Clark County is located in the U.S. state of Nevada. As of the 2010 census, the population was 1,951,269, with an estimated population of 2,231,647 in 2018. It is by far the most populous county in Nevada, accounting for nearly three-quarters of the state’s residents – thus making Nevada one of the most centralized states in the United States.
The Colorado River forms the county’s southeastern boundary, with Hoover Dam forming Lake Mead along much of its length. The lowest point in the state of Nevada is on the Colorado River just south of Laughlin in Clark County, where it flows out of Nevada into California and Arizona. Greater Las Vegas is a tectonic valley, surrounded by four mountain ranges, with nearby Mount Charleston being the highest elevation at 11,918 ft (3,633 m), located to the northwest. Other than the forests on Mount Charleston, the geography in Clark County is a desert. Creosote bushes are the main native vegetation, and the mountains are mostly rocky with little vegetation. The terrain slopes to the south and east. The county has an area of 8,061 square miles (20,880 km), of which 7,891 square miles (20,440 km) is land and 169 square miles (440 km) (2.1%) is water.
In 2000 there were 512,253 households out of which 31.70% had children under the age of 18 living with them, 48.70% were married couples living together, 11.80% had a female householder with no husband present, and 33.70% were non-families. 24.50% of all households were made up of individuals and 6.70% had someone living alone who was above age 64. The average household size was 2.65 and the average family size was 3.17.
The county population contained 25.60% under the age of 18, 9.20% from 18 to 24, 32.20% from 25 to 44, 22.30% from 45 to 64, and 10.70% who were over age 64. The median age was 34 years. For every 100 females there were 103.50 males. For every 100 females age 18 and over, there were 102.80 males.
The median income for a household in the county was $53,536, and the median income for a family was $59,485. Males had a median income of $35,243 versus $27,077 for females. The per capita income for the county was $21,785. About 7.90% of families and 10.80% of the population were below the poverty line, including 14.10% of those under age 18 and 7.30% of those over age 64.
Large numbers of new residents in the state originate from California.
As of the 2010 United States Census, there were 1,951,269 people, 715,365 households, and 467,916 families in the county. The population density was 247.3 inhabitants per square mile (95.5/km). There were 840,343 housing units at an average density of 106.5 per square mile (41.1/km). The racial makeup of the county was 60.9% white, 10.5% black or African American, 8.7% Asian, 0.7% Pacific islander, 0.7% American Indian, 13.5% from other races, and 5.1% from two or more races. Those of Hispanic or Latino origin made up 29.1% of the population. In terms of ancestry, 11.7% were German, 9.1% were Irish, 7.6% were English, 6.3% were Italian, and 2.7% were American.
Of the 715,365 households, 34.9% had children under the age of 18 living with them, 45.0% were married couples living together, 13.5% had a female householder with no husband present, 34.6% were non-families, and 25.3% of all households were made up of individuals. The average household size was 2.70 and the average family size was 3.26. The median age was 35.5 years.
The median income for a household in the county was $56,258 and the median income for a family was $63,888. Males had a median income of $43,693 versus $35,324 for females. The per capita income for the county was $27,422. About 8.7% of families and 11.7% of the population were below the poverty line, including 16.9% of those under age 18 and 7.6% of those age 65 or over.