Download coordinates as: County of Carnarvon is a cadastral unit located in the Australian state of South Australia which covers the full extent of Kangaroo Island.

[3] The county was named after Henry Herbert, 4th Earl of Caernarfon, Wales who served two terms as the British Secretary of State for the Colonies.

[1] The following twelve hundreds were proclaimed within the County between the years 1874 and 1960 - Dudley in 1874, Menzies in 1878, Haines in 1883, Cassini in 1884, MacGillivray in 1906, Seddon in 1908, Newland in 1909, Duncan in 1909, Ritchie in 1909, McDonald in 1910, Gosse in 1931, and Borda in 1960.

It covers an area of 400 square kilometres (156 sq mi) and was named after John Duncan, a South Australian politician and pastoralist.

It covers an area of 364 square kilometres (140.5 sq mi) and was named after William Christie Gosse, an explorer and a former Deputy Surveyor-General in South Australia.

It covers an area of 370 square kilometres (141 sq mi) and was named after William Haines, a South Australian politician.

It covered an area of 320 square kilometres (124 sq mi) and was named after a Lord Menzies who is described as being a friend of William Jervois, the tenth Governor of South Australia.

It covers an area of 400 square kilometres (154 sq mi) and was named after John Newlands, a South Australian politician.

It covers an area of 400 square kilometres (154 sq mi) and was named after George Ritchie, a South Australian politician.