# Greendale, Missouri

Greendale is a city in St. Louis County, Missouri, United States. The population was 651 at the 2010 census.

## Geography

According to the United States Census Bureau, the city has a total area of 0.21 square miles (0.54 km$^2$), all land.

## Demographics
### 2020 census

Greendale city, Missouri – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race. :
| Race / Ethnicity (NH = Non-Hispanic) | Pop 2000 | Pop 2010 | Pop 2020 | % 2000 | % 2010 | % 2020 |
| White alone (NH) | 227 | 181 | 125 | 31.44% | 27.80% | 19.47% |
| Black or African American alone (NH) | 462 | 440 | 437 | 63.99% | 67.59% | 68.07% |
| Native American or Alaska Native alone (NH) | 1 | 0 | 2 | 0.14% | 0.00% | 0.31% |
| Asian alone (NH) | 0 | 5 | 27 | 0.00% | 0.77% | 4.21% |
| Native Hawaiian or Pacific Islander alone (NH) | 0 | 0 | 0 | 0.00% | 0.00% | 0.00% |
| Other race alone (NH) | 3 | 3 | 3 | 0.42% | 0.46% | 0.47% |
| Mixed race or Multiracial (NH) | 21 | 10 | 25 | 2.91% | 1.54% | 3.89% |
| Hispanic or Latino (any race) | 8 | 12 | 23 | 1.11% | 1.84% | 3.58% |
| Total | 722 | 651 | 642 | 100.00% | 100.00% | 100.00% |

### 2010 census

As of the census of 2010, there were 651 people, 312 households, and 174 families living in the city. The population density was 3,100.0 inhabitants per square mile (1,196.9/km$^2$). There were 329 housing units at an average density of 1,566.7 per square mile (604.9/km$^2$). The racial makeup of the city was 28.0% White, 68.5% African American, 0.8% Asian, 0.9% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 1.8% of the population.
There were 312 households, of which 24.4% had children under the age of 18 living with them, 29.8% were married couples living together, 22.1% had a female householder with no husband present, 3.8% had a male householder with no wife present, and 44.2% were non-families. 40.7% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.09 and the average family size was 2.82.
The median age in the city was 45.9 years. 16% of residents were under the age of 18; 10.2% were between the ages of 18 and 24; 21.7% were from 25 to 44; 37% were from 45 to 64; and 15.1% were 65 years of age or older. The gender makeup of the city was 43.6% male and 56.4% female.

### 2000 census

As of the census of 2000, there were 722 people, 331 households, and 201 families living in the city. The population density was 3,480.3 inhabitants per square mile (1,343.8/km$^2$). There were 343 housing units at an average density of 1,653.4 per square mile (638.4/km$^2$). The racial makeup of the city was 31.86% White, 64.40% African American, 0.14% Native American, 0.69% from other races, and 2.91% from two or more races. Hispanic or Latino of any race were 1.11% of the population.
There were 331 households, out of which 28.1% had children under the age of 18 living with them, 39.0% were married couples living together, 18.1% had a female householder with no husband present, and 39.0% were non-families. 33.8% of all households were made up of individuals, and 8.2% had someone living alone who was 65 years of age or older. The average household size was 2.18 and the average family size was 2.77.
In the city, the population was spread out, with 22.0% under the age of 18, 5.1% from 18 to 24, 30.9% from 25 to 44, 29.1% from 45 to 64, and 12.9% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 76.1 males. For every 100 females age 18 and over, there were 72.7 males.
The median income for a household in the city was $56,083, and the median income for a family was $66,250. Males had a median income of $48,125 versus $29,306 for females. The per capita income for the city was $23,284. About 2.5% of families and 3.4% of the population were below the poverty line, including 2.6% of those under age 18 and none of those age 65 or over.

## Police services

Police services are provided by contract with the neighboring city of Normandy.