The Coast Province was one of Kenya's eight provinces. It contained all of the country's coastline on the Indian Ocean. Its capital city was Mombasa. It was inhabited by the Mijikenda and Swahili peoples, among others. The province covered an area of 79,686.1 km2.

Mombasa County is one of the 47 counties of Kenya. Its capital is Mombasa. In terms of economy it is second after Nairobi. Initially it was one of the former districts of Kenya but in 2013 it was reconstituted as a county, on the same boundaries. It is the smallest county in Kenya, covering an area of 229.7 km2 excluding 65 km2 of water mass. The county is situated in the south eastern part of the former Coast Province. It borders Kilifi County to the north, Kwale County to the south west and the Indian Ocean to the east. Administratively, the county is divided into seven divisions, eighteen locations and thirty sub-locations.