01813Woburn, Massachusetts UNIQUEActiveCountyMiddlesex CountyArea code339TimezoneAmerica/New_YorkCoordinates42,48, -71,15
01815Woburn, Massachusetts UNIQUEActiveCountyMiddlesex CountyArea code339TimezoneAmerica/New_YorkCoordinates42,48, -71,15
01821Billerica, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code339, 351, 781, 978TimezoneAmerica/New_YorkCoordinates42,55, -71,26
01822Billerica, Massachusetts PO BOXActiveCountyMiddlesex CountyArea code351TimezoneAmerica/New_YorkCoordinates42,55, -71,26
01824Chelmsford, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,59, -71,36
01826Dracut, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code351, 603, 978TimezoneAmerica/New_YorkCoordinates42,68, -71,3
01827Dunstable, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code351, 603, 978TimezoneAmerica/New_YorkCoordinates42,66, -71,48
01830Haverhill, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 603, 978TimezoneAmerica/New_YorkCoordinates42,78, -71,08
01831Haverhill, Massachusetts PO BOXActiveCountyEssex CountyArea code351TimezoneAmerica/New_YorkCoordinates42,78, -71,08
01832Haverhill, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 603, 978TimezoneAmerica/New_YorkCoordinates42,79, -71,13
01833Georgetown, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,73, -70,98
01834Groveland, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,75, -71,03
01835Haverhill, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,75, -71,09
01840Lawrence, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,71, -71,16
01841Lawrence, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,72, -71,15
01842Lawrence, Massachusetts PO BOXActiveCountyEssex CountyArea code351TimezoneAmerica/New_YorkCoordinates42,7, -71,16
01843Lawrence, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,7, -71,16
01844Methuen, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 603, 978TimezoneAmerica/New_YorkCoordinates42,74, -71,18
01845North Andover, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,7, -71,11
01850Lowell, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,66, -71,3
01851Lowell, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,63, -71,32
01852Lowell, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,63, -71,3
01853Lowell, Massachusetts PO BOXActiveCountyMiddlesex CountyArea code351TimezoneAmerica/New_YorkCoordinates42,63, -71,32
01854Lowell, Massachusetts STANDARDActiveCountyMiddlesex CountyArea code351, 978TimezoneAmerica/New_YorkCoordinates42,65, -71,35
01860Merrimac, Massachusetts STANDARDActiveCountyEssex CountyArea code351, 603, 978TimezoneAmerica/New_YorkCoordinates42,83, -71