Urban centres’ and ‘urban clusters’ means territorial units classified in cities and towns and suburbs using the grid-based typology established in accordance with Article 4b(2) of Regulation (EC) No 1059/2003

Urban clusters (or moderate-density clusters): a cluster of contiguous grid cells of 1 km² (in other words, grid cells that share a common border including grid cells that only touch diagonally at corners) with a population density of at least 300 inhabitants per km² and a minimum population of at least 5 000 inhabitants.