Cool Valley Flag

Cool Valley

County Seat:
No
Area (mi²):
0.458
State:
Missouri

Cool Valley is a city located in St. Louis County, Missouri. Cool Valley has a 2026 population of 1,009. Cool Valley is currently declining at a rate of -0.1% annually and its population has decreased by -2.61% since the most recent census, which recorded a population of 1,036 in 2020.

1K
Total Population
2,201
Density (mi²)
-1 -0.1%
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)