4571 locations in the last 30 days (4726 reports) · Last sighting 24 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.
53,761 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 8/13/2025 | 1508 N WIELAND ST | Near North Side | 2 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 416 E 45TH PL | Grand Boulevard | 3 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 4320 S MOZART ST | Brighton Park | 12 | Completed | 12 days | Phone Call | City 311 |
| 8/13/2025 | 345 W 42ND PL | Fuller Park | 3 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 1341 S INDIANA AVE | Near South Side | 3 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 2520 N MARMORA AVE | Belmont Cragin | 30 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 3609 N KEDVALE AVE | Irving Park | 30 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 2531 N PARKSIDE AVE | Belmont Cragin | 30 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 57 W ERIE ST | Near North Side | 42 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 1824 W LARCHMONT AVE | North Center | 47 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 1720 W 71ST ST | West Englewood | 17 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 6300 N TROY ST | West Ridge | 50 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 5248 W DRUMMOND PL | Belmont Cragin | 31 | Completed | 8 days | Mobile Device | City 311 |
| 8/13/2025 | 3850 N HERMITAGE AVE | Lake View | 47 | Completed | 1 day | Phone Call | City 311 |
| 8/13/2025 | 4348 N TRIPP AVE | Irving Park | 39 | Completed | 13 days | Internet | City 311 |
| 8/13/2025 | 7040 N SHERIDAN RD | Rogers Park | 49 | Completed | 13 days | Phone Call | City 311 |
| 8/13/2025 | 2853 N SAWYER AVE | Avondale | 35 | Completed | 12 days | Phone Call | City 311 |
| 8/13/2025 | 4537 N ASHLAND AVE | Uptown | 47 | Completed | 8 days | Internet | City 311 |
| 8/13/2025 | 5614 N KENNETH AVE | Forest Glen | 39 | Completed | 7 days | Alderman's Office | City 311 |
| 8/13/2025 | 4325 N KIMBALL AVE | Irving Park | 33 | Completed | 9 days | Internet | City 311 |
| 8/13/2025 | 2209 N SEMINARY AVE | Lincoln Park | 43 | Completed | 12 days | Alderman's Office | City 311 |
| 8/13/2025 | 5700 W SCHOOL ST | Portage Park | 30 | Completed | 8 days | Alderman's Office | City 311 |
| 8/13/2025 | 2505 S CENTRAL PARK AVE | South Lawndale | 22 | Completed | 8 days | Internet | City 311 |
| 8/13/2025 | 3009 W JEROME ST | West Ridge | 50 | Completed | 13 days | Alderman's Office | City 311 |
| 8/13/2025 | 637 W BELMONT AVE | Lake View | 44 | Completed | 9 days | Alderman's Office | City 311 |