Johnston County Flag

Johnston County

County Seat:
Smithfield

Johnston County's estimated 2025 population is 257,230 with a growth rate of 2.98% in the past year according to the most recent United States census data. Johnston County is the 9th largest county in North Carolina. The 2010 population was 169,676 and has seen a growth of 51.6% since that time.

257,230
Total Population
325
Population Density (mi²)
9
Population Rank (State)
7.4K 2.98%
Annual Population Growth

Johnston County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)