He was born in Boston, Massachusetts Bay Colony, on June 9, 1673, the son of David Copp, and Obedience Topliff. His father was a cordwainer, a clerk of the market, and a sealer of leather. He was also a surveyor and adviser to selectmen of Boston on matters dealing with the laying of bounds for highways and property listings. John Copp moved to Stamford, Connecticut Colony, while still in his twenties. There he married the widow Mary Jagger Phelps on March 16, 1698, but soon thereafter she died. He worked in Stamford for some time as a schoolteacher.
In 1699, he temporarily moved to Bedford On November 14, 1699, he was granted 23 acres with the condition that he settle on the land for three years. Copp was appointed to a committee to negotiate with the Natives to purchase more land. By February 1700, he was appointed town treasurer and chief surveyor. As town surveyor, he laid out the lots and roads of the town.
Life in Norwalk
In 1701, a town meeting in Norwalk, Copp was hired as a schoolteacher. In 1705, the selectmen of Norwalk recommended that Copp apply for a medical license. He was subsequently granted a license. On July 24, 1711, at a meeting in New Haven, the Governor's Council of Assistants voted to dispatch Copp as a surgeon with a Connecticut regiment which was assigned to attack the French in Port Royal. Whether or not Copp actually had any medical training is not known.
On May 9, 1706, the Connecticut General Assembly appointed Captain Jonathan Selleck, David Waterbury and John Copp to visit the area north of Norwalk, and south of Danbury for the purpose of inspecting the land for a settlement. However, complications arise and no action was taken. On May 3, 1708, John Copp and John Raymond, Jr. visited the area. They may have camped at Settlers Rock at the south edge of today’s Ridgefield Cemetery on North Salem Road. They reported that the land was good and would sustain 30 families or more. As a result, about 20,000 acres of land were purchased from Catoonah on behalf of the Ramapoo Indians. In 1710, the original proprietors of Ridgefield chose John Copp, Josiah Starr and Major Peter Burr to survey their land. Copp was Ridgefield’s first doctor, first schoolmaster and first Town Clerk. He recorded all the land sales, took the minutes at town meetings and listed all marriages, births, and deaths in the town records. When the Reverend Hauley arrived in 1712, Copp returned to Norwalk. Copp's Island, Copp’s Hill Road, Copp’s Hill Shopping Plaza and Copp’s Mountain are all named in his honor.