Santa Cruz County, Arizona GenealogyEdit This Page

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United States > Arizona > Santa Cruz County


County Courthouse


Santa Cruz County lies directly south of Tucson and Pima Counties.  The town of Nogales is a major border crossing between the United States and Mexico, and is part of a 'twin border city' situation. Nogales is also the county seat.

A river runs north out of Mexico towards Tucson, also named the Santa Cruz.

The historic Catholic mission near Tubac on I-19 is significant in the history of the area. However, any records that were produced when this was actively a community and an active parish are not kept there, but may be with the Diocese in Tucson. Other missions are also nearby, mainly San Xavier which is in Pima County closer to Tucson.

Parent County

1899--Santa Cruz County was created 15 March 1899 from Pima and Cochise Counties.
County seat: Nogales [1]

Boundary Changes

Record Loss


Populated Places

Agua Linda Carmen Kino Springs Otero Sotos Crossing (hist.)
Alto Casa Piedra Lochiel Partridge (hist.) Trench Camp
Amado Duquesne Madera Canyon Patagonia Tubac
Beyerville Elgin Nogales Rio Rico Tumacacori
Calabasas Hacienda Los Encino Old Glory Ruby Washington Camp
Canelo Harshaw Oro Blanco Sonoita

Neighboring Counties




LDS Ward and Branch Records

  • Nogales



Local Histories






Vital Records

Many early marriages are listed on the Western States Marriage Index.

The Tumacacori National Historical Park has created a website with searchable Spanish Mission Records as well as an annotated bibliography of the Tohono O'odham (Papago Indians).  Along with transcribed marriage records from the Cathedral of Culiacan in spanish, Part 1, Part 2, Part 3.

Societies and Libraries

Web Sites

  • USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.
  • Family History Library Catalog


  1. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).


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