County Monmouth is located in the state of New Jersey. Monmouth is spread between the coordinates of +40.3531902 Latitude and -74.07949783 Longitude. Monmouth has 59 zip codes, 73 cities, 4 area codes and 66 post offices.
Below you will find more info about Monmouth and also zip codes, cities, area codes and the post offices that belong to this county.