<Tr> <Th> Water </Th> <Td> 49,510 km (19,120 sq mi) </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 23 ° 00 ′ N 102 ° 00 ′ W ﻿ / ﻿ 23.000 ° N 102.000 ° W ﻿ / 23.000; - 102.000 Coordinates: 23 ° 00 ′ N 102 ° 00 ′ W ﻿ / ﻿ 23.000 ° N 102.000 ° W ﻿ / 23.000; - 102.000 </Td> </Tr> <Tr> <Th_colspan="2"> Borders </Th> </Tr> <Tr> <Th> United States </Th> <Td> 3,141 km (1,952 mi) </Td> </Tr>

A large urban area that contains more than one city it dominates the geographic region it occupies