Assessor: Bill Stoltz 200 North Main Street, Suite 126 Rolla, Missouri 65401 Phone: (573) 458-6135 Fax: (573) 458-6149 Website
QUICK FACTS: - Phelps County is a county located in the central portion of the U.S. state of Missouri. As of the 2010 census, the population was 45,156. The largest city and county seat is Rolla.
