Conungum or Kanungum, meaning a "fixed line" or "boundary" was the Indian name for Calverton which it was officially named in 1868 when Bernard J. Calvert traveled to Washington to request a post office for the town, and appointment as its first postmaster. Calverton was also called Baiting Hollow after the rail road was brought through in 1844 and Hulse's Turnout as a mark for travelers to head North to Hulse's Place in Wading River.
The marshland around Calverton was used for farmland and proved to be and ideal spot for cranberry bogs. In the early 1900s, the cranberry business was at its peak and employed hundreds of women and children who picked the berries for wages of $2.00 per day. In 1953, 4000 acres in Calverton was leased by Grum man Aircraft Engineering Co. from the United States Navy for aircraft assembly including the Tomcat and E-2C Hawkeye. Grumman downsized in 1995 closing its Calverton doors.
Calverton is home to the National Cemetery and occupies over 1,000 acres of which veterans and their families are buried.