RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4544 locations in the last 30 days (4698 reports) · Last sighting yesterday

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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.

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

53,761 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/5/20261253 N ROCKWELL STWest Town26Completed8 daysMobile DeviceCity 311
7/23/20261253 N SPRINGFIELD AVEHumboldt Park36Completed11 daysPhone CallCity 311
9/4/20261253 W 47TH STNew City20Completed6 daysMobile DeviceCity 311
10/22/20251253 W CARMEN AVEUptown47Completed2 daysInternetCity 311
4/6/20261253 W FLOURNOY STNear West Side34Completed2 daysInternetCity 311
8/28/20251253 W NEWPORT AVELake View44Completed5 daysInternetCity 311
1/8/20261254 N AVERS AVEHumboldt Park36Completed1 dayMobile DeviceCity 311
12/6/20251254 N AVERS AVEHumboldt Park36Completed3 daysMobile DeviceCity 311
4/13/20261254 N AVERS AVEHumboldt Park36Completed0 daysMobile DeviceCity 311
10/30/20251254 N AVERS AVEHumboldt Park36Completed5 daysMobile DeviceCity 311
6/4/20261254 N AVERS AVEHumboldt Park36Completed4 daysMobile DeviceCity 311
2/3/20261254 N AVERS AVEHumboldt Park36Completed0 daysMobile DeviceCity 311
2/7/20261254 N AVERS AVEHumboldt Park36Completed2 daysMobile DeviceCity 311
8/13/20251254 N AVERS AVEHumboldt Park36Completed8 daysMobile DeviceCity 311
9/18/20251254 N AVERS AVEHumboldt Park36Completed11 daysMobile DeviceCity 311
7/28/20261254 N AVERS AVEHumboldt Park36Completed14 daysMobile DeviceCity 311
10/17/20251254 N CLEAVER STWest Town1Completed5 daysMobile DeviceCity 311
5/5/20261254 N MASON AVEAustin29Completed6 daysPhone CallCity 311
8/19/20251254 S WASHTENAW AVENorth Lawndale28Completed8 daysAlderman's OfficeCity 311
9/12/20251254 W 102ND PLWashington Heights21Completed10 daysPhone CallCity 311
9/29/20261254 W ADDISON STLake View44Open—Phone CallCity 311
8/8/20251254 W LEXINGTON STNear West Side34Completed4 daysInternetCity 311
8/19/20261254 W LEXINGTON STNear West Side34Completed5 daysInternetCity 311
10/30/20251254 W LEXINGTON STNear West Side34Completed1 dayInternetCity 311
1/5/202612558 S PRINCETON AVEWest Pullman9Completed1 dayInternetCity 311
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