The lands administrative divisions of New South Wales refers to the 141 counties within the Colony of New South Wales, that later became the Australian state of New South Wales.
The counties were further subdivided into 7,419 parishes. There are also three land divisions, approximately one hundred land districts, and several other types of districts as well as land boards used at various periods. There were also thirteen hundreds proclaimed in Cumberland County, which were later abolished. These divisions are part of the lands administrative divisions of Australia. Unlike the local government areas of New South Wales, which have gone through restructuring periods by the government, the counties have been the same since the nineteenth century.
The first county proclaimed was Cumberland on 6 June 1788. Northumberland was named in 1804. Several other counties were established around Sydney; by the 1820s there were nine counties (see 1828 and 1832 maps). They were: Roxburgh, Northumberland, Durham, Westmoreland, Cumberland, Argyle, Camden, Ayr and Cambridge. They were in the approximate area of the present day cadastral units except that some of them were larger and took up land which was in 1834 assigned to other counties. Ayr and Cambridge were not used in the 1834 counties, taking up area which is approximately in what became Macquarie County and Brisbane County.