static CountyCache()
{
var table = Counties.GetAllCacheData();
CountyNameDictionary =
table.ToDictionary(row => MakeKey(row.StateCode, row.CountyCode),
row => row.County, StringComparer.OrdinalIgnoreCase);
CountiesByStateDictionary = table.GroupBy(row => row.StateCode)
.ToDictionary(g => g.Key,
g => g.OrderBy(row => row.County, StringComparer.OrdinalIgnoreCase)
.Select(row => row.CountyCode)
.ToList()
.AsReadOnly());
}