Scotland a territorial parish structure, with every community in Scotland having a local congregation. Scotland also has a significant Roman Catholic population, 19% professing that faith, particularly in Greater Glasgow and the north-west. After the Reformation, Roman Catholicism in Scotland continued in the Highlands and some western islands like Uist and Barra, and it was strengthened during the 19th century by immigration from Ireland. Other Christian denominations in Scotland include the Free Church of Scotland, and various other Presbyterian offshoots. Scotland's third largest church is the Scottish Episcopal Church. Islam is the largest non-Christian religion (estimated at around 75,000, which is
Scotland and is probably the oldest living thing in Europe. Although the number of native vascular plants is low by world standards, Scotland's substantial bryophyte flora is of global importance. The population of Scotland at the 2001 Census was 5,062,011. This rose to 5,295,400, the highest ever, at the 2011 Census. The most recent ONS estimate, for mid-2017, was 5,424,800. In the 2011 Census, 62% of Scotland's population stated their national identity as 'Scottish only', 18% as 'Scottish and British', 8% as 'British only', and 4% chose 'other identity only'. Although Edinburgh is the capital of Scotland, the largest city is