Hockley County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 21,537. Its county seat is Levelland. The county was created in 1876, but not organized until 1921. It is named for George Washington Hockley, a secretary of war of the Republic of Texas.

Hockley County comprises the Levelland micropolitan statistical area, which is included in the Lubbock–Levelland combined statistical area.

Hockley County was formed in 1876 from portions of Bexar and Young Counties. It was named for George Washington Hockley, the commander of artillery in the Battle of San Jacinto and later secretary of war of the Republic of Texas.

According to the U.S. Census Bureau, the county has a total area of 909 square miles (2,350 km²), of which 908 square miles (2,350 km²) are land and 0.2 sq mi (0.52 km²) (0.02%) is covered by water.

As of the 2020 census, the county had a population of 21,537, the median age was 37.1 years, 26.0% of residents were under the age of 18, and 16.4% of residents were 65 years of age or older. For every 100 females there were 96.3 males, and for every 100 females age 18 and over there were 93.7 males age 18 and over.

The racial makeup of the county was 63.9% White, 3.0% Black or African American, 1.1% American Indian and Alaska Native, 0.2% Asian, <0.1% Native Hawaiian and Pacific Islander, 14.9% from some other race, and 16.9% from two or more races. Hispanic or Latino residents of any race comprised 49.3% of the population.

58.5% of residents lived in urban areas, while 41.5% lived in rural areas.

There were 7,954 households in the county, of which 35.4% had children under the age of 18 living in them. Of all households, 51.9% were married-couple households, 17.3% were households with a male householder and no spouse or partner present, and 25.5% were households with a female householder and no spouse or partner present. About 24.5% of all households were made up of individuals and 11.1% had someone living alone who was 65 years of age or older.