Fawn Grove is a borough in York County, Pennsylvania, United States. The population was 452 at the 2010 census. It is served by the South Eastern School District which provides a public education.
Fawn Grove is located at 39°43′48″N 76°27′3″W (39.730004, -76.450761).
According to the United States Census Bureau, the borough has a total area of 1.6 square miles (4.1 km2), all of it land.
At the 2000 census there were 463 people, 182 households, and 139 families living in the borough. The population density was 289.2 people per square mile (111.7/km²). There were 198 housing units at an average density of 123.7 per square mile (47.8/km²). The racial makeup of the borough was 99.35% White, 0.22% African American, 0.22% Asian, and 0.22% from two or more races. Hispanic or Latino of any race were 1.08%.
Of the 182 households 24.2% had children under the age of 18 living with them, 64.8% were married couples living together, 9.3% had a female householder with no husband present, and 23.1% were non-families. 17.6% of households were one person and 8.8% were one person aged 65 or older.