Chicago 311 supports the Open311 standard.

Please request an API key if you would like access.

FAQ

• Where is the API documentation?

  The API specs can be found on the Open311 site.

• What URLs should I use for the API calls?

  Example: http://311api.cityofchicago.org/open311/v2/services.json

• Do I need to supply a jurisdiction_id?

  No, but if you do it must be set to cityofchicago.org.

• What formats are supported?

  XML and JSON.

• What media url types do you support?

  We accept urls to jpg, png, or gif photos. In addition, we support urls from twitpic, yfrog, and plixi.

• What are the Terms of Service?

  See http://dev.cityofchicago.org/docs/open311/tos/

For more information contact developers@cityofchicago.org.