Millbrook is a city in Autauga and Elmore counties in the State of Alabama. The population was 14,640 at the 2010 census. It is part of the Montgomery Metropolitan Statistical Area.GeographyMillbrook is located at .According to the United States Census Bureau, the city has a total area of 13.1sqmi, of which 12.8sqmi is land and 0.3sqmi is water.HistoryMillbrook includes the former village of Robinson Springs within its boundaries. Numerous eras delineate Millbrook’s past.The area's first permanent home "Ellerslie" was completed in 1818 by Georgia Congressman, and Revolutionary War Veteran Bolling Hall. The area's second permanent home "Thornfield" was started the following year, and completed in 1820 by pioneer Archibald McKeithen. Both homes still stand, and are private residences.After its initial settlement, Robinson Springs was known as an early summer resort for wealthy families of Montgomery, and the vicinity. The Robinson Springs United Methodist Church was formed in 1828. The settlers quickly grew out of the log structure, and decided to build a permanent structure. The present church was completed in 1848. The parsonage was sold soon after completion (due to the lack of a steady minister) to noted Alabama historian Albert J. Pickett. It still stands two doors down from the church. In 1852, Robinson Springs played host to Alabama's first state fair.