Tomball is a city in Harris County in the U.S. state of Texas, a part of the Houston metropolitan area. The population was 10,753 at the 2010 census. In 1907, the community of Peck was renamed Tomball for local congressman Thomas Henry Ball, who had a major role in the development of the Port of Houston.

The median income for a household in the city was $37,787, and the median income for a family was $45,764. Males had a median income of $38,059 versus $26,799 for females. The per capita income for the city was $20,331. About 4.5% of families and 7.3% of the population were below the poverty line, including 6.3% of those under age 18 and 17.6% of those age 65 or over.