RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4283 locations in the last 30 days (4469 reports) · Last sighting 19 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.

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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 — Oct 26–Nov 1, 2026

  • 🐀 1,021 new reports — down 9% from the week before
  • 👑 Lake View is Rat King with 70 reports
  • 📈 Biggest jump: Lincoln Park, up 15 from last week
  • 🏙️ The city took 11.2 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

59,354 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/29/2026717 N CHRISTIANA AVEHumboldt Park27Completed2 daysInternetCity 311
8/18/2025547 N AVERS AVEHumboldt Park27Completed11 daysPhone CallCity 311
4/23/20261753 N KILDARE AVEHumboldt Park26Completed1 dayInternetCity 311
9/26/20251616 N KILBOURN AVEHumboldt Park37Completed6 daysInternetCity 311
7/9/20263655 W FERDINAND STHumboldt Park27Completed7 daysInternetCity 311
10/9/20263574 W WABANSIA AVEHumboldt Park26Completed13 daysInternetCity 311
4/29/20261227 N AVERS AVEHumboldt Park36Completed1 dayInternetCity 311
8/14/2025735 N SPAULDING AVEHumboldt Park27Completed12 daysPhone CallCity 311
4/21/20264326 W THOMAS STHumboldt Park37Completed1 dayMobile DeviceCity 311
10/30/20261621 N KARLOV AVEHumboldt Park26Open—InternetCity 311
12/13/20251245 N KOSTNER AVEHumboldt Park37Completed2 daysMobile DeviceCity 311
11/5/20261217 N AVERS AVEHumboldt Park36Open—Mobile DeviceCity 311
9/27/20251118 N LAWNDALE AVEHumboldt Park27Completed9 daysInternetCity 311
8/16/20253655 W DIVISION STHumboldt Park36Completed9 daysInternetCity 311
9/21/20263520 W FRANKLIN BLVDHumboldt Park27Completed15 daysPhone CallCity 311
8/20/20261515 N SPRINGFIELD AVEHumboldt Park26Completed13 daysPhone CallCity 311
6/1/20264329 W THOMAS STHumboldt Park37Completed3 daysInternetCity 311
10/7/2025856 N LAWNDALE AVEHumboldt Park27Completed13 daysPhone CallCity 311
9/19/20263341 W LE MOYNE STHumboldt Park26Completed12 daysInternetCity 311
6/9/20264044 W HIRSCH STHumboldt Park36Completed6 daysInternetCity 311
7/26/20261624 N ALBANY AVEHumboldt Park26Completed9 daysMobile DeviceCity 311
7/5/20264049 W POTOMAC AVEHumboldt Park37Completed9 daysPhone CallCity 311
7/29/20251312 N KEDZIE AVEHumboldt Park26Completed8 daysMobile DeviceCity 311
6/2/20263232 W CORTEZ STHumboldt Park26Completed2 daysPhone CallCity 311
10/14/20263508 W PIERCE AVEHumboldt Park26Completed13 daysInternetCity 311
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