4515 locations in the last 30 days (4683 reports) · Last sighting 21 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.
52,821 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 7/28/2025 | 7210 W MYRTLE AVE | Norwood Park | 41 | Completed | 7 days | Phone Call | City 311 |
| 7/28/2025 | 3132 N MARMORA AVE | Belmont Cragin | 30 | Completed | 9 days | Internet | City 311 |
| 7/28/2025 | 6222 N NORDICA AVE | Norwood Park | 41 | Completed | 7 days | Mobile Device | City 311 |
| 7/28/2025 | 5936 S MAPLEWOOD AVE | Chicago Lawn | 16 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 2763 N SPAULDING AVE | Logan Square | 35 | Completed | 8 days | Internet | City 311 |
| 7/28/2025 | 5324 N BERNARD ST | North Park | 39 | Completed | 7 days | Internet | City 311 |
| 7/28/2025 | 2339 N KARLOV AVE | Hermosa | 35 | Completed | 8 days | Mobile Device | City 311 |
| 7/28/2025 | 5750 S KOSTNER AVE | West Elsdon | 13 | Completed | 4 days | Phone Call | City 311 |
| 7/28/2025 | 5751 N MERRIMAC AVE | Norwood Park | 45 | Completed | 7 days | Alderman's Office | City 311 |
| 7/28/2025 | 3638 N OKETO AVE | Dunning | 38 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 3446 N MILWAUKEE AVE | Irving Park | 30 | Completed | 9 days | Alderman's Office | City 311 |
| 7/28/2025 | 1530 N AVERS AVE | Humboldt Park | 26 | Completed | 8 days | Phone Call | City 311 |
| 7/28/2025 | 11225 S HOMAN AVE | Mount Greenwood | 19 | Completed | 7 days | Alderman's Office | City 311 |
| 7/28/2025 | 3441 N MILWAUKEE AVE | Irving Park | 30 | Completed | 9 days | Alderman's Office | City 311 |
| 7/28/2025 | 31 N MENARD AVE | Austin | 29 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 11934 S HARVARD AVE | West Pullman | 9 | Completed | 8 days | Phone Call | City 311 |
| 7/28/2025 | 2508 W WALTON ST | West Town | 36 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 5301 S LOOMIS BLVD | New City | 20 | Completed | 7 days | Phone Call | City 311 |
| 7/28/2025 | 5901 N KENMORE AVE | Edgewater | 48 | Completed | 7 days | Mobile Device | City 311 |
| 7/28/2025 | 5236 W BERTEAU AVE | Portage Park | 38 | Completed | 10 days | Internet | City 311 |
| 7/28/2025 | 4113 N CLAREMONT AVE | North Center | 47 | Completed | 9 days | Mobile Device | City 311 |
| 7/28/2025 | 466 W 126TH ST | West Pullman | 9 | Completed | 8 days | Alderman's Office | City 311 |
| 7/28/2025 | 3350 W FULTON BLVD | East Garfield Park | 28 | Completed | 8 days | Phone Call | City 311 |
| 7/28/2025 | 4745 N LOTUS AVE | Portage Park | 45 | Completed | 7 days | Phone Call | City 311 |
| 7/28/2025 | 2928 W COYLE | West Ridge | 50 | Completed | 9 days | Salesforce Mobile App | City 311 |