Moapa Valley is an unincorporated town in Clark County, Nevada, United States. As of the 2010 census, it had a population of 6,924. The valley in which the community lies, also named Moapa Valley, is about 40 miles (64 km) long and lies roughly northwest to southeast.
The Muddy River, formerly called the Moapa River, originates from the Warm Springs Natural Area and flows through the valley before emptying into Lake Mead. The communities of Moapa Town, Logandale and Overton are located in the valley. Logandale is about 12 miles (19 km) southeast of Moapa Town, and Overton is about 5 miles (8.0 km) southeast of Logandale. Prior to the creation of Lake Mead, Moapa Valley also included the town of St. Thomas, which was abandoned in 1938 due to the rising lake level.
Moapa Valley is at an elevation of 1,265 ft (386 m) above sea level. The United States Census Bureau gives the census-designated place (CDP) of Moapa Valley (which may not coincide exactly with the town boundaries) a total area of 43.7 square miles (113.2 km), of which 43.7 square miles (113.1 km) is land and 0.04 square miles (0.1 km), or 0.05%, is water.
As of the census of 2000, there were 5,784 people, 1,934 households, and 1,525 families residing in the CDP. The population density was 132.7 people per square mile (51.3/km²). There were 2,213 housing units at an average density of 50.8 per square mile (19.6/km²). The racial makeup of the CDP was 92.41% White, 0.24% African American, 0.66% Native American, 0.26% Asian, 0.36% Pacific Islander, 4.34% from other races, and 1.73% from two or more races. Hispanic or Latino of any race were 9.09% of the population.
There were 1,934 households out of which 38.8% had children under the age of 18 living with them, 69.8% were married couples living together, 6.5% had a female householder with no husband present, and 21.1% were non-families. 17.8% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older. The average household size was 2.99 and the average family size was 3.43.
In the CDP, the population was spread out with 33.5% under the age of 18, 6.7% from 18 to 24, 23.0% from 25 to 44, 21.6% from 45 to 64, and 15.2% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 101.7 males. For every 100 females age 18 and over, there were 98.2 males.
The median income for a household in the CDP was $39,942, and the median income for a family was $47,575. Males had a median income of $42,348 versus $26,442 for females. The per capita income for the CDP was $16,696. About 5.7% of families and 6.9% of the population were below the poverty line, including 7.3% of those under age 18 and 8.3% of those age 65 or over.