[3] It is named for Isaac Parker, a state legislator who introduced the bill that established the county in 1855.

[5] Parker County is included in the Dallas-Fort Worth-Arlington metropolitan statistical area.

[12] Among the 2020 census population, the racial and ethnic makeup was 79.44% non-Hispanic white, 13.37% Hispanic or Latino of any race, 4.44% multiracial, 1.10% Black or African American, 0.67% Asian alone, 0.59% American Indian and Alaska Native, 0.32% some other race, and 0.07% Pacific Islander.

American Community Survey 2023 Data The United States Census Bureau estimated that in 2023, Parker County’s population was 173,494.

Republicans have held all public offices since 1999 and the county has not voted for a Democratic presidential candidate since 1976.