4588 locations in the last 30 days (4757 reports) · Last sighting 12 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 | 4115 W 26TH ST | South Lawndale | 22 | Completed | 7 days | Mobile Device | City 311 |
| 7/25/2025 | 3916 W 84TH PL | Ashburn | 18 | Completed | 10 days | Phone Call | City 311 |
| 7/25/2025 | 972 W CULLERTON ST | Lower West Side | 25 | Completed | 7 days | Internet | City 311 |
| 7/25/2025 | 2815 N RACINE AVE | Lake View | 44 | Completed | 11 days | Phone Call | City 311 |
| 7/25/2025 | 6158 S PARKSIDE AVE | Clearing | 13 | Completed | 10 days | Alderman's Office | City 311 |
| 7/25/2025 | 6200 S PARKSIDE AVE | Clearing | 13 | Completed | 7 days | Alderman's Office | City 311 |
| 7/25/2025 | 3837 N LAKEWOOD | Lake View | 44 | Completed | 13 days | Salesforce Mobile App | City 311 |
| 7/25/2025 | 2828 S KOSTNER AVE | South Lawndale | 22 | Completed | 7 days | Phone Call | City 311 |
| 7/25/2025 | 6137 S PARKSIDE AVE | Clearing | 13 | Completed | 7 days | Phone Call | City 311 |
| 7/25/2025 | 3537 N BELL AVE | North Center | 32 | Completed | 10 days | Mobile Device | City 311 |
| 7/25/2025 | 6800 N ALGONQUIN AVE | Forest Glen | 45 | Completed | 10 days | Phone Call | City 311 |
| 7/25/2025 | 563 N LAWLER AVE | Austin | 37 | Completed | 7 days | Alderman's Office | City 311 |
| 7/25/2025 | 1112 W MONTANA ST | Lincoln Park | 43 | Completed | 10 days | Alderman's Office | City 311 |
| 7/25/2025 | 3639 W 68TH PL | West Lawn | 23 | Completed | 10 days | Phone Call | City 311 |
| 7/25/2025 | 5013 W WABANSIA AVE | Austin | 37 | Completed | 11 days | Phone Call | City 311 |
| 7/25/2025 | 8539 S SAGINAW AVE | South Chicago | 7 | Completed | 11 days | Mobile Device | City 311 |
| 7/25/2025 | 2155 W RANDOLPH ST | Near West Side | 27 | Completed | 7 days | Phone Call | City 311 |
| 7/25/2025 | 3759 N KENMORE AVE | Lake View | 44 | Completed | 11 days | Internet | City 311 |
| 7/25/2025 | 1328 W BYRON ST | Lake View | 46 | Completed | 7 days | Phone Call | City 311 |
| 7/25/2025 | 5427 N LINDER AVE | Jefferson Park | 45 | Completed | 7 days | Mobile Device | City 311 |
| 7/25/2025 | 3512 W MONROE ST | East Garfield Park | 28 | Completed | 7 days | Alderman's Office | City 311 |
| 7/25/2025 | 9026 S HOYNE AVE | Beverly | 19 | Completed | 10 days | Mobile Device | City 311 |
| 7/25/2025 | 5417 S NEVA AVE | Garfield Ridge | 23 | Completed | 10 days | Phone Call | City 311 |
| 7/25/2025 | 1363 W WALTON ST | West Town | 27 | Completed | 11 days | Internet | City 311 |
| 7/25/2025 | 7219 S CAMPBELL AVE | Chicago Lawn | 18 | Completed | 10 days | Phone Call | City 311 |