Prosečne GPS koordinate za poštanski broj 571227: 19.475, 110.334
Spisak gradova:
>> Lingkou Town/岭口镇等 571227, Hainan/海南, "Ding'an County/定安县", GPS koordinate: 19.47543,110.33418
Spisak gradova:
>> Lingkou Town/岭口镇等 571227, Hainan/海南, "Ding'an County/定安县", GPS koordinate: 19.47543,110.33418