chi311 shows how long the City of Chicago takes to close 311 service requests, by neighborhood. The city publishes every request; this site just asks the data one question the official tools don't: does the wait depend on where you live?
It is independent, unaffiliated with the City of Chicago, free, and stateless — no accounts, no cookies, no analytics, no data collected about you. Everything is recomputed nightly from the public dataset.
To report a problem to the city, use the real 311 — this site is for asking how the city did afterward.
Built by one person with a domain name and a grudge against unqueryable public data.