Murfreesboro is a city in and the county seat of Rutherford County, Tennessee. The population was 108,755 according to the 2010 census, up from 68,816 residents certified in 2000. In 2014, census estimates showed a population of 120,954. The city is the center of population of Tennessee and is part of the Nashville metropolitan area, which includes thirteen counties and a population of 1,757,912 (2013). It is Tennessee's fastest growing major city and one of the fastest growing cities in the country. Murfreesboro is also home to Middle Tennessee State University, the largest undergraduate university in the state of Tennessee, with an undergraduate population of 22,299 and 25,188 total students .