4607 locations in the last 30 days (4775 reports) · Last sighting 11 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.
52,998 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 7/30/2025 | 1605 W MONTROSE AVE | Lake View | 47 | Completed | 9 days | Alderman's Office | City 311 |
| 7/30/2025 | 410 W MARQUETTE RD | Englewood | 6 | Completed | 7 days | Internet | City 311 |
| 7/30/2025 | 6757 S PARNELL AVE | Englewood | 6 | Completed | 7 days | Internet | City 311 |
| 7/30/2025 | 7011 S PERRY AVE | Greater Grand Crossing | 6 | Completed | 7 days | Internet | City 311 |
| 7/30/2025 | 6816 S PERRY AVE | Greater Grand Crossing | 6 | Completed | 7 days | Internet | City 311 |
| 7/30/2025 | 1521 S HARDING AVE | North Lawndale | 24 | Completed | 6 days | Phone Call | City 311 |
| 7/30/2025 | 7056 S EGGLESTON AVE | Englewood | 6 | Completed | 7 days | Internet | City 311 |
| 7/30/2025 | 211 N GREEN ST | Near West Side | 27 | Completed | 12 days | Internet | City 311 |
| 7/30/2025 | 1751 W ROSCOE ST | Lake View | 32 | Completed | 9 days | Internet | City 311 |
| 7/30/2025 | 5251 S MARSHFIELD AVE | New City | 16 | Completed | 7 days | Phone Call | City 311 |
| 7/30/2025 | 8304 W ADDISON ST | Dunning | 38 | Completed | 14 days | Phone Call | City 311 |
| 7/30/2025 | 5342 W EDDY ST | Portage Park | 30 | Completed | 8 days | Alderman's Office | City 311 |
| 7/30/2025 | 2460 W HUTCHINSON ST | North Center | 47 | Completed | 8 days | Alderman's Office | City 311 |
| 7/30/2025 | 6234 S CHAMPLAIN AVE | Woodlawn | 20 | Completed | 5 days | Phone Call | City 311 |
| 7/30/2025 | 2620 W NORTH AVE | West Town | 26 | Completed | 8 days | Alderman's Office | City 311 |
| 7/30/2025 | 3445 N BELL AVE | North Center | 32 | Completed | 9 days | Internet | City 311 |
| 7/30/2025 | 1968 W FOSTER AVE | Lincoln Square | 40 | Completed | 7 days | Mobile Device | City 311 |
| 7/30/2025 | 1400 S HAMLIN AVE | North Lawndale | 24 | Completed | 7 days | Alderman's Office | City 311 |
| 7/30/2025 | 4500 S ST LAWRENCE AVE | Grand Boulevard | 3 | Completed | 9 days | Phone Call | City 311 |
| 7/30/2025 | 3545 W SHAKESPEARE AVE | Logan Square | 35 | Completed | 8 days | Mobile Device | City 311 |
| 7/30/2025 | 5009 N SAWYER AVE | Albany Park | 33 | Completed | 13 days | Internet | City 311 |
| 7/30/2025 | 737 W 118TH ST | West Pullman | 21 | Completed | 6 days | Phone Call | City 311 |
| 7/30/2025 | 1230 W 72ND PL | West Englewood | 17 | Completed | 9 days | Phone Call | City 311 |
| 7/30/2025 | 104 W 110TH PL | Roseland | 9 | Completed | 6 days | Phone Call | City 311 |
| 7/30/2025 | 1926 S RACINE AVE | Lower West Side | 25 | Completed | 8 days | Mobile Device | City 311 |