Arizona County Creation Dates and Parent CountiesEdit This Page

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United States Gotoarrow.png Arizona Gotoarrow.png County Creation Dates

Arizona Territory was created on 24 February 1862 from the west half of New Mexico Territory. All previous New Mexico counties were discontinued, but it was not until 10 November 1864, when the first four Arizona counties were created. Pah-Ute county is the only county discontinued, in 1871. All the other created counties still continue. The last county created was La Paz on 27 April 1983.

In the present day there are a total of 15 counties; 8 of them named for Native American Tribes, 2 of them for People, 2 of them for Mountains, 2 of them for Rivers, and 1 of them for a Town.

The information listed below is useful in identifying which county your ancestor lived in at what time. Once you have that information, you can contact that county's offices for records of your ancestor. If you don't find records in the identified county, look in nearby counties. Some changes have been made to the boundaries of the counties.


Name of County Date Formed Boundary
Changes
Parent County Counties Created by Boundary Changes
Apache 1879 Feb 14 Details Yavapai Graham 1881, Navajo 1895
Cochise 1881 eb 1 Details Pima none
Coconino 1891 Feb 19 Details Yavapai none
Gila 1881 eb 8 Details Maricopa, Pinal none
Graham 1881 Mar 10 Details Apache, Pima Greenlee 1909
Greenlee 1909 Mar 10 Details Graham none
La Paz 1983 Apr 27 Details Yuma none
Maricopa 1871 Feb 14 Details Yavapai Pinal 1875, Gila 1881
Mohave 1864 Nov 10 Details Arizona Territory Pah-Ute 1865, portion to Nevada 1866
Navajo 1895 Mar 21 Details Apache none
Pah-Ute 1865 Dec 22 Details Mohave portion to Nevada 1866, disbanded 1871
Pima 1864 Nov 10 Details Arizona Territory Pinal 1875, Cochise 1881, Graham 1881, Santa Cruz 1899
Pinal 1875 eb 1 Details Pima, Maricopa
Gila 1881
Santa Cruz 1899 Mar 15 Details Pima none
Yavapai 1864 Nov 10 Details Arizona Territory Maricopa 1871, Apache 1879, Coconino 1891
Yuma 1864 Nov 10 Details Arizona Territory La Paz 1983

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  • This page was last modified on 19 July 2014, at 02:04.
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