The album produced three Top 20 singles: The RIAA certified "Red High Heels", "I Wonder", and "Things That Never Cross a Man's Mind" Gold. "Didn't You Know How Much I Loved You" was re-recorded for Kellie's self-titled second album, and released on August 30, 2009, as that albums' third single and a Top 20 hit for Pickler.
Small Town Girl debuted inside the U.S. Billboard 200 top 10 at number nine. The album debuted at number one on the Billboard Top Country Albums chart, selling about 79,000 copies in its first week, the album has since sold over 884,000 copies as of May 2010. Pickler is the second American Idol alumnus to have a number-one album on the U.S. Country Album chart, the first being Idol winner Carrie Underwood.