US states in JSON form

states_hash.json

{
    "AL": "Alabama",
    "AK": "Alaska",
    "AS": "American Samoa",
    "AZ": "Arizona",
    "AR": "Arkansas",
    "CA": "California",
    "CO": "Colorado",
    "CT": "Connecticut",
    "DE": "Delaware",
    "DC": "District Of Columbia",
    "FM": "Federated States Of Micronesia",
    "FL": "Florida",
    "GA": "Georgia",
    "GU": "Guam",
    "HI": "Hawaii",
    "ID": "Idaho",
    "IL": "Illinois",
    "IN": "Indiana",
    "IA": "Iowa",
    "KS": "Kansas",
    "KY": "Kentucky",
    "LA": "Louisiana",
    "ME": "Maine",
    "MH": "Marshall Islands",
    "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",
    "MP": "Northern Mariana Islands",
    "OH": "Ohio",
    "OK": "Oklahoma",
    "OR": "Oregon",
    "PW": "Palau",
    "PA": "Pennsylvania",
    "PR": "Puerto Rico",
    "RI": "Rhode Island",
    "SC": "South Carolina",
    "SD": "South Dakota",
    "TN": "Tennessee",
    "TX": "Texas",
    "UT": "Utah",
    "VT": "Vermont",
    "VI": "Virgin Islands",
    "VA": "Virginia",
    "WA": "Washington",
    "WV": "West Virginia",
    "WI": "Wisconsin",
    "WY": "Wyoming"
}

states_titlecase.json

[
    {
        "name": "Alabama",
        "abbreviation": "AL"
    },
    {
        "name": "Alaska",
        "abbreviation": "AK"
    },
    {
        "name": "American Samoa",
        "abbreviation": "AS"
    },
    {
        "name": "Arizona",
        "abbreviation": "AZ"
    },
    {
        "name": "Arkansas",
        "abbreviation": "AR"
    },
    {
        "name": "California",
        "abbreviation": "CA"
    },
    {
        "name": "Colorado",
        "abbreviation": "CO"
    },
    {
        "name": "Connecticut",
        "abbreviation": "CT"
    },
    {
        "name": "Delaware",
        "abbreviation": "DE"
    },
    {
        "name": "District Of Columbia",
        "abbreviation": "DC"
    },
    {
        "name": "Federated States Of Micronesia",
        "abbreviation": "FM"
    },
    {
        "name": "Florida",
        "abbreviation": "FL"
    },
    {
        "name": "Georgia",
        "abbreviation": "GA"
    },
    {
        "name": "Guam",
        "abbreviation": "GU"
    },
    {
        "name": "Hawaii",
        "abbreviation": "HI"
    },
    {
        "name": "Idaho",
        "abbreviation": "ID"
    },
    {
        "name": "Illinois",
        "abbreviation": "IL"
    },
    {
        "name": "Indiana",
        "abbreviation": "IN"
    },
    {
        "name": "Iowa",
        "abbreviation": "IA"
    },
    {
        "name": "Kansas",
        "abbreviation": "KS"
    },
    {
        "name": "Kentucky",
        "abbreviation": "KY"
    },
    {
        "name": "Louisiana",
        "abbreviation": "LA"
    },
    {
        "name": "Maine",
        "abbreviation": "ME"
    },
    {
        "name": "Marshall Islands",
        "abbreviation": "MH"
    },
    {
        "name": "Maryland",
        "abbreviation": "MD"
    },
    {
        "name": "Massachusetts",
        "abbreviation": "MA"
    },
    {
        "name": "Michigan",
        "abbreviation": "MI"
    },
    {
        "name": "Minnesota",
        "abbreviation": "MN"
    },
    {
        "name": "Mississippi",
        "abbreviation": "MS"
    },
    {
        "name": "Missouri",
        "abbreviation": "MO"
    },
    {
        "name": "Montana",
        "abbreviation": "MT"
    },
    {
        "name": "Nebraska",
        "abbreviation": "NE"
    },
    {
        "name": "Nevada",
        "abbreviation": "NV"
    },
    {
        "name": "New Hampshire",
        "abbreviation": "NH"
    },
    {
        "name": "New Jersey",
        "abbreviation": "NJ"
    },
    {
        "name": "New Mexico",
        "abbreviation": "NM"
    },
    {
        "name": "New York",
        "abbreviation": "NY"
    },
    {
        "name": "North Carolina",
        "abbreviation": "NC"
    },
    {
        "name": "North Dakota",
        "abbreviation": "ND"
    },
    {
        "name": "Northern Mariana Islands",
        "abbreviation": "MP"
    },
    {
        "name": "Ohio",
        "abbreviation": "OH"
    },
    {
        "name": "Oklahoma",
        "abbreviation": "OK"
    },
    {
        "name": "Oregon",
        "abbreviation": "OR"
    },
    {
        "name": "Palau",
        "abbreviation": "PW"
    },
    {
        "name": "Pennsylvania",
        "abbreviation": "PA"
    },
    {
        "name": "Puerto Rico",
        "abbreviation": "PR"
    },
    {
        "name": "Rhode Island",
        "abbreviation": "RI"
    },
    {
        "name": "South Carolina",
        "abbreviation": "SC"
    },
    {
        "name": "South Dakota",
        "abbreviation": "SD"
    },
    {
        "name": "Tennessee",
        "abbreviation": "TN"
    },
    {
        "name": "Texas",
        "abbreviation": "TX"
    },
    {
        "name": "Utah",
        "abbreviation": "UT"
    },
    {
        "name": "Vermont",
        "abbreviation": "VT"
    },
    {
        "name": "Virgin Islands",
        "abbreviation": "VI"
    },
    {
        "name": "Virginia",
        "abbreviation": "VA"
    },
    {
        "name": "Washington",
        "abbreviation": "WA"
    },
    {
        "name": "West Virginia",
        "abbreviation": "WV"
    },
    {
        "name": "Wisconsin",
        "abbreviation": "WI"
    },
    {
        "name": "Wyoming",
        "abbreviation": "WY"
    }
]

Is this somewhere existing for the whole world?!

Is this somewhere existing for the whole world?!

Yes, here.

Looking for exactly this! Thank you @mshafrir

All lowercase. Spaces replaced with dashes.

{
  "al": "alabama",
  "ak": "alaska",
  "as": "american-samoa",
  "az": "arizona",
  "ar": "arkansas",
  "ca": "california",
  "co": "colorado",
  "ct": "connecticut",
  "de": "delaware",
  "dc": "district-of-columbia",
  "fm": "federated-states-of-micronesia",
  "fl": "florida",
  "ga": "georgia",
  "gu": "guam",
  "hi": "hawaii",
  "id": "idaho",
  "il": "illinois",
  "in": "indiana",
  "ia": "iowa",
  "ks": "kansas",
  "ky": "kentucky",
  "la": "louisiana",
  "me": "maine",
  "mh": "marshall-islands",
  "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",
  "mp": "northern-mariana-islands",
  "oh": "ohio",
  "ok": "oklahoma",
  "or": "oregon",
  "pw": "palau",
  "pa": "pennsylvania",
  "pr": "puerto-rico",
  "ri": "rhode-island",
  "sc": "south-carolina",
  "sd": "south-dakota",
  "tn": "tennessee",
  "tx": "texas",
  "ut": "utah",
  "vt": "vermont",
  "vi": "virgin-islands",
  "va": "virginia",
  "wa": "washington",
  "wv": "west-virginia",
  "wi": "wisconsin",
  "wy": "wyoming"
}

inspired by @WHITEH0ST to include full names for Django Choicefield: -

US_STATES = (
    ('Select one', 'Select one'), 
    ('AL', 'Alabama'),
    ('AK', 'Alaska'),
    ('AZ', 'Arizona'),
    ('AR', 'Arkansas'),
    ('AS', 'American Samoa'),
    ('CA', 'California'),
    ('CO', 'Colorado'),
    ('CT', 'Connecticut'),
    ('DE', 'Delaware'),
    ('DC', 'District Of Columbia'),
    ('FM', 'Federated States Of Micronesia'),
    ('FL', 'Florida'),
    ('GA', 'Georgia'),
    ('GU', 'Guam'),
    ('HI', 'Hawaii'),
    ('ID', 'Idaho'),
    ('IL', 'Illinois'),
    ('IN', 'Indiana'),
    ('IA', 'Iowa'),
    ('KS', 'Kansas'),
    ('KY', 'Kentucky'),
    ('LA', 'Louisiana'),
    ('ME', 'Maine'),
    ('MH', 'Marshall Islands'),
    ('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'),
    ('MP', 'Northern Mariana Islands'),
    ('OH', 'Ohio'),
    ('OK', 'Oklahoma'),
    ('OR', 'Oregon'),
    ('PW', 'Palau'),
    ('PA', 'Pennsylvania'),
    ('PR', 'Puerto Rico'),
    ('RI', 'Rhode Island'),
    ('SC', 'South Carolina'),
    ('SD', 'South Dakota'),
    ('TN', 'Tennessee'),
    ('TX', 'Texas'),
    ('UT', 'Utah'),
    ('VT', 'Vermont'),
    ('VI', 'Virgin Islands'),
    ('VA', 'Virginia'),
    ('WA', 'Washington'),
    ('WV', 'West Virginia'),
    ('WI', 'Wisconsin'),
    ('WY', 'Wyoming')
)

Thank you very much for sharing!