RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4842 locations in the last 30 days (5003 reports) · Last sighting 16 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.

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.

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

54,983 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
2/8/20268320 S ADA STAuburn Gresham17Completed1 dayPhone CallCity 311
10/7/20254130 W NELSON STAvondale31Completed1 dayAlderman's OfficeCity 311
4/1/20264455 S LOWE AVENew City15Completed1 dayPhone CallCity 311
6/11/20264015 W 56TH STWest Elsdon13Completed1 dayAlderman's OfficeCity 311
4/7/202610136 S GREEN STWashington Heights21Completed1 dayInternetCity 311
4/2/20263806 W 86TH PLAshburn18Completed1 dayPhone CallCity 311
7/14/20262919 N KARLOV AVEAvondale31Completed1 dayPhone CallCity 311
4/9/20267123 S ST LAWRENCE AVEGreater Grand Crossing6Completed1 dayPhone CallCity 311
8/14/20253353 W 114TH STMount Greenwood19Completed1 dayPhone CallCity 311
6/24/20262046 N LARRABEE STLincoln Park43Completed1 dayPhone CallCity 311
4/16/2026439 N WALLER AVEAustin29Completed1 dayMobile DeviceCity 311
11/12/20256551 S CALIFORNIA AVEChicago Lawn16Completed1 dayMobile DeviceCity 311
6/4/20261012 N SPRINGFIELD AVEHumboldt Park37Completed1 dayMobile DeviceCity 311
5/18/20261817 N CLEVELANDLincoln Park43Completed1 daySalesforce Mobile AppCity 311
4/7/20263359 W 79TH STAshburn18Completed1 dayMobile DeviceCity 311
5/19/20263348 W VAN BUREN STEast Garfield Park28Completed1 dayPhone CallCity 311
3/31/20262934 N AVERS AVEAvondale31Completed1 dayMobile DeviceCity 311
5/28/20265210 S MORGAN STNew City20Completed1 dayPhone CallCity 311
4/21/2026903 N HERMITAGE AVEWest Town1Completed1 dayInternetCity 311
11/25/20255910 W DAKIN STPortage Park38Completed1 dayAlderman's OfficeCity 311
11/13/20252812 N MULLIGAN AVEBelmont Cragin30Completed1 dayAlderman's OfficeCity 311
10/22/20257619 S BISHOP STAuburn Gresham17Completed1 dayPhone CallCity 311
1/21/20263001 S PRINCETON AVEArmour Square11Completed1 dayPhone CallCity 311
1/15/2026537 W 31ST STBridgeport11Completed1 dayAlderman's OfficeCity 311
1/4/2026811 W BRADLEY PLLake View46Completed1 dayMobile DeviceCity 311
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