Prosečne GPS koordinate za poštanski broj 1900: 52.548, 4.669
Spisak gradova:
>> Castricum 1900, Provincie Noord-Holland, Gemeente Castricum, GPS koordinate: 52.5483,4.6694
Spisak gradova:
>> Castricum 1900, Provincie Noord-Holland, Gemeente Castricum, GPS koordinate: 52.5483,4.6694