Westwood is a village in west St. Louis County, Missouri, United States.

According to the United States Census Bureau, the village has a total area of 0.61 square miles (1.58 km2), all land.

There were 125 housing units at an average density of 204.9 per square mile (79.1/km2).

There were 128 housing units at an average density of 204.5 per square mile (79.0/km2).

The racial makeup of the village was 95.77% White, 3.17% African American and 1.06% Asian.

None of the families and 0.7% of the population were living below the poverty line, including no one under 18 and 2.1% of those over 64.