The area is not precisely defined. In general, the area is known for the strict zoning regulations the town of Colonie has made that have prevented commercial development and tree-clearing in development.
The hamlet is named after John Campbell, 4th Earl of Loudoun and was originally a 19th-century summer resort for some of Albany's wealthiest residents. Loudon Road, known as Old Plank Road in the early 19th century, is lined with several historic Jeffersonian mansions. Loudonville started as a hamlet on Loudon Road (originally a plank road), at the intersection of Crumitie Road.  Ireland's Corners was a separate hamlet to the north at the intersection of Loudon Road and Menand/Osborne Road, with a post office. Ireland's Corners is named for Elias H. Ireland who in 1832 bought the heavily wooded area from the Patroon, Stephen Van Rensselaer. In 1871 the post office at Ireland's Corners was renamed Loudonville.
The community is located directly north of Albany, New York and south of Newtonville. The hamlet is centered on the original Ireland's Corners, the intersection of U.S. Route 9 with Osborne Road (County Route 154)/Menand Road (NY Route 378) (west bound name/east bound names respectively), with the northwest corner bisected by Old Niskayuna Road (County Route 152). Though as a hamlet it has vague borders the census designated place of Loudonville had definite concrete borders.
Schuyler Meadows Club: The Club was founded in 1926 by residents of Loudonville who did not wish to travel to the Albany Country Club, which at the time was located at the current site of the uptown campus of the University at Albany, SUNY. The clubhouse, built in 1927, is modeled on the central portion of George Washington's Mount Vernon home.