Green Castle Flag

Green Castle

County:
Sullivan County
County Seat:
No
Area (mi²):
0.447
State:
Missouri

Green Castle is a city located in Sullivan County, Missouri. Green Castle has a 2026 population of 209. Green Castle is currently declining at a rate of -2.34% annually and its population has decreased by -4.57% since the most recent census, which recorded a population of 219 in 2020.

209
Total Population
468
Density (mi²)
-5 -2.34%
Growth

Nearby Cities

Sources

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