller portions, including Tower City, is in 717.
Towns and cities
- Allentown
- Bethlehem
- Catasauqua
- Chadds Ford
- Chester
- Christiana
- Downingtown
- Easton
- Emmaus
- Exton
- Folsom
- Gap
- Hamburg
- Havertown
- Kutztown
- Lehighton
- Macungie
- Malvern
- Media
- Newtown Square
- North Catasauqua
- Northampton
- Oxford
- Palmerton
- Paoli
- Pottstown
- Reading
- Shillington
- Sinking Spring
- Tamaqua
- Upper Darby
- West Chester
- Whitehall Township
- Willistown
- Wind Gap
- Wyomissing
See also
References
- ^ "Bellcore Letter Number IL-93/01-001: NANP-Split of 215 (Pennsylvania) Numbering Plan Area (NPA)" (PDF). NANPA. 1993-01-05. Retrieved 2023-08-15.
- ^ "Area Codes in Southeast Pennsylvania", Pennsylvania Public Utility Commission
- ^ "PUC withdraws 835 overlay in 610/484 area codes", Pennsylvania Public Utility Commission, June 23, 2005
- ^ "Planning Letter 578: NPA 835 and 484/610 All-Services Overlay (Pennsylvania)" (PDF). NANPA. 2022-01-13. Retrieved 2023-07-20.
- ^ Tyberghein, E.J. (July 1962). "TWX Goes Dial". Bell Laboratories Record: 232.
- ^ Traffic Routing Guide, sec. 15-16, AT&T, 1975
- ^ "Introduction of Service Access Code (SAC) 600 to Canada" (PDF). Bellcore (NANPA). 1993-04-15. Retrieved 2023-08-14.
External links
North: 570/272 | ||
West: 717/223
|
484/610/835 | East: 215/267/445, 856, 609/640, 908 |
South: 302, 410/443/667, 856 | ||
Delaware area codes: 302 | ||
Maryland area codes: 227/240/301, 410/443/667 | ||
862/973, 908
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