2011 census On census day 2011, 27 March 2011, there were 6,541 people living in Kilkeel (2,557 households), accounting for 0.36% of the Northern Ireland total. Of these: • 21.27% were aged under 16 years and 15.15% were aged 65 and over; • 51.49% of the usually resident population were female and 48.51% were male; • 54.00% belong to or were brought up as Protestants and 40.99% belong to or were brought up as Catholics; • 54.67% indicated that they had a British national identity, 27.60% had a Northern Irish national identity and 20.29% had an Irish national identity (respondents could indicate more than one national identity); • 35 years was the average (median) age of the population; • 8.93% had some knowledge of Ulster-Scots and 8.82% had some knowledge of
Irish. In 2011, 44.31% of persons in the administrative area indicated that they had an Irish national identity, 30.39% had a Northern Irish national identity and 28.53% had a British national identity.
2021 census On census day in 2021, 21 March 2021, there were 6,633 people living in Kilkeel. • 49.28% indicated that they had a British national identity, 32.22% had a Northern Irish national identity and 23.55% had an Irish national identity (respondents could indicate more than one national identity).
Religion In 1659, 80% of inhabitants were Catholic, and by 1901, this had fallen to half. 60% of the remainder were Presbyterians and most of the rest were Church of Ireland. ==Education==