Guttenberg (pronounced /ɡʌtənbɜrɡ/), is a town in Hudson County, New Jersey, United States. As of the United States 2010 Census, the town population was 11,176. Only four blocks wide, Guttenberg is one of the smallest municipalities in New Jersey and the most densely populated incorporated place in the country.
Guttenberg is located atop the Hudson Palisades, south of Woodcliff and the Racetrack Section in North Bergen and north of West New York. Its western border is Kennedy Boulevard. Bergenline Avenue is a the commercial corridor of North Hudson. Its eastern border is the Hudson River, opposite Manhattan's Upper West Side.
According to the United States Census Bureau, the town has a total area of 0.2 square miles (0.6 km2), of which, 0.2 square miles (0.5 km2) of it is land and 0.04 square miles (0.1 km2) of it (16.67%) is water.