Weatherby Lake is a city in Platte County, Missouri and is part of the Kansas City metropolitan area within the United States, which borders Kansas City. The population was 1,723 at the 2010 census.
Weatherby Lake is located at 39°14′19″N 94°41′52″W (39.238602, -94.697879).
According to the United States Census Bureau, the city has a total area of 1.34 square miles (3.47 km2), of which 1.03 square miles (2.67 km2) is land and 0.31 square miles (0.80 km2) is water.
As of the census of 2010, there were 1,723 people, 699 households, and 564 families living in the city. The population density was 1,672.8 inhabitants per square mile (645.9/km2). There were 732 housing units at an average density of 710.7 per square mile (274.4/km2). The racial makeup of the city was 95.1% White, 0.8% African American, 0.5% Native American, 1.5% Asian, 0.1% Pacific Islander, 0.7% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 3.2% of the population.
There were 699 households, of which 25.9% had children under the age of 18 living with them, 73.0% were married couples living together, 5.4% had a female householder with no husband present, 2.3% had a male householder with no wife present, and 19.3% were non-families. 16.7% of all households were made up of individuals, and 6.5% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.73.