311 complaint categories
311 service requests grouped into 15 normalized categories, compared across US and Canadian cities.
Abandoned Vehicles
Reports of vehicles left unattended for extended periods on public streets or in other public spaces, including derelict cars and vehicle abatement complaints. This page shows aggregate complaint counts and trends across cities. To report an abandoned vehicle, use your city's official 311 service directly—response times and whether the vehicle is ultimately towed vary significantly by city, as the data here illustrates.
15 cities
Animals & Pests
Complaints about loose, injured, or dead animals on public property; dog bites; wildlife concerns (coyotes, raccoons); and rodent or pest sightings.
25 cities
Building & Housing Maintenance
Complaints about the physical condition of buildings and housing — blight, code violations, failing plumbing and heat, unsanitary conditions, and property maintenance concerns on both residential and commercial properties.
27 cities
Graffiti
Requests to remove graffiti from public or private property.
18 cities
Homeless Encampments
Reports of tents, improvised shelters, or other encampments on public property.
11 cities
Illegal Dumping
Reports of bulk items, construction debris, or other materials dumped illegally on public property or in unauthorized locations.
21 cities
Noise
Noise complaints of all kinds: residential parties, commercial venues, construction, traffic, aircraft, and barking dogs.
12 cities
Parking
Enforcement complaints about illegally parked vehicles, blocked driveways, parking meter issues, and parking-sign maintenance. Distinct from `abandoned_vehicles`, which is about long-term neglect rather than enforcement.
22 cities
Potholes & Roads
Potholes, failing pavement, road resurfacing requests, traffic-control issues, and (in winter cities) snow and ice control for roadways.
31 cities
Sidewalks
Sidewalk repair and obstruction complaints, curb damage, and sidewalk snow-and-ice clearance concerns.
22 cities
Street Cleaning
Street sweeping, debris removal from public right-of-way, and litter in public spaces.
23 cities
Street Lights & Signals
Broken street lights, outages, damaged signs, and malfunctioning traffic signals or pedestrian crossings.
28 cities
Trash & Recycling
Missed garbage pickups, recycling and composting issues, bulk-item collection, cart maintenance, and household hazardous waste.
28 cities
Trees & Parks
Tree trimming and removal, downed limbs, park maintenance, and urban forestry concerns.
24 cities
Water, Sewer & Drainage
Water main breaks and leaks, sewer backups, storm drain clogs, catch basin concerns, and flooding.
22 cities
How categories are defined
Each city publishes its own service type labels. The categories above normalize those labels into a consistent cross-city taxonomy — for example, NYC’s Noise - Residentialand Calgary’s Bylaw - Noise Concerns both roll up into Noise.
View the full service type mapping tables →