4578 locations in the last 30 days (4747 reports) · Last sighting 13 hours ago
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.
52,821 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 7/25/2025 | 4845 W ADAMS ST | Austin | 28 | Completed | 10 days | Alderman's Office | City 311 |
| 7/25/2025 | 2209 N SEMINARY AVE | Lincoln Park | 43 | Completed | 10 days | Internet | City 311 |
| 7/25/2025 | 4621 S CALIFORNIA AVE | Brighton Park | 12 | Completed | 11 days | Alderman's Office | City 311 |
| 7/25/2025 | 5443 W PENSACOLA AVE | Portage Park | 45 | Completed | 7 days | Mobile Device | City 311 |
| 7/25/2025 | 2767 W WILSON AVE | Albany Park | 40 | Completed | 7 days | Internet | City 311 |
| 7/25/2025 | 4307 N WESTERN AVE | North Center | 47 | Completed | 7 days | Mobile Device | City 311 |
| 7/25/2025 | 9117 S BUFFALO AVE | South Chicago | 10 | Completed | 10 days | Walk-in | City 311 |
| 7/25/2025 | 4149 N SHERIDAN RD | Uptown | 46 | Completed | 7 days | Internet | City 311 |
| 7/25/2025 | 11430 S ST LAWRENCE AVE | Pullman | 9 | Completed | 11 days | Internet | City 311 |
| 7/25/2025 | 1724 N OAK PARK AVE | Austin | 29 | Completed | 11 days | Phone Call | City 311 |
| 7/25/2025 | 1525 N LATROBE AVE | Austin | 37 | Completed | 11 days | Phone Call | City 311 |
| 7/25/2025 | 1819 N HUMBOLDT BLVD | Logan Square | 26 | Completed | 11 days | Phone Call | City 311 |
| 7/25/2025 | 3901 N SACRAMENTO AVE | Irving Park | 33 | Completed | 13 days | Internet | City 311 |
| 7/25/2025 | 845 W NEWPORT AVE | Lake View | 44 | Completed | 11 days | Mobile Device | City 311 |
| 7/25/2025 | 3050 W CERMAK RD | South Lawndale | 24 | Completed | 11 days | Phone Call | City 311 |
| 7/25/2025 | 8621 S BALTIMORE AVE | South Chicago | 10 | Completed | 10 days | Mobile Device | City 311 |
| 7/25/2025 | 10639 S AVENUE G | East Side | 10 | Completed | 10 days | Phone Call | City 311 |
| 7/25/2025 | 918 N LARAMIE AVE | Austin | 37 | Completed | 7 days | Phone Call | City 311 |
| 7/25/2025 | 1721 W 21ST ST | Lower West Side | 25 | Completed | 7 days | Mobile Device | City 311 |
| 7/25/2025 | 3407 W MADISON ST | East Garfield Park | 28 | Completed | 7 days | Internet | City 311 |
| 7/25/2025 | 902 E 83RD ST | Chatham | 8 | Completed | 11 days | Internet | City 311 |
| 7/25/2025 | 5313 S RUTHERFORD AVE | Garfield Ridge | 23 | Completed | 10 days | Mobile Device | City 311 |
| 7/25/2025 | 5731 W NEWPORT AVE | Portage Park | 30 | Completed | 7 days | Mobile Device | City 311 |
| 7/25/2025 | 1649 S HOMAN AVE | North Lawndale | 24 | Completed | 11 days | Mobile Device | City 311 |
| 7/25/2025 | 1635 S HOMAN AVE | North Lawndale | 24 | Completed | 11 days | Mobile Device | City 311 |