In Manhattan, cleanup requests are most frequent in the East Village, Lower East Side, Washington Heights, and Inwood neighborhoods. Using this data, a choropleth map can be generated to show exactly which block groups have the most cleanup requests.
Median income by block group (click to enlarge)Block groups with 20 or more requests have an average median income of $33,370, which is considerably lower than all of Manhattan ($50,437) and Manhattan block groups without any requests ($67,939). The average percentage of population age 25 and over with a Bachelors Degree is considerably lower in areas of higher graffiti cleanup concentration. Only 1- 5% of the population aged 25 and over possesses a Bachelors Degree in 36% of block groups with 20 or more requests. The average percentage for block groups with 20 or more requests is 13%, whereas Manhattan is 25% and areas without a request are 22%:
Percent of population over age 25 with Bachelors Degree (click to enlarge)
Average land value per square foot (click to enlarge)Income, education, and land value are all significantly lower in areas that possess higher numbers of graffiti cleanup requests. What exactly does this mean? Spurious correlation or not, at the very least, the 311 data has uncovered some interesting trends between graffiti and neighborhood typologies. At the very least, this data has shown there are many areas of Manhattan where people enjoy talking to 311 operators. Here are some additional New York City graffiti shots by Untapped photographer Christoffer Delsinger. While these aren’t the typical tagging graffiti, we wanted to showcase some of the amazing, yet ephemeral, street art there is here in the city.
Michael Curley and Charles-Antoine Perrault are graduate students in the Columbia University Graduate School of Architecture, Planning and Preservation (GSAPP).