4502 locations in the last 30 days (4668 reports) · Last sighting 20 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 |
|---|---|---|---|---|---|---|---|
| 7/31/2025 | 2339 W MORSE AVE | West Ridge | 40 | Completed | 7 days | Internet | City 311 |
| 7/31/2025 | 6915 N WESTERN AVE | West Ridge | 40 | Completed | 7 days | Internet | City 311 |
| 7/31/2025 | 4214 W MELROSE ST | Irving Park | 30 | Completed | 12 days | Alderman's Office | City 311 |
| 7/31/2025 | 5821 S WABASH AVE | Washington Park | 20 | Completed | 8 days | Phone Call | City 311 |
| 7/31/2025 | 6115 N SPRINGFIELD AVE | North Park | 39 | Completed | 18 days | Phone Call | City 311 |
| 7/31/2025 | 6015 S ARCHER AVE | Garfield Ridge | 23 | Completed | 11 days | Alderman's Office | City 311 |
| 7/31/2025 | 8253 S KIMBARK AVE | Avalon Park | 8 | Completed | 5 days | Mobile Device | City 311 |
| 7/31/2025 | 5544 W PENSACOLA AVE | Portage Park | 45 | Completed | 6 days | Phone Call | City 311 |
| 7/31/2025 | 3317 N PACIFIC AVE | Dunning | 38 | Completed | 12 days | Internet | City 311 |
| 7/31/2025 | 2249 W 18TH PL | Lower West Side | 25 | Completed | 7 days | Alderman's Office | City 311 |
| 7/31/2025 | 4742 N LAVERGNE AVE | Portage Park | 45 | Completed | 6 days | Internet | City 311 |
| 7/31/2025 | 376 E 89TH PL | Chatham | 6 | Completed | 6 days | Internet | City 311 |
| 7/31/2025 | 2300 N JANSSEN AVE | Lincoln Park | 2 | Completed | 11 days | Alderman's Office | City 311 |
| 7/31/2025 | 1255 W DICKENS AVE | Lincoln Park | 2 | Completed | 11 days | Alderman's Office | City 311 |
| 7/31/2025 | 2101 N LAKEWOOD AVE | Lincoln Park | 2 | Completed | 11 days | Alderman's Office | City 311 |
| 7/31/2025 | 5005 W FOSTER AVE | Forest Glen | 45 | Completed | 6 days | Phone Call | City 311 |
| 7/31/2025 | 4411 N WINCHESTER AVE | Lincoln Square | 47 | Completed | 13 days | Mobile Device | City 311 |
| 7/31/2025 | 5605 S KEELER AVE | West Elsdon | 13 | Completed | 4 days | Alderman's Office | City 311 |
| 7/31/2025 | 1419 W 73RD ST | West Englewood | 17 | Completed | 11 days | Mobile Device | City 311 |
| 7/31/2025 | 1232 W 96TH ST | Washington Heights | 21 | Completed | 12 days | Phone Call | City 311 |
| 7/31/2025 | 3340 S ARCHER AVE | McKinley Park | 12 | Completed | 12 days | Phone Call | City 311 |
| 7/31/2025 | 1626 S ST LOUIS AVE | North Lawndale | 24 | Completed | 8 days | Phone Call | City 311 |
| 7/31/2025 | 4333 N MONITOR AVE | Portage Park | 38 | Completed | 12 days | Internet | City 311 |
| 7/31/2025 | 8519 S BUFFALO AVE | South Chicago | 10 | Completed | 4 days | Internet | City 311 |
| 7/31/2025 | 10620 S CAMPBELL AVE | Beverly | 19 | Completed | 13 days | Mobile Device | City 311 |