Mercer County originated in 1820, was named after Hugh Mercer. Celina forms the county seat and the largest city of the county. With a population of around 40.8K with an excellent admixture of White, Native American, black or African American, Asian, Hispanic or Latino, Pacific Islander, and others along with about 14.7K households and 11K families, it occupies an estimated area of 473.42 sq mi.

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