Notes: -- from Wikipedia (Dec 2013):
• "As of the 2010 census, the city had a total population of 29,070."
• "The city's major employer is General Motors which has a full size van assembly plant located there."
• "Wentzville was founded in 1855 as a depot on the Northern Missouri Railroad. It was named after Erasmus Livingston Wentz, a railroad engineer for the line. The land was obtained from William M. Allen, who laid out the town. Wentzville was not incorporated until 1872."
• OpenStreetMap