Unequal access to social, environmental and health amenities in US urban parks

Urban parks provide vital social, environmental and health benefits to residents. However, the spatial distribution of parks, and the amenities they provide, may not be equitably distributed within cities. We examine the accessibility of urban parks with different social, environmental and health amenities by race and ethnicity. We identified 122,988 urban parks across the USA, measured the racial/ethnic population distribution within a 10-min walkshed around each park and compared these distributions to the overall demographics of the city. We found that the spatial distribution of parks as well as park amenities differ according to the neighborhood demographics. Racial/ethnic compositions of neighborhoods surrounding parks tend to be whiter than other parts of the same cities, though there are regional differences. Parks in predominantly white neighborhoods are cooler in the summer and have more tree cover compared with parks in neighborhoods with greater proportions of Hispanic and Black residents. Differences in amenities hold across regions of the country. Our study demonstrates that inequities in access to high-quality parks are widespread across the USA.