US States List

public static class USStates
    {
        readonly static Dictionary<string, string> statesDictionary;
        readonly static string[] statesAbr;
        readonly static string[] statesNames;

        public static string[] StatesAbr
        {
            get { return statesAbr; }
        }

        public static string[] StatesNames
        {
            get { return statesNames; }
        }

        public static Dictionary<string, string> States
        {
            get { return statesDictionary; }
        }

        static USStates()
        {
            statesDictionary = new Dictionary<string, string>();

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

            statesAbr = statesDictionary.Keys.ToArray();
            statesNames = statesDictionary.Values.ToArray();
        }
    }