Green Ridge is a city located along Route 127 in Pettis County, Missouri, United States. The population was 476 at the 2010 census.
Green Ridge had its start when the railroad was extended to that point. The town site was platted in 1870.
Green Ridge is located at 38°37′13″N 93°24′36″W (38.620203, −93.410006).
According to the United States Census Bureau, the city has a total area of 0.44 square miles (1.14 km2), of which 0.43 square miles (1.11 km2) is land and 0.01 square miles (0.03 km2) is water.
As of the census of 2010, there were 476 people, 176 households, and 130 families living in the city. The population density was 1,107.0 inhabitants per square mile (427.4/km2). There were 194 housing units at an average density of 451.2 per square mile (174.2/km2). The racial makeup of the city was 95.4% White, 0.2% African American, 1.9% from other races, and 2.5% from two or more races. Hispanic or Latino of any race were 2.7% of the population.
There were 176 households, of which 36.4% had children under the age of 18 living with them, 55.7% were married couples living together, 14.2% had a female householder with no husband present, 4.0% had a male householder with no wife present, and 26.1% were non-families. 19.3% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older.