About Port Monmouth, NJPort Monmouth is located in New Jersey. Port Monmouth, New Jersey has a population of 4,595. Port Monmouth is more family-centric than the surrounding county with 35% households with children. The county percentage for households with children is 31%. The median household income in Port Monmouth, New Jersey is $79,783. The median household income for the surrounding county is $74,667 compared to the national median of $49,877. The median age of people living in Port Monmouth is 41.8 years. Port Monmouth WeatherThe average high temperature in July is 83.1 degrees, with an average low temperature in January of 25.7 degrees. The annual precipitation is 43.58. Port Monmouth MapPort Monmouth real estate officesSort by:
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