McLennan County Flag

McLennan County

State:
Texas
County Seat:
Waco

McLennan County's estimated 2026 population is 273,692 with a growth rate of 0.61% in the past year according to the most recent United States census data. McLennan County is the 21st largest county in Texas. The 2010 population was 235,904 and has seen a growth of 16.02% since that time.

273,692
Total Population
264
Population Density (mi²)
21
Population Rank (State)
1.7K 0.61%
Annual Population Growth

McLennan County Population

Demographics

Economics and Income Statistics