Montezuma Pass at Coronado National Memorial. The United States / Mexican border fence can be seen in the middle of this photograph. Mexico is on the right / south side of the fence.
Geography
Ramsey Canyon
According to the United States Census Bureau, the CDP has a total area of 110.9 per square mile (42.8/km2), all land. The CDP elevation is fluctuates greatly, but is measured at 4,835 feet (1,474m) above sea level as measured at the Hereford Post Office. Sierra Vista Southeast includes the Huachuca Mountains and part of the San Pedro River. The highest point in the area is Miller Peak in the Huachuca Mountains at 9,470 feet (2,890m) above sea level.
Sierra Vista Southeast is 69 miles (111km) southeast of Tucson and 8.5 miles (13.7km) north of the United States–Mexico border.
The CDP is built along the San Pedro River, a perennial river. It is the last major undammed desert river in the American Southwest, and it is of major ecological importance as it hosts two-thirds of the avian diversity in the United States, including 100 species of breeding birds and almost 300 species of migrating birds.
In the Köppen climate classification system, Sierra Vista Southeast falls within the typical cold semi-arid climate (BSk) of mid-altitude Arizona. Fall and spring, like most other parts of Arizona, are very dry. Winters are cool to cold with frosts which can occasionally be hard freezes; frost can be expected to stop in mid- to late April. Spring, like fall, spends about half of itself within the frost season. Summer starts off dry, but progressively gets wetter as the monsoon season approaches. The city has a fairly stable climate with very little humidity. However, the North American Monsoon can bring torrential rains during the months of July and August and will produce almost half the yearly rainfall in just those two months alone. Due to the dry climate the rest of the year and the CDP's high elevation, daily winter low temperatures range from 20 to 30°F (−6.7 to −1.1°C) on average and up to 50°F (10.0°C) on rare occasions when moist fronts bring warm air from the Gulf of California. Snow is not a common sight in the CDP, though some years the city can receive several inches of snow and other years it will receive none. However, a snow-capped Miller Peak and Carr Peak in the Huachuca Mountains is a common sight for four to five months every year.
As of the census[7] of 2020, there were 14,428 people in the CDP. The population density was 130.1 per square mile (50.2/km2). There were 6,659 housing units at an average density of 60 per square mile (23/km2). The racial makeup of the CDP was 72% White, 1.5% Black or African American, 1.1% Native American, 1.4% Asian, 0.2% Pacific Islander, 5% from other races, and 12.7% from two or more races. 18.7% of the population were Hispanic or Latino of any race. Of the total population, 6.9% was foreign born.
There were 6,659 households, out of which 22.4% had children under the age of 18 living with them, 47.6% were married couples living together, 28.8% had a female householder with no spouse/partner present, 19.9% had a male householder with no spouse/partner present. 22.9% of all households were made up of individuals who were never married. The average family size was 2.99.
In the CDP, the age distribution of the population shows 25.5% under the age of 20, 18.5% from 20 to 44, 28.6% from 45 to 64, and 27.3% who were 65 years of age or older. The median age was 49.1 years.
The median income for a household in the CDP was $70,958, the median income for Nonfamily households is $47,753, the median income for families was $94,846 and Married-couple families was $110,485. The per capita income for the CDP was $20,702. About 10% of the population were below the poverty line, including 16.3% of those under age 18 and 4.4% of those age 65 or over.
According to the 2020 Census, 24.1% of the CDP were Veterans of the United States Armed Forces of which 80.3% were male and 19.7% female.
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