Phelps County Flag

Phelps County

State:
Missouri
County Seat:
Rolla

Phelps County's 2026 population is estimated at 45,288, reflecting a 0.09% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Phelps County is the 24th largest county in Missouri. The 2010 population was 45,298 and has grown -0.02% since 2010.

45,288
Total Population
67
Population Density (mi²)
24
Population Rank (State)
41 0.09%
Annual Population Growth

Phelps County Population

Demographics

Economics and Income Statistics