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Trenton, New Jersey Map and Directory


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Mercer County, New Jersey locator map According to the United States Census Bureau, Trenton is a City that is located in Mercer County, New Jersey at 40.22 degrees North and 74.74 degrees West.  The city's time zone is America/New York, and the city's primary telephone area code is 609.  The land area of Trenton is about 7.65 square miles, whereas the water area of the city is about 0.51 square miles.  Mercer County's land area is about 225 square miles, so the city occupies about 3.4 percent of the county's total land area.

The Census Bureau estimates that Trenton had about 84,964 residents in 2017, which is approximately 11,106 people per square mile of land area. 

According to recent American Community Survey data, Trenton had 27,998 total estimated households and the median household income was about $35,647 per year. 

The New Jersey counties map at upper right shows Mercer County, highlighted in red.  Use the menu below to display interactive maps of Trenton, either in a frame on this page or in full-screen mode. 

Use the menu below to display categorized Trenton directories. 

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