[4] According to the United States Census Bureau, the town has a total area of 1.00 square mile (2.59 km2), all land.[5] The town of Deer Park traces its history back to the 1770s, long before Garrett County was established.Deer Park saw immense growth during the mid to late 1880s, primarily because of the Baltimore and Ohio Railroad.The Deer Park Hotel, constructed in 1872, served as the focal point for visitors who came to the mountaintop to enjoy the area's scenery and cool temperatures during the summer months.[6] As automobiles became more readily available in the early 1900s, transportation was no longer limited to railroad service, and Deer Park lost its appeal as a vacation destination.MD 135 itself provides access to the towns of Mountain Lake Park and Oakland to the west and to Luke and Westernport to the east.