4439 locations in the last 30 days (4617 reports) · Last sighting yesterday
What am I looking at?
Each circle is a Chicago neighborhood. The number is its report count — click one to zoom in and see individual sightings there.
Colors are relative to what’s currently on screen, so they adjust as you switch time ranges.
Zoomed into a neighborhood or zip? Same colors group nearby reports, and a bright dot means that exact spot’s been reported more than once.
Chicago has topped national rankings of the rattiest U.S. cities for over a decade running — a reputation the city itself takes seriously enough to run one of the country’s most active 311 rodent-complaint programs. Every baiting request, burrow report, and complaint filed with the city becomes a public record. RatCity turns that record, plus reports from people who live here, into a map you can actually use: is this block bad? Is it getting worse? Which neighborhood is winning (or losing) the fight this month?
Most of the data is Chicago’s own — every “Rodent Baiting/Rat Complaint” filed through 311, pulled in automatically once a day so the map never goes stale. Layered on top are sightings reported directly by visitors, matched to the same neighborhood and zip-code boundaries the city uses, so a resident’s report and an official 311 complaint carry equal weight on the map.
Circles are sized and colored by how many reports a neighborhood has racked up — blue is quiet, red means trouble. The Day / Week / 30 Days / Year toggle up top changes the window, so you can see whether a neighborhood’s rat problem is a one-week blip or a year-long trend. Whoever’s in the lead gets crowned the neighborhood Rat King in the sidebar, a title that changes hands as new reports come in.
Noticed a rat that isn’t on the map yet? Use “Report a sighting” above — it takes under a minute and goes live as soon as it’s reviewed. Curious about where the data actually comes from or how reports are moderated? See the About page for the full breakdown.
Want more? The blog has weekly trend recaps and guides on Chicago’s rat problem and how to keep it out of your home.
58,010 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 5/15/2026 | 1911 N MOHAWK ST | Lincoln Park | 43 | Completed | 3 days | Phone Call | City 311 |
| 5/15/2026 | 2014 N SHEFFIELD AVE | Lincoln Park | 43 | Completed | 3 days | Phone Call | City 311 |
| 8/17/2025 | 924 W VAN BUREN ST | Near West Side | 34 | Completed | 3 days | Internet | City 311 |
| 10/13/2025 | 3025 N NORMANDY AVE | Montclare | 36 | Completed | 3 days | Internet | City 311 |
| 12/12/2025 | 4940 N MOZART ST | Lincoln Square | 40 | Completed | 3 days | Phone Call | City 311 |
| 5/8/2026 | 1946 W ROSCOE ST | North Center | 32 | Completed | 3 days | Phone Call | City 311 |
| 3/13/2026 | 3600 W BELMONT AVE | Irving Park | 30 | Completed | 3 days | Alderman's Office | City 311 |
| 11/14/2025 | 6143 S SEELEY AVE | West Englewood | 16 | Completed | 3 days | Phone Call | City 311 |
| 11/14/2025 | 4344 W MARQUETTE RD | West Lawn | 13 | Completed | 3 days | Phone Call | City 311 |
| 3/28/2026 | 2125 N ALBANY AVE | Logan Square | 1 | Completed | 3 days | Internet | City 311 |
| 10/23/2026 | 5010 N MAJOR AVE | Jefferson Park | 45 | Completed | 3 days | Phone Call | City 311 |
| 12/5/2025 | 2012 W BIRCHWOOD AVE | Rogers Park | 49 | Completed | 3 days | Phone Call | City 311 |
| 11/7/2025 | 1226 S INDEPENDENCE BLVD | North Lawndale | 24 | Completed | 3 days | Phone Call | City 311 |
| 12/26/2025 | 3028 S HAMLIN AVE | South Lawndale | 22 | Completed | 3 days | Phone Call | City 311 |
| 3/17/2026 | 3324 W DOUGLAS BLVD | North Lawndale | 24 | Completed | 3 days | Internet | City 311 |
| 2/6/2026 | 3711 W DOUGLAS BLVD | North Lawndale | 24 | Completed | 3 days | Phone Call | City 311 |
| 11/14/2025 | 2457 S KEDZIE AVE | South Lawndale | 25 | Completed | 3 days | Phone Call | City 311 |
| 6/1/2026 | 4857 N MCVICKER AVE | Jefferson Park | 45 | Completed | 3 days | Alderman's Office | City 311 |
| 5/1/2026 | 7300 S PAXTON AVE | South Shore | 7 | Completed | 3 days | Phone Call | City 311 |
| 5/30/2026 | 6911 S INDIANA AVE | Greater Grand Crossing | 6 | Completed | 3 days | Phone Call | City 311 |
| 11/21/2025 | 5514 S BLACKSTONE AVE | Hyde Park | 5 | Completed | 3 days | Internet | City 311 |
| 5/12/2026 | 4300 N AUSTIN AVE | Portage Park | 38 | Completed | 3 days | Phone Call | City 311 |
| 11/28/2025 | 5153 S HARDING AVE | West Elsdon | 23 | Completed | 3 days | Phone Call | City 311 |
| 4/3/2026 | 5510 N AUSTIN AVE | Jefferson Park | 45 | Completed | 3 days | Mobile Device | City 311 |
| 12/12/2025 | 2307 W ADDISON ST | North Center | 32 | Completed | 3 days | Internet | City 311 |