Hutchinson is an unincorporated community and census-designated place (CDP) located within Harmony Township in Warren County, in the U.S. state of New Jersey, that was defined as part of the 2010 United States Census. As of the 2010 Census, the CDP's population was 135.

According to the United States Census Bureau, the CDP had a total area of 0.198 square miles (0.513 km), including 0.138 square miles (0.358 km) of land and 0.060 square miles (0.155 km) of water (30.24%).

Historical population

Census	Pop.	Note	%±
2010	135		—
2020	103		−23.7%
U.S. Decennial Census 2010 2020

The 2010 United States census counted 135 people, 54 households, and 40 families in the CDP. The population density was 976.3 per square mile (377.0/km). There were 65 housing units at an average density of 470.1 per square mile (181.5/km). The racial makeup was 94.07% (127) White, 0.00% (0) Black or African American, 2.22% (3) Native American, 0.00% (0) Asian, 0.00% (0) Pacific Islander, 0.00% (0) from other races, and 3.70% (5) from two or more races. Hispanic or Latino of any race were 0.00% (0) of the population.

Of the 54 households, 29.6% had children under the age of 18; 59.3% were married couples living together; 13.0% had a female householder with no husband present and 25.9% were non-families. Of all households, 20.4% were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.88.

21.5% of the population were under the age of 18, 5.2% from 18 to 24, 20.7% from 25 to 44, 34.1% from 45 to 64, and 18.5% who were 65 years of age or older. The median age was 45.9 years. For every 100 females, the population had 82.4 males. For every 100 females ages 18 and older there were 96.3 males.