Whittingham, also known as Greenbriar at Whittingham, is an unincorporated community and census-designated place (CDP) located within Monroe Township, in Middlesex County, New Jersey, United States. As of the 2010 United States Census, the CDP’s population was 2,476. The area is focused re the age-restricted gated community of Whittingham.

According to the United States Census Bureau, the CDP had a total area of 1.003 square miles (2.598 km), including 0.997 square miles (2.582 km²) of estate and 0.006 square miles (0.016 km) of water (0.60%).

The 2010 United States census counted 2,476 people, 1,416 households, and 862 families in the CDP. The population density was 2,483.2 per square mile (958.8/km). There were 1,564 housing units at an average density of 1,568.6 per square mile (605.6/km²). The racial makeup was 95.48% (2,364) White, 2.22% (55) Black or African American, 0.00% (0) Native American, 2.02% (50) Asian, 0.00% (0) Pacific Islander, 0.16% (4) from supplementary races, and 0.12% (3) from two or more races. Hispanic or Latino of any race were 1.62% (40) of the population.

Of the 1,416 households, 3.0% had children under the age of 18; 58.9% were married couples bustling together; 1.7% had a female householder in imitation of no husband gift and 39.1% were non-families. Of everything households, 35.7% were made in the works of individuals and 33.1% had someone vibrant alone who was 65 years of age or older. The average household size was 1.75 and the average associates size was 2.16.