4709 locations in the last 30 days (4872 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.
54,128 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 8/15/2025 | 3218 W 64TH ST | Chicago Lawn | 14 | Completed | 7 days | Mobile Device | City 311 |
| 8/15/2025 | 1510 N ELSTON AVE | West Town | 27 | Completed | 12 days | Mobile Device | City 311 |
| 8/15/2025 | 3056 N RACINE AVE | Lake View | 32 | Completed | 6 days | Phone Call | City 311 |
| 8/15/2025 | 1916 S THROOP ST | Lower West Side | 25 | Completed | 12 days | Mobile Device | City 311 |
| 8/15/2025 | 3437 N NEVA AVE | Dunning | 38 | Completed | 7 days | Phone Call | City 311 |
| 8/15/2025 | 7654 S CREGIER AVE | South Shore | 8 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 9039 S DOBSON AVE | Burnside | 8 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 3741 S WASHTENAW AVE | Brighton Park | 12 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 1130 W WILSON AVE | Uptown | 46 | Completed | 11 days | Internet | City 311 |
| 8/15/2025 | 10336 S CLAREMONT AVE | Beverly | 19 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 3608 W WOLFRAM ST | Avondale | 35 | Completed | 10 days | Internet | City 311 |
| 8/15/2025 | 10238 S FAIRFIELD AVE | Beverly | 19 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 10907 S HARDING AVE | Mount Greenwood | 19 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 5204 W NEWPORT AVE | Portage Park | 31 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 2855 N LINDER AVE | Belmont Cragin | 31 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 4936 N WINCHESTER AVE | Lincoln Square | 47 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 3624 N MARSHFIELD AVE | Lake View | 47 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 1757 W ROSCOE ST | Lake View | 32 | Completed | 10 days | Internet | City 311 |
| 8/15/2025 | 2315 N MAPLEWOOD AVE | Logan Square | 1 | Completed | 10 days | Mobile Device | City 311 |
| 8/15/2025 | 4332 W LEXINGTON ST | West Garfield Park | 24 | Completed | 11 days | Phone Call | City 311 |
| 8/15/2025 | 4951 W ROSCOE ST | Portage Park | 31 | Completed | 12 days | Internet | City 311 |
| 8/15/2025 | 907 N HERMITAGE AVE | West Town | 1 | Completed | 10 days | Mobile Device | City 311 |
| 8/15/2025 | 6146 S WHIPPLE ST | Chicago Lawn | 15 | Completed | 3 days | Phone Call | City 311 |
| 8/15/2025 | 2708 W ARMITAGE AVE | Logan Square | 1 | Completed | 7 days | Internet | City 311 |
| 8/15/2025 | 5946 N EAST CIRCLE AVE | Norwood Park | 41 | Completed | 3 days | Internet | City 311 |