Now with Time Zones!
The map now shows
From the second Sunday in March until the
first Sunday in November each year
— for example, from
— most areas observe Daylight Saving Time,
moving clocks forward one hour.
The clock for each time zone indicates Standard Time first
and then Daylight Saving Time.
However, some areas do not observe DST: Hawaii,
Arizona (except the Navajo Nation),
Yukon, part of British Columbia, most of Saskatchewan,
small parts of Ontario and Québec,
Puerto Rico, the U.S. Virgin Islands, Guam, and the CNMI.
These areas observe Standard Time year-round, and so are
displayed with only one time on the clock.
(Note that the entire state of Indiana now
Note also that the Aleutian Islands in extreme southwestern Alaska
are in the Hawaii-Aleutian Time Zone
does observe DST.) (2:00•3:00), and a small portion of Nunavut in
northern Canada is in Eastern Standard Time year-round (7:00).
To convert to international notation,
subtract 12 hours from the time indicated on the map;
for example, Pacific Time is shown as
4:00•5:00, corresponding to
UTC–08:00 in winter and
UTC–07:00 in summer.
page (en français,
lists the principal time zone and major cities for each area code,
and is also the quickest way to answer the question
“ Where is area code ###?”
Area Code Overlays
Due to the increasing use of overlays, the map now shows only
the first area code in an overlay area, with a plus sign to indicate
a current or planned overlay.
The only concentrated overlays, in Florida, Oregon and British Columbia,
have been “unconcentrated,” expanding to cover the entirety of the
original area codes.
Area code 870 in Arkansas was planned for an overlay with 327,
but the overlay was postponed until
however, 7 months later, the date was advanced
by 3½ months, to 2024-02-20.
Several other areas that approved overlays about a decade ago
but then postponed them due to number conservation efforts or
other factors, have finally brought those overlays into effect.
In the table below,
the states are slightly out of alphabetical order to
avoid breaking a state across two columns.
(For more detailed information about current and future overlays,
For other area code information, check the
% concentrated overlay (new area code covers only part of old)
( ) overlay has not yet taken effect;
? indicates new code not yet officially confirmed
@ 321 is a separate area code for the coastal area
(the “Space Coast” of Florida),
but also an overlay of the inland 407 area
(including Orlando and DisneyWorld)
✻ one overlay code covers multiple original code areas
§ “Boundary elimination overlay” — a previous split is undone,
creating an overlay of the two existing area codes
‡ (see note below)
This map shows all telephone area codes in use as of
in the United States and Canada.
Check the separate page for information about the 19-way split in the
There is also a Caribbean map,
which also now shows time zones.
For information on the
of new area codes, see the table on the separate page.
All boundaries shown are approximate.
Caribbean/Atlantic area codes not shown on map
The following area codes (in the Caribbean/Atlantic)
are not shown on the map
268 Antigua & Barbuda
284 British Virgin Isl.
345 Cayman Islands
649 Turks & Caicos
721 Dutch Sint Maarten
758 St. Lucia
784 St. Vincent & the Grenadines
868 Trinidad & Tobago
869 St. Kitts & Nevis
Errata, Updates and
Arizona has decided to implement a double
boundary elimination overlay, converting the 602/480/623 3‑way split
into the 602 & 480 & 623
overlay, effective 2023-09-12.
In theory, any of those three area codes could be used
anywhere in the Phoenix metro area, but in practice, only 623 has a large number
of unused prefixes, so most if not all 602 and 480 numbers will continue to be
located in their respective geographic zones, but 623 numbers will be assigned
throughout all three zones.
Big 10D: In 2021 and 2022, most U.S. area codes
that don’t already have overlays,
will implement mandatory
anyway due to a new federal mandate. For more information, see
“ 10-digit dialing The Big 10D.”
Those areas are not indicated on this map.
Yukon changed to year-round
Mountain Standard Time
(5:00 in LincMad notation, UTC–07:00)
Since Yukon had been in the
Pacific Time Zone,
the effect is the same as remaining permanently on
Pacific Daylight Time.
Also not shown on the map are three
U.S. territories in the Pacific:
Guam 671, American Samoa 684, and the
Commonwealth of the
Northern Mariana Islands 670.
(For more information, see the note below.)
The last time there was an
area code split
in the NANP was New Mexico on
The last split in Canada was Alberta on
Since then, it’s been all overlays!
California implemented two
“ boundary elimination overlays”,
which means that two adjacent area codes combine and
intermingle into a single overlay area.
In Los Angeles, area codes 213 and 323 merged on
in San Diego, area codes 619 and 858 merged on
Area code 407 in
Florida performed a
Concentrated Overlay with a Twist
in which the “Space Coast” changed to only area code 321,
while the Orlando area became an overlay of
407 & 321.
The Orlando area again ran short of numbers, so on
area code 689 was added as a further overlay of the
2019-06-04 407 & 321 area,
although, at least for the time being, 321 will continue
also to be the non-overlay
code for the Space Coast.
However, the “Space Coast” area will be changing to mandatory
10-digit dialing anyway, due to
The Big 10D
Overlay area code 564 in western
currently covers only area code 360.
However, 564 will also be used to overlay area codes
206, 253, and 425 as they run out of numbers.
Thus, 564 will eventually overlay all of the
western part of Washington state.
Illinois has three planned area code overlays
that have been on “real soon now” status for years, waiting to be
launched on very short notice when the existing area code reaches
a certain trigger point as it runs low on numbers.
The overlay of area code
The overlay of area code 217 has finally
708 was originally approved
in June 1999, with implementation details approved in July 2021.
The 708 & 464
overlay finally took effect on
the 2022-01-21 618 & 730
overlay is now scheduled for the summer of 2023.
The Canadian province of
Newfoundland and Labrador
is planning to overlay its area code 709
with the new code 879. The overlay was scheduled for
but it was postponed several times and ultimately suspended,
probably until about 2026.
Jamaica implemented an overlay
Existing area code 876 was overlaid with new area code 658.
The island of
Saint Martin in the Caribbean
is divided into two territories.
The north side is the French overseas collectivity of Saint-Martin;
the south side is the Dutch municipality of
until recently part of the Netherlands Antilles.
However, Sint Maarten has politically separated from
the rest of the Netherlands Antilles, although it remains part of
the Kingdom of the Netherlands.
Along with the political change, Sint Maarten also changed from
the old international country code of
( to the
North American area code 721
as dialed from North America) (
This change did not affect French Saint-Martin
for the rest of the world). (+590)
nor the rest of the Netherlands Antilles
(+599 & +297).
The 7-digit number in Sint Maarten remained the same;
all existing numbers begin with ‘5’.
The telephone code change was originally planned for
2010-05-31, but was postponed until
with permissive dialing until
Use of the new North American area code
is now mandatory.
Sint Maarten’s new Internet domain,
.sx, is now active.
informatie in het Nederlands •
renseignements en français)
Area code 920, serving northeastern
including Green Bay, was originally scheduled for an overlay in 2012,
but number conservation measures have allowed the overlay
to be postponed significantly. The 274 overlay was finally officially
scheduled for 2024-03-22, but has
been advanced to .
2023-05-05 Area code 870, serving most of
scheduled for an overlay in 2013, but number conservation
measures have allowed the overlay to be postponed indefinitely.
The 327 overlay was scheduled for
but 7 months later the date was advanced to
2024-02-20 Area code 270 in
Kentucky was planned for a
geographic split, with the westernmost part of the state changing
to area code 364, but the split was repeatedly postponed and
finally cancelled — but then brought back as an overlay in 2014!
Area code 814 in western
Pennsylvania was set
for a geographic split some time in 2012 or 2013.
However, number conservation efforts gave 814 some breathing room.
As a result, the split was postponed, and the PPUC decided on an
overlay of 814 & 582,
The entire state of Pennsylvania now has overlays.
The small town of
Hyder, Alaska, is served by
the telephone system in adjacent Stewart, B.C., Canada, in
area codes 250 and 778 (but so far not area codes 236 or 672).
Calls to Hyder from other parts of the U.S., including other
parts of Alaska, are billed at the international rates for Canada.
Conversely, calls between Hyder and any point in Canada are
billed as Canadian domestic calls.
The even smaller settlement of
Estcourt Station, Maine,
the very northernmost point in New England, is served by the telephone system
in neighbo(u)ring Pohénégamook, Québec, using area code 418. Just as in
Hyder, calls to Estcourt Station, from whatever location,
are billed as calls to Canada.
The entire state of
Nevada is in the
Pacific Time Zone
(4:00 • 5:00),
with the exception of the town of West Wendover,
which is officially in Mountain
(5:00 • 6:00)
to match neighboring Wendover, UT.
However, several other Nevada towns and rural areas near the
Utah or Idaho border unofficially observe Mountain Time.
U.S. territories in the Pacific
now have area codes. Guam is area code 671.
The Commonwealth of the Northern Mariana Islands
(incl. Saipan and Tinian) is area code 670.
American Samoa is area code 684.
All three can be dialed “one-plus” from the US and Canada,
or using country code
from outside the NANP.
Calls from the US mainland to these locations should be
billed as domestic calls, but may or may not be included
in “nationwide” calling plans.
However, note that the independent state of Samoa
(formerly known as Western Samoa) retains country code
( i.e., dial
Furthermore, the CNMI’s old country code
has been recycled for Timor Leste (East Timor),
an island nation north of Australia.
Colophon; Printing the map
The map above is hand-drawn, using an underlay of the
state and county maps in the Map Art collection from
Map Resources < www.MapResources.com>
The data for the map is compiled from various telecom industry sources,
including state regulatory agencies, local exchange carriers, and
published telephone listings.
The map uses a Plat Carré projection.
The font used on the map is
from Google Fonts, created by Delve Withrington/Delve Fonts,
used under the SIL Open Font License.
The map and all derivative works are copyrighted, with the
copyright registered with the United States Library of Congress.
Commercial use requires written permission from the copyright holder.
Printing the Map:
If you click on the map, it will load in a new window or tab.
If your browser or other software supports SVG graphics, you should
be able to print it at a scale to fit on one page. The fonts and
other features will scale automatically for optimum print resolution.
You can also save the map to your hard disk.
However, you may not redistribute the map in printed or
electronic form without a license.
Please do not link directly to the map image from other web sites;
link to this page
of area codes and place names, listed numerically
(“Where is area code xxx?”) —
Now with Time Zones!
of area codes and place names, listed by state/province
(“What cities and towns are in area code xxx in state X?”)
of all area code splits from 1995 to 2007,
numerically by original area code.
(“The old number was in area code xxx;
what area codes might it be in now?”)
telephone country codes and Internet country codes
showing Internet country codes and telephone country and city codes.
LincMad’s Telephone Area Code page
©1997–2023 Linc Madison,
d.b.a. LincMad Consulting, all rights reserved.
The area code map is registered copyright
©2005, Linc Madison, with modifications copyright ©2022.
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