RatCity — Chicago Rat and Rodent Sightings Map

RatCity

3969 locations in the last 30 days (4146 reports) · Last sighting yesterday

📰 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.

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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

60,312 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/2/2025605 E 87TH STChatham8Completed9 daysPhone CallCity 311
9/10/20268118 S ELLIS AVEChatham8Completed8 daysMobile DeviceCity 311
8/14/20257938 S MERRILL AVESouth Chicago8Completed13 daysAlderman's OfficeCity 311
8/27/20258235 S DREXEL AVEChatham8Completed6 daysPhone CallCity 311
8/26/20258511 S DANTE AVEAvalon Park8Completed7 daysPhone CallCity 311
11/3/20267500 S CONSTANCE AVESouth Shore8Completed7 daysPhone CallCity 311
9/10/20267834 S JEFFERY BLVDSouth Shore8Completed8 daysPhone CallCity 311
8/26/20259001 S ELLIS AVEBurnside8Completed7 daysAlderman's OfficeCity 311
10/23/20268040 S EUCLID AVESouth Chicago8Completed14 daysPhone CallCity 311
10/24/20269004 S CHAPPEL AVECalumet Heights8Completed6 daysInternetCity 311
12/29/20258102 S INGLESIDEChatham8Completed2 daysSalesforce Mobile AppCity 311
12/20/20258357 S CONSTANCE AVEAvalon Park8Completed2 daysInternetCity 311
9/10/2026739 E 91ST PLChatham8Completed7 daysPhone CallCity 311
10/24/20267622 S RIDGELAND AVESouth Shore8Completed5 daysMobile DeviceCity 311
7/6/2026821 E 82ND STChatham8Completed2 daysInternetCity 311
12/23/20257716 S MARYLAND AVEGreater Grand Crossing8Completed1 dayPhone CallCity 311
12/12/20257741 S CHAPPEL AVESouth Shore8Completed3 daysInternetCity 311
12/17/20251126 E 76TH STGreater Grand Crossing8Completed1 dayInternetCity 311
7/9/20268024 S MARYLAND AVEChatham8Completed5 daysInternetCity 311
8/20/20257638 S EUCLID AVESouth Shore8Completed7 daysInternetCity 311
7/13/20261033 E 100TH PLPullman8Completed1 dayInternetCity 311
8/15/2025740 E 92ND PLChatham8Completed12 daysInternetCity 311
8/26/20257421 S DANTE AVESouth Shore8Completed7 daysInternetCity 311
8/20/20259143 S ELLIS AVEBurnside8Completed7 daysPhone CallCity 311
8/18/20257335 S KENWOOD AVESouth Shore8Completed9 daysInternetCity 311
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