Westmere is a hamlet in the town of Guilderland, Albany County, New York, United States. Since the 1970 Census, a census-designated place has been established with the name of Westmere for tabulating the population of what the census has defined as the boundaries for Westmere. The population was 7,284 at the 2010 census. It is a suburb of the neighboring city of Albany. U.S. Route 20 bisects the community and is the major thoroughfare and main street.