Greenleaf is a city in Canyon County, Idaho, United States. The population was 846 at the 2010 census. Greenleaf is part of the Boise-Nampa metropolitan area. The town was established by Quakers in the early-1900s and is named after Quaker poet and abolitionist John Greenleaf Whittier.
Greenleaf is located at 43°40′16″N 116°48′59″W (43.671142, -116.816480).
According to the United States Census Bureau, the city has a total area of 0.73 square miles (1.89 km2), all of it land.
As of the census of 2010, there were 846 people, 299 households, and 226 families residing in the city. The population density was 1,158.9 inhabitants per square mile (447.5/km2). There were 316 housing units at an average density of 432.9 per square mile (167.1/km2). The racial makeup of the city was 87.1% White, 0.4% African American, 0.5% Native American, 0.4% Asian, 9.6% from other races, and 2.1% from two or more races. Hispanic or Latino of any race were 19.4% of the population.
There were 299 households, of which 37.8% had children under the age of 18 living with them, 61.2% were married couples living together, 10.7% had a female householder with no husband present, 3.7% had a male householder with no wife present, and 24.4% were non-families. 19.7% of all households were made up of individuals, and 8.1% had someone living alone who was 65 years of age or older.