Hillandale is a cdp located in Montgomery County, in the state of Maryland (MD), United States. Nestled in the South Atlantic division of the South region, it covers an area of 1.2 square miles (3.0 km²) and sits at an elevation of 280 ft. With a population of approximately 3,054 residents, Hillandale offers a peaceful, rural atmosphere.
The town's population is composed of about 49.9% males and 50.1% females, and it has a population density of 462.90 people per square mile (950.93/km²). Hillandale lies at a latitude of 39.03 and a longitude of -76.97, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (0%), followed by English (8.3%), German (7.6%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 20903.