4512 locations in the last 30 days (4667 reports) · Last sighting yesterday
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.
53,552 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 8/27/2025 | 9860 S CALHOUN AVE | South Deering | 7 | Completed | 14 days | Phone Call | City 311 |
| 8/28/2025 | 10113 S HOXIE AVE | South Deering | 7 | Completed | 13 days | Phone Call | City 311 |
| 10/14/2025 | 9110 S SAGINAW AVE | Calumet Heights | 7 | Completed | 7 days | Phone Call | City 311 |
| 9/2/2025 | 2432 E 73RD ST | South Shore | 7 | Completed | 9 days | Phone Call | City 311 |
| 2/16/2026 | 3008 E 78TH ST | South Shore | 7 | Completed | 1 day | Phone Call | City 311 |
| 8/7/2025 | 7845 S KINGSTON AVE | South Shore | 7 | Completed | 6 days | Phone Call | City 311 |
| 10/23/2025 | 7519 S YATES BLVD | South Shore | 7 | Completed | 4 days | Phone Call | City 311 |
| 8/9/2025 | 7845 S KINGSTON AVE | South Shore | 7 | Completed | 4 days | Mobile Device | City 311 |
| 5/12/2026 | 7523 S YATES BLVD | South Shore | 7 | Completed | 2 days | Phone Call | City 311 |
| 10/22/2025 | 7444 S CHAPPEL AVE | South Shore | 7 | Completed | 5 days | Phone Call | City 311 |
| 10/13/2025 | 9953 S YATES AVE | South Deering | 7 | Completed | 8 days | Phone Call | City 311 |
| 10/24/2025 | 9357 S MARQUETTE AVE | Calumet Heights | 7 | Completed | 3 days | Phone Call | City 311 |
| 10/16/2025 | 9019 S KINGSTON AVE | Calumet Heights | 7 | Completed | 5 days | Phone Call | City 311 |
| 10/6/2025 | 2411 E 93RD ST | Calumet Heights | 7 | Completed | 4 days | Phone Call | City 311 |
| 4/6/2026 | 8336 S MANISTEE AVE | South Chicago | 7 | Completed | 1 day | Internet | City 311 |
| 9/20/2026 | 8831 S COLFAX AVE | South Chicago | 7 | Completed | 4 days | Mobile Device | City 311 |
| 10/16/2025 | 9022 S KINGSTON AVE | Calumet Heights | 7 | Completed | 5 days | Phone Call | City 311 |
| 10/22/2025 | 8324 S ESSEX AVE | South Chicago | 7 | Completed | 5 days | Phone Call | City 311 |
| 8/24/2026 | 8520 S MANISTEE AVE | South Chicago | 7 | Completed | 8 days | Phone Call | City 311 |
| 2/9/2026 | 9934 S BENSLEY AVE | South Deering | 7 | Completed | 1 day | Phone Call | City 311 |
| 8/26/2025 | 7523 S YATES BLVD | South Shore | 7 | Completed | 7 days | Internet | City 311 |
| 8/23/2025 | 7336 S YATES BLVD | South Shore | 7 | Completed | 10 days | Phone Call | City 311 |
| 9/6/2025 | 2424 E 103RD ST | South Deering | 7 | Completed | 10 days | Phone Call | City 311 |
| 9/17/2025 | 2101 E 99TH ST | South Deering | 7 | Completed | 12 days | Phone Call | City 311 |
| 5/13/2026 | 8537 S MARQUETTE AVE | South Chicago | 7 | Completed | 1 day | Phone Call | City 311 |