North American Area Code Atlas

Area codes, places,
and the stories behind them.

Look up where an area code serves, how it changed, and which codes it split from or overlaps — every fact cited to its source.

FIG · LA REGION213 LINEAGE
Split Overlay

Simplified illustration — see the 213 profile for the full lineage.

01 · Explore North America

Start with a state or province

Choose a country, then browse every state or province it covers — each opens its area codes, place details and history. This atlas spans the North American Numbering Plan (+1).

Alabama 7 codes
205251256334 +3
Alaska 1 code
907
American Samoa 1 code
684
Arizona 5 codes
480520602623 +1
Arkansas 4 codes
327479501870
California 41 codes
209213279310 +37
Colorado 6 codes
303719720748 +2
Connecticut 4 codes
203475860959
Delaware 1 code
302
District of Columbia 2 codes
202771
Florida 23 codes
239305321324 +19
Georgia 10 codes
229404470478 +6
Guam 1 code
671
Hawaii 1 code
808
Idaho 2 codes
208986
Illinois 17 codes
217224309312 +13
Indiana 8 codes
219260317463 +4
Iowa 5 codes
319515563641 +1
Kansas 4 codes
316620785913
Kentucky 5 codes
270364502606 +1
Louisiana 6 codes
225318337457 +2
Maine 1 code
207
Maryland 6 codes
227240301410 +2
Massachusetts 9 codes
339351413508 +5
Michigan 13 codes
231248269313 +9
Minnesota 8 codes
218320507612 +4
Mississippi 5 codes
228471601662 +1
Missouri 9 codes
235314417557 +5
Montana 1 code
406
Nebraska 3 codes
308402531
Nevada 3 codes
702725775
New Hampshire 1 code
603
New Jersey 10 codes
201551609640 +6
New Mexico 2 codes
505575
New York 23 codes
212315329332 +19
North Carolina 10 codes
252336472704 +6
North Dakota 1 code
701
Northern Mariana Islands 1 code
670
Ohio 15 codes
216220234283 +11
Oklahoma 5 codes
405539572580 +1
Oregon 4 codes
458503541971
Pennsylvania 15 codes
215223267272 +11
Puerto Rico 2 codes
787939
Rhode Island 1 code
401
South Carolina 6 codes
803821839843 +2
South Dakota 1 code
605
Tennessee 8 codes
423615629729 +4
Texas 29 codes
210214254281 +25
U.S. Virgin Islands 1 code
340
Utah 3 codes
385435801
Vermont 1 code
802
Virginia 10 codes
276434540571 +6
Washington 6 codes
206253360425 +2
West Virginia 2 codes
304681
Wisconsin 8 codes
262274353414 +4
Wyoming 1 code
307

Open the United States overview →

History packs Los Angeles →
02 · Directory

Every area code

A source-cited profile for every area code — the place it covers, its split/overlay relationships and its history. 433 codes across the U.S., Canada and other NANP members. Not a ranking.

626
San Gabriel Valley
Most of the San Gabriel Valley in northeastern Los Angeles...
Split · 818
View details →
310
West Los Angeles / South Bay
West Los Angeles and the South Bay of Los Angeles County,...
Split · 213, 562 Overlay · 424
View details →
818
San Fernando Valley
San Fernando Valley of Los Angeles County, plus small part...
Split · 213, 626 Overlay · 747
View details →
424
West Los Angeles / South Bay (overlay)
Same territory as area code 310: West Los Angeles and the...
Overlay · 310
View details →
213
Downtown Los Angeles
Downtown Los Angeles and adjacent communities in central L...
Split · 714, 805 Overlay · 323, 738
View details →
323
Los Angeles (around downtown core)
Central Los Angeles County, California, surrounding the do...
Split · 213 Overlay · 213, 738
View details →
205
Birmingham
Central and west-central Alabama; roughly 20 counties.
Split · 334, 256 Overlay · 659
View details →
659
Birmingham (overlay)
Central and west-central Alabama; identical footprint to 2...
Overlay · 205
View details →
251
Mobile
Southwestern Alabama; fully covers Mobile, Baldwin and Was...
Split · 334
View details →
334
Montgomery
South-central and southeastern Alabama, including the Alab...
Split · 205, 251 Overlay · 483
View details →
483
Montgomery (overlay)
South-central and southeastern Alabama; identical footprin...
Overlay · 334
View details →
256
Huntsville
North and northeast Alabama; 24 counties fully or partiall...
Split · 205 Overlay · 938
View details →
03 · Plate 01

How L.A.'s original area code split into today's core codes

A single code — 213 — once served a broad Southern California territory. Follow the 213 lineage of splits and overlays that produced the core Los Angeles County codes, each event dated and cited to CPUC records.

Open the Los Angeles history pack →
04 · Compare

Compare area codes

Two codes side by side — place, history and how they relate. Only facts with a source; no invented "value" scores.

Every page cites its sources and marks its last-verified date — see how this is made. Facts licensed CC BY 4.0. Underlying numbering data: NumberResearch.