Calcium is a cdp located in Jefferson County, in the state of New York (NY), United States. Nestled in the Middle Atlantic division of the North-east region, it covers an area of 5.6 square miles (14.0 km²) and sits at an elevation of 472 ft. With a population of approximately 3,346 residents, Calcium offers a peaceful, rural atmosphere.
The town's population is composed of about 50.09% males and 49.91% females, and it has a population density of 598.57 people per square mile (231.11/km²). Calcium lies at a latitude of 44.03 and a longitude of -75.84, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (5.3%), followed by English (5%), German (11%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 13616.