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Santa Cruz County, Arizona facts for kids

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Santa Cruz County
Santa Cruz County Courthouse
Santa Cruz County Courthouse
Official seal of Santa Cruz County
Map of Arizona highlighting Santa Cruz County
Location within the U.S. state of Arizona
Map of the United States highlighting Arizona
Arizona's location within the U.S.
Country  United States
State  Arizona
Founded March 15, 1899
Named for Santa Cruz River
Seat Nogales
Largest city Nogales
 • Total 1,238 sq mi (3,210 km2)
 • Land 1,237 sq mi (3,200 km2)
 • Water 1.2 sq mi (3 km2)  0.1%%
 • Total 47,420
 • Estimate 
 • Density 38.304/sq mi (14.789/km2)
Time zone UTC−7 (Mountain)
Congressional district 3rd

Santa Cruz is a county in southern Arizona, United States. As of the 2010 census, its population is 47,420. The county seat is Nogales. The county was established in 1899. It borders Pima County to the north and west, Cochise County to the east, and the Mexican state of Sonora to the south.

Santa Cruz County includes the Nogales, Arizona Micropolitan Statistical Area, which is also included in the Tucson-Nogales, Arizona Combined Statistical Area.


Santa Cruz County, formed on March 15, 1899, out of what was then Pima County, is named after the Santa Cruz River, which was named in the late 17th century by Father Kino. Santa Cruz means "holy cross" in Spanish. After that Father Kino built the famous mission which still stands today at the Tumacácori National Historical Park.


According to the U.S. Census Bureau, the county has a total area of 1,238 square miles (3,210 km2), of which 1,237 square miles (3,200 km2) is land and 1.2 square miles (3.1 km2) (0.1%) is water. It is the smallest county by area in Arizona.

Adjacent counties and municipalities

Major highways

National protected areas


Historical population
Census Pop.
1900 4,545
1910 6,766 48.9%
1920 12,689 87.5%
1930 9,684 −23.7%
1940 9,482 −2.1%
1950 9,417 −0.7%
1960 10,808 14.8%
1970 13,966 29.2%
1980 20,459 46.5%
1990 29,676 45.1%
2000 38,381 29.3%
2010 47,420 23.6%
2019 (est.) 46,498 −1.9%
U.S. Decennial Census
1790–1960 1900–1990
1990–2000 2010–2018

2010 census

As of the 2010 census, there were 47,420 people, 15,437 households, and 11,992 families living in the county. The population density was 38.3 inhabitants per square mile (14.8/km2). There were 18,010 housing units at an average density of 14.6 per square mile (5.6/km2). 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:

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


Santa Cruz County Incorporated and Unincorporated areas
Map of the incorporated areas in Santa Cruz County.



Census-designated places

Unincorporated communities

County population ranking

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

county seat

Rank City/Town/etc. Population (2010 Census) Municipal type Incorporated
1 Nogales 20,837 City
2 Rio Rico 18,962 CDP
3 Tubac 1,191 CDP
4 Patagonia 913 Town
5 Sonoita 818 CDP
6 Tumacacori-Carmen 393 CDP
7 Amado 295 CDP
8 Beyerville 177 CDP
9 Elgin 161 CDP
10 Kino Springs 136 CDP

Images for kids

See also

Kids robot.svg In Spanish: Condado de Santa Cruz (Arizona) para niños

Black History Month on Kiddle
Famous African-American Activists:
Ralph Abernathy
Lillie Mae Bradford
Aurelia Browder
Nannie Helen Burroughs
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