Kentucky area codes

Codes in service in Kentucky

Kentucky has 5 geographic area codes in service: 270, 364, 502, 606, 859. 502 is the oldest, dated 1947, and 364 the newest, dated 3 Mar 2014.1 The time zones across Kentucky's codes are Eastern and Central and Eastern.

Area code	NANPA location	NPA in-service date	In-service overlay peers	Time zone	Local calls within the code
270	KY	19 Apr 1999	364	Eastern and Central	10 digits
364	KY	3 Mar 2014	270	Eastern and Central	10 digits
502	KY	1947	None listed	Eastern	7 digits
606	KY	1955	None listed	Eastern and Central	7 digits
859	KY	1 Apr 2000	None listed	Eastern	10 digits

Scroll the table sideways to see every column. Sources: NANPA (14 October 2026 file).

History and overlays in Kentucky

Before 1960: 502 (1947), 606 (1955)
1990s: 270 (19 Apr 1999)
2000s: 859 (1 Apr 2000)
2010s: 364 (3 Mar 2014)

Kentucky's in-service overlay group is 270/364.1

270/364: 270 (1999) was joined by 364 on 3 Mar 2014.

Dialing in Kentucky

Local calls within a single area code in Kentucky differ: 7 digits for 502, 606; 10 digits for 270, 364, 859. In Kentucky, local calls to other area codes differ: 7 digits for 502; 10 digits for 270, 364, 606, 859.1 Seven-digit local dialing is still recorded for 502, 606.

Pending codes in Kentucky

One code is assigned but not yet in service for Kentucky's overlay complexes.1 NANPA marks relief planning as in progress for 502.

761 is assigned (7 Aug 2025) and is expected in service on a date NANPA has not yet listed, as an overlay of 502; NANPA status: Trigger.

Neighbours of Kentucky

Regions that border Kentucky:

Illinois: 17 codes (217, 224, 309, 312, ...)
Indiana: 8 codes (219, 260, 317, 463, ...)
Ohio: 15 codes (216, 220, 234, 283, ...)
Tennessee: 8 codes (423, 615, 629, 729, ...)

Rules that apply to every region are on the area-code reference.

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Sources

Every regulatory and pricing claim on this page links to the primary source it came from. Figures were checked on the date shown at the top of the page; rules and prices change, so verify before relying on one.

NANPA, NPA Database CSV, file dated 14 October 2026; US geographic codes, location, dates, overlay complexes, dialing plan and time zone. Retrieved 14 Oct 2026
https://reports.nanpa.com/public/npa_report.csv