Gjennomsnittlig GPS-koordinater for postnummer ch30: 53.376, -3.105
Notering byer:
>> Wirral CH30, Merseyside, England, Wirral District (B), GPS-koordinater: 53.3762,-3.105
Notering byer:
>> Wirral CH30, Merseyside, England, Wirral District (B), GPS-koordinater: 53.3762,-3.105