An economic valuation of the importance of trees in an urban environment. Using how amenities affect the change of the size of a population in a city, the amenity of trees will be observed. The focus is on how the amenity of green space specifically influences the percentage change of the population in these cities. The number of trees and the health of an urban canopy makes a positive impact on the livability of a city and is an important amenity when considering the value of property within a city. While the focus is on trees this thesis also looks into other economic variables that could be affecting the change in population to make the regression more holistic. The findings from the regressions show that the healthiness of a city’s urban forest can influence the change in the population of that city. Tree’s improve the overall “livability” of a city.