Antique Real Photo Postcard, circa 1910-1915. Newmarket, New Hampshire featuring 21 views of the city arranged on a single postcard. Divided back, postmarked from New Hampshire. Condition: This is an original photo postcard, not a copy or reproduction. It is in very good condition with tiny handwriting on a few of the images. Comments: Newmarket is a town in Rockingham County, New Hampshire, United States. The population was 8,936 at the 2010 census. Some residents are students and employees at the nearby University of New Hampshire in Durham. Incorporated in 1727, Newmarket is one of six towns granted by Massachusetts in the last year of the reign of King George I. It started as a parish of Exeter, and was granted full town privileges by the legislature in 1737. It was probably named for Newmarket in Suffolk, England.