Area codes 270 and 364

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Area codes of Kentuky: 270 and 364 in light green.

Area code 270 serves the Commonwealth of Kentucky's western and south central counties. Area code 270 was split from area code 502 on April 19, 1999.[1] Planning for the introduction of a second area code for the region, area code 364, began in 2007. After several years of delay, it was announced in December 2012 that the second code would be introduced as an overlay in August 2013, with mandatory 10-digit dialing within the geographic region beginning on February 1, 2014. Numbers in area code 364 were made available for assignment on March 3, 2014.[2]

Major cities in the region include Hopkinsville, Paducah, Henderson, Murray, Bowling Green, Owensboro, Elizabethtown, and Madisonville. It also includes Kentucky's share of Fort Campbell.


Area code 270 split off from area code 502 in 1999. The split generally followed the boundary between the Eastern and Central time zones; generally, Kentucky's share of the Central Time Zone became 270.

The creation of 270 was intended as a long-term solution. However, within only six years, 270 was already close to exhaustion due to the proliferation of cell phones and pagers. In 2006, Kentucky officials announced that 270 would run out of numbers in late 2007.[3][4] On May 31, 2007, the Kentucky Public Service Commission (PSC) announced that 270 would be split along the Pennyrile Parkway, with a newly created area code serving western Kentucky (Paducah, Hopkinsville, Henderson, Madisonville, Murray, and the Kentucky side of Fort Campbell), with west-central Kentucky (Bowling Green, Owensboro and Elizabethtown) retaining 270.[5] The PSC did note that mandatory number pooling, recently imposed on the region, may delay the implementation of the new code--and thus spare customers in the territory slated to move to 364 the expense and burden of having to change their numbers for the second time in a decade. Surprisingly, Kentucky's two most urbanized area codes, 502 (Louisville) and 859 (serving Lexington and Northern Kentucky), were not expected to exhaust until 2017 at the earliest, even though they have fewer numbers than 270.

On June 13, 2007, the PSC announced that the new area code will be 364, but also announced that the previously announced implementation would be delayed in favor of number conservation measures including expanded number pooling.[6] On June 15, 2007, the PSC postponed the permissive dialing of the new 364 area code to October 1, 2008. Mandatory dialing to the new area code was changed as well, but the actual date was to be determined later by the PSC.[7] On November 1, 2007, the PSC again postponed permissive dialing of the new 364 area code, this time to January 1, 2009.[8] On March 31, 2008, the PSC again postponed permissive dialing of the new 364 area code, to April 1, 2010. A date for mandatory dialing to 364 was left undetermined.[9]

On June 2, 2009, the PSC again postponed permissive dialing of the new 364 area code, to January 1, 2012. Mandatory dialing to 364 was still left undetermined.[10] The split was suspended indefinitely on August 13, 2010 with no permissive dialing date.[11] In December 2010, relief was suspended completely and was believed to be dead.[12] These subsequent delays of the implementation of the 270 / 364 area code split were due to further use of number conservation measures, including mandatory and expanded number pooling, as well as a weakened economy and a reduced usage of telephone numbers dedicated for use by computer and fax modems.

On September 27, 2012, the PSC announced that all number conservation options had been exhausted, and the implementation of 364 could no longer be delayed. According to the PSC, NANPA projected the 270 region would exhaust by the first quarter of 2014. NANPA recommended that instead of the original proposal for a split, 364 should be implemented as an overlay for the 270 region. Under the NANPA proposal, existing 270 numbers would be retained by customers, but 10-digit dialing for local calls would be required across western Kentucky. The PSC would also consider an alternate proposal to split the 270 area code region. "Splitting the area code in two avoids ten digit dialing but requires changing all current area code 270 numbers within the new area code to 364. That includes numbers assigned to wireless devices," said Andrew Melnykovych, Director of Communications for the PSC. The commission announced plans to hold public meetings throughout the 270 region the next month to explain the options and receive public comment. The commission also said that it will accept comments on the industry's overlay proposal for the 270 region up through November 16.[13]

External links[edit]

Kentucky area codes: 270/364, 502, 606, 859
North: 618, 812/930, 502, 859
West: 618, 573 Area code 270/364 East: 502, 606
South: 731, 931, 615/629
Missouri area codes: 314, 417, 573, 636, 660, 816
Illinois area codes: 217, 224/847, 309, 312, 331/630, 618, 708, 773, 779/815, 872
Indiana area codes: 219, 260, 317, 574, 765, 812/930
Tennessee area codes: 423, 615/629, 731, 865, 901, 931


  1. ^ "Planning Letter 155: Split of 502 Numbering Plan Area (NPA) in Kentucky" (PDF). Lockheed Martin (North American Numbering Plan Administration). February 1, 1999. Archived (PDF) from the original on May 10, 2013. Retrieved January 11, 2013.
  2. ^ "PSC Selects Overlay for New Area Code in Western Kentucky" (PDF) (Press release). Kentucky Public Service Commission. December 17, 2012. Archived (PDF) from the original on May 11, 2013. Retrieved January 11, 2013.
  3. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-04-08. Retrieved 2008-04-02.
  4. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-04-09. Retrieved 2008-04-02.
  5. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-04-08. Retrieved 2008-04-02.
  6. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-04-08. Retrieved 2008-04-02.
  7. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-04-08. Retrieved 2008-04-02.
  8. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-04-08. Retrieved 2008-04-02.
  9. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-04-08. Retrieved 2008-04-02.
  10. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2009-07-02. Retrieved 2009-07-20.
  11. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2010-11-26. Retrieved 2010-08-20.
  12. ^ Howington, Patrick (13 December 2010). "Planned new Western Kentucky area code cancelled". Courier-Journal. Retrieved 4 January 2014.(subscription required)
  13. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2014-01-04. Retrieved 2012-09-28.