4508 locations in the last 30 days (4662 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 |
|---|---|---|---|---|---|---|---|
| 8/11/2025 | 919 N DAMEN AVE | West Town | 36 | Completed | 10 days | Mobile Device | City 311 |
| 8/11/2025 | 1310 W CHESTNUT ST | West Town | 27 | Completed | 9 days | Internet | City 311 |
| 8/11/2025 | 4737 W PATTERSON AVE | Portage Park | 30 | Completed | 10 days | Mobile Device | City 311 |
| 8/11/2025 | 7040 S EBERHART AVE | Greater Grand Crossing | 6 | Completed | 2 days | Phone Call | City 311 |
| 8/11/2025 | 4013 N SACRAMENTO AVE | Irving Park | 33 | Completed | 10 days | Internet | City 311 |
| 8/11/2025 | 4152 N MENARD AVE | Portage Park | 38 | Completed | 9 days | Mobile Device | City 311 |
| 8/11/2025 | 3425 W DICKENS AVE | Logan Square | 26 | Completed | 8 days | Mobile Device | City 311 |
| 8/11/2025 | 5607 W IRVING PARK RD | Portage Park | 38 | Completed | 9 days | Phone Call | City 311 |
| 8/11/2025 | 10842 S AVENUE F | East Side | 10 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 1613 W HUBBARD ST | West Town | 27 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 814 N RIDGEWAY AVE | Humboldt Park | 27 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 724 N LEAVITT ST | West Town | 36 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 10842 S AVENUE F | East Side | 10 | Completed | 3 days | Phone Call | City 311 |
| 8/11/2025 | 2638 W THOMAS ST | West Town | 36 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 2641 W THOMAS ST | West Town | 36 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 2853 W FARRAGUT AVE | Lincoln Square | 39 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 5825 N CENTRAL PARK AVE | North Park | 39 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 5829 N CENTRAL PARK AVE | North Park | 39 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 3727 N JANSSEN AVE | Lake View | 44 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 3733 N GREENVIEW AVE | Lake View | 44 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 5429 N LINDER AVE | Jefferson Park | 45 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 5425 N LINDER AVE | Jefferson Park | 45 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 2234 N CLEVELAND AVE | Lincoln Park | 43 | Completed | 2 days | Phone Call | City 311 |
| 8/11/2025 | 5129 W STRONG ST | Jefferson Park | 45 | Completed | 1 day | Phone Call | City 311 |
| 8/11/2025 | 6243 N TALMAN AVE | West Ridge | 50 | Completed | 1 day | Phone Call | City 311 |