4485 locations in the last 30 days (4633 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.
54,350 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 8/20/2025 | 6640 N CALIFORNIA AVE | West Ridge | 50 | Completed | 8 days | Phone Call | City 311 |
| 8/20/2025 | 6750 S KEDVALE AVE | West Lawn | 23 | Completed | 13 days | Phone Call | City 311 |
| 8/20/2025 | 7653 W RASCHER AVE | Norwood Park | 41 | Completed | 8 days | Phone Call | City 311 |
| 8/20/2025 | 3100 S KOMENSKY AVE | South Lawndale | 22 | Completed | 7 days | Alderman's Office | City 311 |
| 8/20/2025 | 9238 S EGGLESTON AVE | Washington Heights | 9 | Completed | 9 days | Phone Call | City 311 |
| 8/20/2025 | 5316 N MILWAUKEE AVE | Jefferson Park | 45 | Completed | 13 days | Phone Call | City 311 |
| 8/20/2025 | 3041 N PARKSIDE AVE | Belmont Cragin | 31 | Completed | 13 days | Phone Call | City 311 |
| 8/20/2025 | 5271 N NORTHWEST HWY | Jefferson Park | 45 | Completed | 13 days | Phone Call | City 311 |
| 8/20/2025 | 5355 N LINDER AVE | Jefferson Park | 45 | Completed | 14 days | Phone Call | City 311 |
| 8/20/2025 | 5234 W IRVING PARK RD | Portage Park | 38 | Completed | 8 days | Phone Call | City 311 |
| 8/20/2025 | 3140 N KENNETH AVE | Hermosa | 31 | Completed | 9 days | Alderman's Office | City 311 |
| 8/20/2025 | 915 N SPRINGFIELD AVE | Humboldt Park | 37 | Completed | 13 days | Phone Call | City 311 |
| 8/20/2025 | 5820 S KENNETH AVE | West Elsdon | 13 | Completed | 9 days | Alderman's Office | City 311 |
| 8/20/2025 | 6009 S NATCHEZ AVE | Clearing | 13 | Completed | 9 days | Alderman's Office | City 311 |
| 8/20/2025 | 2127 N SEMINARY AVE | Lincoln Park | 43 | Completed | 14 days | Internet | City 311 |
| 8/20/2025 | 3547 N RUTHERFORD AVE | Dunning | 38 | Completed | 8 days | Mobile Device | City 311 |
| 8/20/2025 | 6836 W 64TH ST | Clearing | 13 | Completed | 9 days | Alderman's Office | City 311 |
| 8/20/2025 | 318 S SACRAMENTO AVE | East Garfield Park | 28 | Completed | 7 days | Phone Call | City 311 |
| 8/20/2025 | 5720 S MEADE AVE | Garfield Ridge | 13 | Completed | 9 days | Alderman's Office | City 311 |
| 8/20/2025 | 6039 W 59TH ST | Clearing | 13 | Completed | 9 days | Internet | City 311 |
| 8/20/2025 | 2112 W MADISON ST | Near West Side | 27 | Completed | 9 days | Phone Call | City 311 |
| 8/20/2025 | 2968 S LOOMIS ST | Bridgeport | 11 | Completed | 9 days | Phone Call | City 311 |
| 8/20/2025 | 2608 E 74TH PL | South Shore | 7 | Completed | 7 days | Phone Call | City 311 |
| 8/20/2025 | 4100 N LEAVITT ST | North Center | 47 | Completed | 13 days | Phone Call | City 311 |
| 8/20/2025 | 3643 W DIVERSEY AVE | Logan Square | 35 | Completed | 9 days | Phone Call | City 311 |