RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4209 locations in the last 30 days (4393 reports) · Last sighting 17 hours ago

📰 Blog
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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.

32080fewer → more

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.

📰 This week’s rat recap

Weekly Rat Trends — Nov 2–Nov 8, 2026

  • 🐀 948 new reports — down 7% from the week before
  • 👑 Lake View is Rat King with 67 reports
  • 📈 Biggest jump: Logan Square, up 15 from last week
  • 🏙️ The city took 9.7 days on average to resolve a complaint
Read the full recap →

Why Chicago keeps score on its rats

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?

What’s actually on the map

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.

Reading 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.

Browse every sighting

59,989 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
1/5/20261717 N MARSHFIELD AVEWest Town32Completed1 dayInternetCity 311
1/5/20268322 S SANGAMON STAuburn Gresham17Completed2 daysInternetCity 311
1/5/20264349 N CAMPBELL AVENorth Center47Completed1 dayMobile DeviceCity 311
1/5/20267375 N WINCHESTER AVERogers Park49Completed1 dayInternetCity 311
1/5/20267363 N WINCHESTER AVERogers Park49Completed1 dayInternetCity 311
1/5/20263715 N CICERO AVEPortage Park30Completed1 dayInternetCity 311
1/5/20265850 N MULLIGAN AVENorwood Park45Completed1 dayPhone CallCity 311
1/5/20266049 S MAYFIELD AVEClearing13Completed1 dayPhone CallCity 311
1/5/20261123 W 19TH PLLower West Side25Completed1 dayPhone CallCity 311
1/5/20262034 N KOSTNER AVEHermosa26Completed1 dayPhone CallCity 311
1/5/20262242 W MONROE STNear West Side27Completed1 dayInternetCity 311
1/5/20262310 N HOYNE AVELogan Square32Completed1 dayInternetCity 311
1/5/20263215 W 108TH STMount Greenwood19Completed1 dayInternetCity 311
1/5/202611550 S CHURCH STMorgan Park19Completed1 dayInternetCity 311
1/5/202611550 S CHURCH STMorgan Park19Completed1 dayInternetCity 311
1/5/202612441 S EGGLESTON AVEWest Pullman9Completed1 dayInternetCity 311
1/5/202612126 S ADA STWest Pullman21Completed1 dayInternetCity 311
1/5/20261450 W 112TH PLMorgan Park21Completed1 dayInternetCity 311
1/5/202612327 S PARNELL AVEWest Pullman9Completed1 dayInternetCity 311
1/5/20265200 S CARPENTER STNew City20Completed1 dayInternetCity 311
1/5/202612558 S PRINCETON AVEWest Pullman9Completed1 dayInternetCity 311
1/5/20261246 W 50TH STNew City20Completed1 dayInternetCity 311
1/5/202610241 S AVENUE NEast Side10Completed1 dayWalk-inCity 311
1/5/20262921 N KEDZIE AVEAvondale35Completed1 dayAlderman's OfficeCity 311
1/5/20263604 W 111TH STMount Greenwood19Completed0 daysAlderman's OfficeCity 311
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