See: List of heritage railways, Heritage railways in Northern Ireland, railway, mountain railway, List of Conservation topics, Conservation in the Republic of Ireland
... the age of 18, 9.4% from 18 to 24, 34.6% from 25 to 44, 19.4% from 45 to 64, and 10.6% who are 65 years of age or older. The median age is 34 years. For every 100 ...