Prosečne GPS koordinate za poštanski broj 21690: 39.035, -76.092
Spisak gradova:
>> Chestertown 21690, Maryland, Queen Anne's, GPS koordinate: 39.0346,-76.0921
Spisak gradova:
>> Chestertown 21690, Maryland, Queen Anne's, GPS koordinate: 39.0346,-76.0921