Yardville is an unincorporated community and census-designated place (CDP) located within Hamilton Township, in Mercer County, in the U.S. state of New Jersey. As of the 2010 United States Census, the CDP's population was 2,945. Before the 2010 Census, the area was part of the Yardville-Groveville CDP.

Geography

According to the United States Census Bureau, the CDP had a total area of 4.074 square miles (10.551 km), including 4.051 square miles (10.492 km) of land and 0.023 square miles (0.059 km) of water (0.56%).

Demographics

Historical population

Census	Pop.	Note	%±
2020	6,965		—
U.S. Decennial Census

2010 Census

The 2010 United States census counted 7,186 people, 2,757 households, and 2,048 families in the CDP. The population density was 1,773.9 per square mile (684.9/km). There were 2,841 housing units at an average density of 701.3 per square mile (270.8/km). The racial makeup was 92.93% (6,678) White, 2.80% (201) Black or African American, 0.07% (5) Native American, 2.34% (168) Asian, 0.00% (0) Pacific Islander, 1.00% (72) from other races, and 0.86% (62) from two or more races. Hispanic or Latino of any race were 4.31% (310) of the population.

Of the 2,757 households, 28.4% had children under the age of 18; 61.2% were married couples living together; 9.0% had a female householder with no husband present and 25.7% were non-families. Of all households, 21.5% 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 2.60 and the average family size was 3.03.

20.0% of the population were under the age of 18, 7.8% from 18 to 24, 23.5% from 25 to 44, 32.5% from 45 to 64, and 16.2% who were 65 years of age or older. The median age was 44.3 years. For every 100 females, the population had 96.5 males. For every 100 females ages 18 and older there were 91.6 males.