Hillgrove is an unincorporated community located in the southern San Gabriel Valley of eastern Los Angeles County, California.

[2] A former section was a census-designated place, that became part of neighboring Hacienda Heights after the 1970 census.

The elevation of the community is 331 feet (101 m) above sea level.

[5] The community is part of the Hacienda-Puente Unified School District.

[6] Hillgrove Center Preschool is located in the community.