|Pima County and the state of Arizona|
|• Total||10.1 sq mi (26.2 km2)|
|• Land||10.1 sq mi (26.2 km2)|
|• Water||0.0 sq mi (0.0 km2)|
|Elevation||2,621 ft (799 m)|
|• Density||366.5/sq mi (141.3/km2)|
|Time zone||MST (no DST) (UTC-7)|
|GNIS feature ID||1853167|
Summit is located at 1(32.063213, -110.943549).
According to the United States Census Bureau, the CDP has a total area of 10.1 square miles (26 km2), all of it land.
As of the census2 of 2000, there were 3,702 people, 1,144 households, and 871 families residing in the CDP. The population density was 365.8 people per square mile (141.2/km²). There were 1,259 housing units at an average density of 124.4/sq mi (48.0/km²). The racial makeup of the CDP was 65.88% White, 0.51% Black or African American, 2.22% Native American, 0.14% Asian, 0.03% Pacific Islander, 25.96% from other races, and 5.27% from two or more races. 63.45% of the population were Hispanic or Latino of any race.
There were 1,144 households out of which 46.7% had children under the age of 18 living with them, 55.6% were married couples living together, 13.4% had a female householder with no husband present, and 23.8% were non-families. 18.4% of all households were made up of individuals and 5.9% had someone living alone who was 65 years of age or older. The average household size was 3.24 and the average family size was 3.68.
In the CDP the population was spread out with 34.8% under the age of 18, 10.0% from 18 to 24, 29.8% from 25 to 44, 18.4% from 45 to 64, and 6.9% who were 65 years of age or older. The median age was 29 years. For every 100 females there were 107.3 males. For every 100 females age 18 and over, there were 103.7 males.
The median income for a household in the CDP was $28,485, and the median income for a family was $31,806. Males had a median income of $21,316 versus $21,333 for females. The per capita income for the CDP was $11,274. About 22.0% of families and 26.2% of the population were below the poverty line, including 42.9% of those under age 18 and 9.0% of those age 65 or over.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.