A county is a geographical area used or formerly used in several countries for administration or other purposes. A single list of former counties is not practical so there are several more defined lists arranged by country or smaller area:
Australia
Counties of Tasmania
Canada
List of former counties of Quebec
List of former counties of Manitoba (1875–1890) Former counties of Ontario Denmark Counties of Denmark, which were abolished in 2007 Kingdom of Hungary List of administrative divisions of the Kingdom of Hungary (–1918) List of counties of the Kingdom of Hungary located in Slovakia counties in modern-day Slovakia that were part of the Kingdom of Hungary until 1920 New Zealand List of counties of New Zealand (1876–1989) United Kingdom **Ceremonial counties of England Shires of Scotland Preserved counties of Wales United States List of former United States counties