Mr Cooper was fatally injured when he was struck by a car at Barley Hill, on the Clonakilty to Skibbereen Road, just west of Rosscarbery at around 7.10pm on Tuesday. He was pronounced dead at the scene and his body was removed to Cork University Hospital for a post mortem.
The driver of the car, a man in his late 60s, was uninjured.
The road was closed for a number of hours to facilitate a forensic collision examination and local diversions were put in place.
The route re-opened early yesterday afternoon.
Gardaí are appealing for witnesses, particularly anyone who was on that road between 6.30pm and 7.10pm on the evening in question to contact them.
Anyone with any information is asked to call Clonakilty Garda station on 023 8821570, the Garda Confidential Line 1800 666 111 or any garda station.
Mayor of County Cork, John Paul O’Shea, described the fatality as a dreadful tragedy for the teenager’s family and for West Cork as a community.
“The loss of any young person in such tragic circumstances is such a sad occasion for the community in west Cork,” Mr O’Shea told the Evening Echo.
“I want to extend my deepest sympathies to the young person’s family, friends, and to the wider community. It is in times like these that we see how important our family and friends are,” he said.
Meanwhile, a 38-year-old man is fighting for his life at Cork University Hospital after he was electrocuted at a site in Mitchelstown, Co Cork.
The man was working near turbine type machinery at a factory on the outskirts of the town at around 10am yesterday when the accident occurred.
It is understood a metal spanner being used by the man may have come into contact with a live electrical source.
The Health and Safety Authority has launched an investigation in to the incident. The accident site was sealed off for a technical examination.