Adam Klein was born in Oberndorf, Germany on July 23, 1826. In 1848 he set sail for America with his young bride, Friedericke Klenk. The couple landed at New Orleans in January 1851and later settled in northwest Harris County, where they bought 640 acres for 33 1/2 cents an acre. Besides farming, the family operated a cotton gin and grist mill. As settlements grew in the area, Adam Klein thought a post office was needed. When he wrote to Washington and asked that a post office be established in the area, the government consented and named the post office after Adam Klein. It was in this way the community acquired its name.

Klein Intermediate opened on Aug. 27, 1984 in honor of the Klein Family.