4479 locations in the last 30 days (4640 reports) · Last sighting 21 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.
53,164 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 8/5/2025 | 3618 W 70TH ST | West Lawn | 23 | Completed | 13 days | Alderman's Office | City 311 |
| 8/5/2025 | 5342 W BARRY AVE | Belmont Cragin | 30 | Completed | 14 days | Alderman's Office | City 311 |
| 8/5/2025 | 4642 W GLADYS AVE | Austin | 28 | Completed | 8 days | Alderman's Office | City 311 |
| 8/5/2025 | 4240 N LAWNDALE AVE | Irving Park | 33 | Completed | 2 days | Alderman's Office | City 311 |
| 8/5/2025 | 4646 W 79TH ST | Ashburn | 18 | Completed | 8 days | Phone Call | City 311 |
| 8/5/2025 | 5117 W WARWICK AVE | Portage Park | 30 | Completed | 8 days | Alderman's Office | City 311 |
| 8/5/2025 | 4244 N LAWNDALE AVE | Irving Park | 33 | Completed | 10 days | Alderman's Office | City 311 |
| 8/5/2025 | 2845 N MELVINA AVE | Belmont Cragin | 30 | Completed | 14 days | Alderman's Office | City 311 |
| 8/5/2025 | 5134 S SAWYER AVE | Gage Park | 14 | Completed | 9 days | Alderman's Office | City 311 |
| 8/5/2025 | 8019 S LOOMIS ST | Auburn Gresham | 17 | Completed | 8 days | Phone Call | City 311 |
| 8/5/2025 | 5215 W NORTH AVE | Austin | 37 | Completed | 14 days | Phone Call | City 311 |
| 8/5/2025 | 1346 W DIVERSEY AVE | Lake View | 32 | Completed | 13 days | Mobile Device | City 311 |
| 8/5/2025 | 5221 S MAJOR AVE | Garfield Ridge | 23 | Completed | 9 days | Internet | City 311 |
| 8/5/2025 | 4500 N LAPORTE AVE | Portage Park | 45 | Completed | 10 days | Alderman's Office | City 311 |
| 8/5/2025 | 1143 E 91ST ST | Burnside | 8 | Completed | 7 days | Phone Call | City 311 |
| 8/5/2025 | 2144 W MCLEAN AVE | Logan Square | 32 | Completed | 10 days | Alderman's Office | City 311 |
| 8/5/2025 | 1038 N HERMITAGE AVE | West Town | 1 | Completed | 8 days | Phone Call | City 311 |
| 8/5/2025 | 5055 N NEW ENGLAND AVE | Norwood Park | 41 | Completed | 14 days | Phone Call | City 311 |
| 8/5/2025 | 5740 W PENSACOLA AVE | Portage Park | 38 | Completed | 14 days | Phone Call | City 311 |
| 8/5/2025 | 717 W MONTROSE AVE | Uptown | 46 | Completed | 13 days | Phone Call | City 311 |
| 8/5/2025 | 3943 W 64TH PL | West Lawn | 23 | Completed | 13 days | Alderman's Office | City 311 |
| 8/5/2025 | 3920 W 64TH PL | West Lawn | 23 | Completed | 13 days | Alderman's Office | City 311 |
| 8/5/2025 | 6813 S KEELER AVE | West Lawn | 23 | Completed | 13 days | Alderman's Office | City 311 |
| 8/5/2025 | 6524 W 60TH PL | Clearing | 13 | Completed | 10 days | Phone Call | City 311 |
| 8/5/2025 | 1035 W BELDEN AVE | Lincoln Park | 43 | Completed | 10 days | Internet | City 311 |