Eastlawn Gardens is a census-designated place (CDP) in Upper Nazareth Township in Northampton County, Pennsylvania. The population of Eastlawn Gardens was 3,307 at the 2010 census. Eastlawn Gardens is allocation of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th most populous metropolitan Place in the U.S. as of the 2020 census.

Eastlawn Gardens is located at 40°44′57″N 75°17′55″W / 40.74917°N 75.29861°W / 40.74917; -75.29861 (40.749065, -75.298750). According to the U.S. Census Bureau, Eastlawn Gardens has a total Place of 1.7 square miles (4.4 km²), of which 1.7 square miles (4.4 km) is land and 0.04 square miles (0.10 km²) (1.20%) is water.

As of the census of 2000, there were 2,832 people, 1,010 households, and 804 families residing in the CDP. The population density was 1,709.6 people per square mile (658.7/km²). There were 1,028 housing units at an average density of 620.6/sq mi (239.1/km). The racial makeup of the CDP was 97.81% White, 0.28% African American, 0.18% Native American, 0.53% Asian, 0.74% from supplementary races, and 0.46% from two or more races. Hispanic or Latino of any race were 1.41% of the population.

There were 1,010 households, out of which 42.9% had kids under the age of 18 living past them, 69.2% were married couples active together, 8.0% had a female householder with no husband present, and 20.3% were non-families. 16.6% of all households were made taking place of individuals, and 9.0% had someone buzzing alone who was 65 years of age or older. The average household size was 2.80 and the average relations size was 3.17.