List of States in the United States (2024)

'AL' => 'Alabama','AK' => 'Alaska','AZ' => 'Arizona','AR' => 'Arkansas','CA' => 'California','CO' => 'Colorado','CT' => 'Connecticut','DE' => 'Delaware','DC' => 'District Of Columbia','FL' => 'Florida','GA' => 'Georgia','HI' => 'Hawaii','ID' => 'Idaho','IL' => 'Illinois','IN' => 'Indiana','IA' => 'Iowa','KS' => 'Kansas','KY' => 'Kentucky','LA' => 'Louisiana','ME' => 'Maine','MD' => 'Maryland','MA' => 'Massachusetts','MI' => 'Michigan','MN' => 'Minnesota','MS' => 'Mississippi','MO' => 'Missouri','MT' => 'Montana','NE' => 'Nebraska','NV' => 'Nevada','NH' => 'New Hampshire','NJ' => 'New Jersey','NM' => 'New Mexico','NY' => 'New York','NC' => 'North Carolina','ND' => 'North Dakota','OH' => 'Ohio','OK' => 'Oklahoma','OR' => 'Oregon','PA' => 'Pennsylvania','RI' => 'Rhode Island','SC' => 'South Carolina','SD' => 'South Dakota','TN' => 'Tennessee','TX' => 'Texas','UT' => 'Utah','VT' => 'Vermont','VA' => 'Virginia','WA' => 'Washington','WV' => 'West Virginia','WI' => 'Wisconsin','WY' => 'Wyoming',

//CANADIAN PROVINCES
'AB' => 'Alberta',
'BC' => 'British Columbia',
'MB' => 'Manitoba',
'NB' => 'New Brunswick',
'NL' => 'Newfoundland and Labrador',
'NS' => 'Nova Scotia',
'NT' => 'Northwest Territories',
'NU' => 'Nunavut',
'ON' => 'Ontario',
'PE' => 'Prince Edward Island',
'QC' => 'Quebec',
'SK' => 'Saskatchewan',
'YT' => 'Yukon',

Because this list was useful for me for the US states and there was no similar one already posted for the Canadian provinces.

The original list is not alphabetical (within states with same starting letter). Here is that list:
AK|AK
AL|AL
AR|AR
AZ|AZ
CA|CA
CO|CO
CT|CT
DC|DC
DE|DE
FL|FL
GA|GA
HI|HI
IA|IA
ID|ID
IL|IL
IN|IN
KS|KS
KY|KY
LA|LA
MA|MA
MD|MD
ME|ME
MI|MI
MN|MN
MO|MO
MS|MS
MT|MT
NC|NC
ND|ND
NE|NE
NH|NH
NJ|NJ
NM|NM
NV|NV
NY|NY
OH|OH
OK|OK
OR|OR
PA|PA
RI|RI
SC|SC
SD|SD
TN|TN
TX|TX
UT|UT
VA|VA
VT|VT
WA|WA
WI|WI
WV|WV
WY|WY

Alabama|AlabamaAlaska|AlaskaAlberta|AlbertaArizona|ArizonaArkansas|ArkansasBritish Columbia|British ColumbiaCalifornia|CaliforniaColorado|ColoradoConnecticut|ConnecticutDelaware|DelawareDistrict Of Columbia|District Of ColumbiaFlorida|FloridaGeorgia|GeorgiaHawaii|HawaiiIdaho|IdahoIllinois|IllinoisIndiana|IndianaIowa|IowaKansas|KansasKentucky|KentuckyLouisiana|LouisianaMaine|MaineManitoba|ManitobaMaryland|MarylandMassachusetts|MassachusettsMichigan|MichiganMinnesota|MinnesotaMississippi|MississippiMissouri|MissouriMontana|MontanaNebraska|NebraskaNevada|NevadaNew Brunswick|New BrunswickNew Hampshire|New HampshireNew Jersey|New JerseyNew Mexico|New MexicoNew York|New YorkNewfoundland and Labrador|Newfoundland and LabradorNorth Carolina|North CarolinaNorth Dakota|North DakotaNorthwest Territories|Northwest TerritoriesNova Scotia|Nova ScotiaNunavut|NunavutOhio|OhioOklahoma|OklahomaOntario|OntarioOregon|OregonPalau|PalauPuerto Rico|Puerto RicoPennsylvania|PennsylvaniaPrince Edward Island|Prince Edward IslandQuebec|QuebecRhode Island|Rhode IslandSaskatchewan|SaskatchewanSouth Carolina|South CarolinaSouth Dakota|South DakotaTennessee|TennesseeTexas|TexasUtah|UtahVermont|VermontVirginia|VirginiaWashington|WashingtonWest Virginia|West VirginiaWisconsin|WisconsinWyoming|WyomingYukon|YukonNone/Other|None/Other

1|Alabama
2|Alaska
3|Alberta
4|Arizona
5|Arkansas
6|British Columbia
7|California
8|Colorado
9|Connecticut
10|Delaware
11|District Of Columbia
12|Florida
13|Georgia
14|Hawaii
15|Idaho
16|Illinois
17|Indiana
18|Iowa
19|Kansas
20|Kentucky
21|Louisiana
22|Maine
23|Manitoba
24|Maryland
25|Massachusetts
26|Michigan
27|Minnesota
28|Mississippi
29|Missouri
30|Montana
31|Nebraska
32|Nevada
33|New Brunswick
34|New Hampshire
35|New Jersey
36|New Mexico
37|New York
38|Newfoundland and Labrador
39|North Carolina
40|North Dakota
41|Northwest Territories
42|Nova Scotia
43|Nunavut
44|Ohio
45|Oklahoma
46|Ontario
47|Oregon
48|Palau
49|Puerto Rico
50|Pennsylvania
51|Prince Edward Island
52|Quebec
53|Rhode Island
54|Saskatchewan
55|South Carolina
56|South Dakota
57|Tennessee
58|Texas
59|Utah
60|Vermont
61|Virginia
62|Washington
63|West Virginia
64|Wisconsin
65|Wyoming
66|Yukon
67|None/Other

if you needed numerical code

The Costa Rica codes for its provinces based on ISO 3166-2:CR:

CR-SJ|San José
CR-A|Alajuela
CR-C|Cartago
CR-H|Heredia
CR-G|Guanacaste
CR-P|Puntarenas
CR-L|Limón

Also an array format to custom implementations:

<?php$provinces = array( 'CR-SJ' => 'San José', 'CR-A' => 'Alajuela', 'CR-C' => 'Cartago', 'CR-H' => 'Heredia', 'CR-G' => 'Guanacaste', 'CR-P' => 'Puntarenas', 'CR-L' => 'Limón',);?>

Pipe Delimited Values

AG|AguascalientesBN|Baja CaliforniaBS|Baja California SurCM|CampecheCP|ChiapasCH|ChihuahuaCA|CoahuilaCL|ColimaDF|DurangoDU|Federal DistrictGT|GuanajuatoGR|GuerreroHI|HidalgoJA|JaliscoMX|MexicoMC|MichoacanMR|MorelosNA|NayaritNL|Nuevo LeonOA|OaxacaPU|PueblaQE|QueretaroQR|Quintana RooSL|San Luis PotosiSI|SinaloaSO|SonoraTB|TabascoTM|TamaulipasTL|TlaxcalaVE|VeracruzYU|YucatanZA|Zacatecas

PHP Associative Array

'AG' => 'Aguascalientes','BN' => 'Baja California','BS' => 'Baja California Sur','CM' => 'Campeche','CP' => 'Chiapas','CH' => 'Chihuahua','CA' => 'Coahuila','CL' => 'Colima','DF' => 'Durango','DU' => 'Federal District','GT' => 'Guanajuato','GR' => 'Guerrero','HI' => 'Hidalgo','JA' => 'Jalisco','MX' => 'Mexico','MC' => 'Michoacan','MR' => 'Morelos','NA' => 'Nayarit','NL' => 'Nuevo Leon','OA' => 'Oaxaca','PU' => 'Puebla','QE' => 'Queretaro','QR' => 'Quintana Roo','SL' => 'San Luis Potosi','SI' => 'Sinaloa','SO' => 'Sonora','TB' => 'Tabasco','TM' => 'Tamaulipas','TL' => 'Tlaxcala','VE' => 'Veracruz','YU' => 'Yucatan','ZA' => 'Zacatecas',