A map of districts in Northern Ireland showing the percentage difference of people who identified themselves as "British only" and "Irish only" according to the 2011 Census. "Legend:" Over 40% more Irish 35-40% more Irish 30-35% more Irish 25-30% more Irish 20-25% more Irish 15-20% more Irish 10-15% more Irish 5-10% more Irish 0-5% more Irish 0-5% more British 5-10% more British 10-15% more British 15-20% more British 20-25% more British 25-30% more British 30-35% more British 35-40% more British 40-45% more British 45-50% more British Over 50% more British NUTS 3 regions of Northern Ireland map.svg