Phelps County Flag

Phelps County

State:
Missouri
County Seat:
Rolla

Phelps County's estimated 2026 population is 45,288 with a growth rate of 0.09% in the past year according to the most recent United States census data. Phelps County is the 24th largest county in Missouri. The 2010 population was 45,298 and has seen a growth of -0.02% since that time.

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