This map shows the sum of all 311 calls recorded for each zipcode from 2010 to the present. If no zipcode information is given, the 311 report is not included. Color indicates the density of 311 reports - the number of reports per 1000 people. Red indicates the highest density, clear indicates the lowest. Grey indicates no data.
No attempt has been made to account for duplicate reports, or to normalise for a single individual making many complaints.