RatCity — Chicago Rat and Rodent Sightings Map

RatCity

47 locations in the last day (52 reports) · Last sighting 14 hours ago

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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

58,615 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/29/20261629 N KIMBALL AVEHumboldt Park26Open—Mobile DeviceCity 311
10/29/20264544 N AUSTIN AVEPortage Park38Open—Phone CallCity 311
10/29/20263020 W BLOOMINGDALE AVELogan Square26Open—Mobile DeviceCity 311
10/29/20265641 S KILDARE AVEWest Elsdon13Open—Phone CallCity 311
10/29/20265637 S KILDARE AVEWest Elsdon13Open—Phone CallCity 311
10/29/20264337 S MARSHFIELD AVENew City15Open—Mobile DeviceCity 311
10/29/20265311 W ADDISON STPortage Park30Open—InternetCity 311
10/29/20262231 N SEMINARY AVELincoln Park43Open—Phone CallCity 311
10/29/20264000 S LAKE PARK AVEOakland4Open—Phone CallCity 311
10/29/20263619 N JANSSEN AVELake View44Open—InternetCity 311
10/29/20264536 S KOMENSKY AVEArcher Heights14Open—Mobile DeviceCity 311
10/29/20262702 S HILLOCK AVEBridgeport11Open—Mobile DeviceCity 311
10/29/20262745 W 16TH STNorth Lawndale24Open—Phone CallCity 311
10/29/20262808 N SAWYER AVEAvondale35Open—Alderman's OfficeCity 311
10/29/20261536 W MONROE STNear West Side34Open—Phone CallCity 311
10/29/20267940 S BLACKSTONE AVEAvalon Park8Open—InternetCity 311
10/29/20264519 N OAKLEY AVELincoln Square47Open—Mobile DeviceCity 311
10/29/20263940 W DICKENS AVELogan Square35Open—InternetCity 311
10/29/20263601 W WOLFRAM STAvondale35Open—Mobile DeviceCity 311
10/29/20262111 W Lexington STWest Town1Open—Phone CallCity 311
10/29/20261135 N WINCHESTER AVEWest Town1Open—Phone CallCity 311
10/29/20263671 N ELSTON AVEIrving Park33Open—Mobile DeviceCity 311
10/29/202611550 S ARTESIAN AVEMorgan Park19Open—Phone CallCity 311
10/29/20266226 N LEADER AVEForest Glen39Open—Phone CallCity 311
10/29/20262225 N SPRINGFIELD AVELogan Square35Open—Phone CallCity 311
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