Cool Valley, Missouri

Cool Valley population, 2020 to 2024

Cool Valley lost 27 residents from July 2020 to July 2024, a change of -2.6%. In the latest year it moved by -1.

Cool Valley covers 0.46 square miles of land, for 2,193 people per square mile of land. The median Missouri place of 5,000+ has 1,448, so Cool Valley is denser than the typical town.

What county Cool Valley is in

All of Cool Valley's residents live in St. Louis County, which had 992,929 residents in 2024. Cool Valley holds 0.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Cool Valley

1 ZIP Code Tabulation Area (ZCTA) overlaps Cool Valley by at least 10% of the ZCTA's or the city's land: 63121. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Cool Valley is

The Census internal point of Cool Valley is at 38.725000, -90.305800. Jefferson City, the capital, is 101.3 miles W in a straight line. The nearest larger place is Normandy, MO (4,247 people), 1.2 miles away. The nearest city of 100,000 or more is St. Louis, MO, 7.0 miles away.

Daylight in Cool Valley

At 38.73° N, Cool Valley gets about 14 h 53 min of daylight around the June solstice and 9 h 27 min around the December solstice, a swing of 5 h 25 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Cool Valley

The eight nearest incorporated places of 1,000+ in Missouri, measured between internal points. The closest is Normandy, 1.3 miles away, with 4,247 people.