Webb County is a county located in the U.S. state of Texas. As of the 2010 census, the population was 250,304. Its county seat is Laredo. The county was named after James Webb, who served as Secretary of the Treasury, Secretary of State, and Attorney General of the Republic of Texas, and later judge of the United States District Court following the admission of Texas to statehood. By area, Webb County is the largest county in South Texas and the sixth-largest in the state. Webb County includes the Laredo metropolitan area.
According to the U.S. Census Bureau, the county has a total area of 3,376 square miles (8,740 km), of which 3,361 square miles (8,700 km) are land and 14 square miles (36 km) (0.4%) are covered by covered by water.
As of the 2015 Texas Population Estimate Program, the population of the county was 273,536. The racial makeup of the county was 99.8% White and 0.2% Black or African American. The ethnic makeup of the county was non-Hispanic whites 8,699 (3.2%), Black Americans 552 (0.2%), and other non-Hispanic 2,134 (0.8%). Hispanics and Latinos (of any race) 262,151 (95.8%).
As of the census of 2000, 193,117 people, 50,740 households, and 43,433 families resided in the county. The county gained 57,000 additional residents between 2000 and 2010. The population density was 58 people per square mile (22/km²). The 55,206 housing units averaged 16 per square mile (6/km²). The racial makeup of the county was 82.16% White, 0.37% Black or African American, 0.47% Native American, 0.43% Asian, 0.02% Pacific Islander, 14.00% from other races, and 2.54% from two or more races. About 94% of the population was Hispanic or Latino of any race.
Of the 50,740 households, 53.20% had children under the age of 18 living with them, 62.60% were married couples living together, 18.30% had a female householder with no husband present, and 14.40% were not families; 12.40% of all households were made up of individuals and 5.10% had someone living alone who was 65 years of age or older. The average household size was 3.75 and the average family size was 4.10.
In the county, the population was distributed as 36.20% under the age of 18, 11.40% from 18 to 24, 29.30% from 25 to 44, 15.60% from 45 to 64, and 7.60% who were 65 years of age or older. The median age was 26 years. For every 100 females, there were 92.90 males. For every 100 females age 18 and over, there were 87.90 males.
The median income for a household in the county was $28,100, and for a family was $29,394. Males had a median income of $23,618 versus $19,018 for females. The per capita income for the county was $10,759. About 26.70% of families and 31.20% of the population were below the poverty line, including 39.40% of those under age 18 and 26.90% of those age 65 or over.