Santa Cruz is a

county A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...

in southern

Arizona Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...

, United States. As of the 2020 census, the population is 47,669. The

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

is Nogales. The county was established in 1899. It borders

Pima County Pima County ( ) is a County (United States), county in the south central region of the U.S. state of Arizona, one of 15 List of counties in Arizona, counties in the state. As of the 2020 United States census, 2020 census, the population was 1 ...

to the north and west, Cochise County to the east, and the Mexican state of

Sonora Sonora (), officially Estado Libre y Soberano de Sonora (), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 72 ...

to the south. Santa Cruz County includes the Nogales, Arizona Micropolitan Statistical Area, which is also included in the

Tucson Tucson (; ; ) is a city in Pima County, Arizona, United States, and its county seat. It is the second-most populous city in Arizona, behind Phoenix, Arizona, Phoenix, with a population of 542,630 in the 2020 United States census. The Tucson ...

-Nogales, Arizona Combined Statistical Area.

History

Santa Cruz County, formed on March 15, 1899, out of what was then

, is named after the Santa Cruz River. The river originates in the Canelo Hills in the eastern portion of the county, crosses south into Mexico near the community of Santa Cruz, Sonora, and then bends northwards returning into the United States (and Santa Cruz County) east of Nogales. Father Eusebio Kino, an Italian explorer and

missionary A missionary is a member of a Religious denomination, religious group who is sent into an area in order to promote its faith or provide services to people, such as education, literacy, social justice, health care, and economic development.Thoma ...

in the service of the

Spanish Empire The Spanish Empire, sometimes referred to as the Hispanic Monarchy (political entity), Hispanic Monarchy or the Catholic Monarchy, was a colonial empire that existed between 1492 and 1976. In conjunction with the Portuguese Empire, it ushered ...

, named the Santa Cruz River–" holy cross" in Spanish–in the 1690s. In addition, Kino founded several missions to evangelize the different O'odham peoples living along the banks of the Santa Cruz River, including Missions San Cayetano del Tumacácori (1691) and San Gabriel de Guevavi (1691), as well as Los Reyes de Sonoita (1692) near Sonoita Creek. Along the river, but outside the boundaries of Santa Cruz County, Kino also founded Mission San Xavier del Bac (1692) near Tucson, Arizona, and Mission Santa Maria del Pilar (1693) in what is now Santa Cruz, Mexico. Kino's San Cayetano and San Gabriel missions were destroyed in the O'odham peoples' 1751 Pima Revolt and rebuilt as Missions Los Santos Ángeles de Guevavi (1751), San José de Tumacácori (1753), and San Cayetano de Calabazas (1756). The ruins of all three of these later missions are now protected by Tumacácori National Historical Park. Disease, warfare, overwork, and changes in land ownership during Spanish colonization led to the demographic decline of the O'odham peoples of Santa Cruz County.

Geography

According to the

United States Census Bureau The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, econ ...

, the county has a total area of , of which is land and (0.1%) is water. It is the smallest county by area in Arizona.

Adjacent counties and municipalities

–west, north * Cochise County–east * Nogales, Sonora, Mexico–south * Santa Cruz, Sonora, Mexico–south * Sáric, Sonora, Mexico–south

Major highways

* Interstate 19 * State Route 82 * State Route 83

National protected areas

Coronado National Forest The Coronado National Forest is a United States National Forest that includes an area of about 1.78 million acres (7,200 km2) spread throughout mountain ranges in southeastern Arizona and southwestern New Mexico. It is located in parts of ...

(part) * Las Cienegas National Conservation Area (part) * Tumacácori National Historical Park

Border crossings

There are three crossings of the U.S.-Mexico border in Nogales: the Dennis DeConcini Port of Entry (for vehicular and pedestrian traffic); the Nogales-Mariposa Port of Entry (in the western part of the city, for vehicular and pedestrian traffic); and the Morley Gate Port of Entry (for pedestrians only). Lochiel, a former mining and ranching border town, formerly had a border crossing, but the U.S. government shut the port of entry down in 1983.

Demographics

2020 census

2010 census

As of the

census A census (from Latin ''censere'', 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given Statistical population, population, usually displayed in the form of stati ...

of 2010, there were 47,420 people, 15,437 households, and 11,992 families living in the county. The population density was . There were 18,010 housing units at an average density of . The racial makeup of the county was 73.5% white, 0.7% American Indian, 0.5% Asian, 0.4% black or African American, 22.9% from other races, and 2.0% from two or more races. Those of Hispanic or Latino origin made up 82.8% of the population. The largest ancestry groups were: * 78.1% Mexican * 4.3%

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

* 3.4% Irish * 3.1% English * 2.3% American * 1.8%

Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance languag ...

Of the 15,437 households, 45.6% had children under the age of 18 living with them, 55.7% were married couples living together, 17.1% had a female householder with no husband present, 22.3% were non-families, and 19.0% of all households were made up of individuals. The average household size was 3.05 and the average family size was 3.51. The median age was 35.6 years. The median income for a household in the county was $36,519 and the median income for a family was $40,933. Males had a median income of $30,666 versus $25,135 for females. The per capita income for the county was $16,209. About 20.6% of families and 25.2% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 36.8% of those under age 18 and 15.7% of those age 65 or over.

2000 census

As of the

of 2000, there were 38,381 people, 11,809 households, and 9,506 families living in the county. The

population density Population density (in agriculture: Standing stock (disambiguation), standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geog ...

was . There were 13,036 housing units at an average density of . The racial makeup of the county was 76.0%

White White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...

, 0.4%

Black Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ...

African American African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...

, 0.7% Native American, 0.5% Asian, 0.1%

Pacific Islander Pacific Islanders, Pasifika, Pasefika, Pacificans, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe th ...

, 19.7% from other races, and 2.6% from two or more races. 80.8% of the population were

Hispanic The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...

or Latino of any race. 79.7% of the population reported speaking Spanish at home, while 19.5% speak English. There were 11,809 households, of which 45.6% had children under the age of 18 living with them, 61.3% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognised union between people called spouses. It establishes rights and obligations between them, as well as between them and their children (if any), and b ...

living together, 15.4% had a female householder with no husband present, and 19.5% were non-families. 16.5% of all households were made up of individuals, and 7.1% had someone living alone who was 65 years of age or older. The average household size was 3.23 and the average family size was 3.66. In the county, the population was spread out, with 33.6% under the age of 18, 8.2% from 18 to 24, 26.6% from 25 to 44, 20.8% from 45 to 64, and 10.7% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 91.7 males. For every 100 females age 18 and over, there were 86.2 males. The median income for a household in the county was $29,710, and the median income for a family was $32,057. Males had a median income of $27,972 versus $21,107 for females. The

per capita income Per capita income (PCI) or average income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such ...

for the county was $13,278. About 21.40% of families and 24.50% of the population were below the

, including 29.% of those under age 18 and 23.2% of those age 65 or over.

Communities

City

* Nogales (county seat)

Town

Patagonia Patagonia () is a geographical region that includes parts of Argentina and Chile at the southern end of South America. The region includes the southern section of the Andes mountain chain with lakes, fjords, temperate rainforests, and glaciers ...

Census designated places

* Amado * Beyerville * Elgin * Kino Springs * Rio Rico * Sonoita *

Tubac Tubac is a census-designated place (CDP) in Santa Cruz County, Arizona, United States. The population was 1,191 at the 2010 census. The place name "Tubac" is an English borrowing from a Hispanicized form of the O'odham name ''Cuwak'', which ...

* Tumacacori-Carmen

Unincorporated communities

* Harshaw * Oro Blanco *

Carmen ''Carmen'' () is an opera in four acts by the French composer Georges Bizet. The libretto was written by Henri Meilhac and Ludovic Halévy, based on the novella of the same title by Prosper Mérimée. The opera was first performed by the O ...

* Lochiel * Trench Camp * Casa Piedra * Madera Canyon * Washington Camp

Ghost Towns

Alto The musical term alto, meaning "high" in Italian (Latin: '' altus''), historically refers to the contrapuntal part higher than the tenor and its associated vocal range. In four-part voice leading alto is the second-highest part, sung in ch ...

* Canelo * Calabasas * Duquesne * Fort Buchanan * Harshaw * Lochiel * Oro Blanco *

Ruby Ruby is a pinkish-red-to-blood-red-colored gemstone, a variety of the mineral corundum ( aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapph ...

Education

School districts include: K-12: * Nogales Unified School District * Santa Cruz Valley Unified School District Secondary: * Patagonia Union High School District Elementary: * Patagonia Elementary District * Santa Cruz Elementary District * Sonoita Elementary District

County population ranking

The population ranking of the following table is based on the 2010 census of Santa Cruz County. † county seat

Politics

Owing to its border location and Hispanic majority population, Santa Cruz is a strongly Democratic county, but it has been shifting Republican by considerable numbers. The last Republican to win the county was

George H. W. Bush George Herbert Walker BushBefore the outcome of the 2000 United States presidential election, he was usually referred to simply as "George Bush" but became more commonly known as "George H. W. Bush", "Bush Senior," "Bush 41," and even "Bush th ...

in 1988, and although the Republicans won the county in six consecutive elections from 1968 to 1988, three of these wins were by very narrow margins. Following the trends seen in majority Hispanic counties across the United States,

Joe Biden Joseph Robinette Biden Jr. (born November 20, 1942) is an American politician who was the 46th president of the United States from 2021 to 2025. A member of the Democratic Party (United States), Democratic Party, he served as the 47th vice p ...

defeated Donald Trump with 67.1% of the popular vote in the county, a slightly lower margin than Hillary Clinton's 71.1% vote share in 2016. Trump's gains were far higher than Biden's losses (at nearly 8%), due to a combination of third parties losing votes and higher turnout. Despite this rightward shift in the vote share, Santa Cruz County remained as the most Democratic-leaning county in Arizona until 2024, when

Apache The Apache ( ) are several Southern Athabaskan language-speaking peoples of the Southwestern United States, Southwest, the Southern Plains and Northern Mexico. They are linguistically related to the Navajo. They migrated from the Athabascan ho ...

and Coconino counties voted slightly more Democratic than Santa Cruz County, as Trump had the best performance for a Republican in the county since their last win in 1988, cracking 40% in the county for the first time since then.

Notable People

Elizabeth Gutfahr, former elected county treasurer who confessed to embezzling more than $38 million between 2012 and 2024.

Economy

Because it is the state's smallest county, Santa Cruz County's economic activity is also smaller. Its agriculture consists primarily of

forage Forage is a plant material (mainly plant leaves and stems) eaten by grazing livestock. Historically, the term ''forage'' has meant only plants eaten by the animals directly as pasture, crop residue, or immature cereal crops, but it is also used m ...

/ hay, and the

cattle Cattle (''Bos taurus'') are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus '' Bos''. Mature female cattle are calle ...

products raised on that pasture and hay are almost 100% of farm products annually.

References

External links

Nogales Chamber of Commerce Website

County Website

Geologic Map of the Patagonia Mountains, Santa Cruz County, Arizona

U.S. Geological Survey The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March ...

{{coord, 31, 32, N, 110, 50, W, region:US-AZ_type:adm2nd_source:dewiki, display=title 1899 establishments in Arizona Territory Populated places established in 1899 Hispanic and Latino American culture in Arizona