RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4523 locations in the last 30 days (4678 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.

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

53,552 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/1/20265726 N MARMORA AVEJefferson Park45Completed1 dayPhone CallCity 311
9/1/20264731 S PAULINA STNew City20Completed1 dayPhone CallCity 311
9/1/20264740 N ASHLAND AVEUptown47Completed15 daysPhone CallCity 311
9/1/20265348 W WARNER AVEPortage Park38Completed1 dayPhone CallCity 311
9/1/20267648 S MAPLEWOOD AVEAshburn18Completed3 daysInternetCity 311
9/1/20263647 S UNION AVEBridgeport11Completed14 daysInternetCity 311
9/1/20262853 W 40TH STBrighton Park12Completed14 daysAlderman's OfficeCity 311
9/1/20265911 W ERIE STAustin29Completed3 daysPhone CallCity 311
9/1/20264453 N LAMON AVEPortage Park45Completed14 daysAlderman's OfficeCity 311
9/1/20264611 S HARDING AVEArcher Heights14Completed7 daysAlderman's OfficeCity 311
9/1/20264538 N AVERS AVEAlbany Park33Completed16 daysPhone CallCity 311
9/1/2026531 W ADDISON STLake View46Completed14 daysInternetCity 311
9/1/20266717 W 64TH PLClearing13Completed13 daysInternetCity 311
9/1/20265401 S LOCKWOOD AVEGarfield Ridge23Completed14 daysPhone CallCity 311
9/1/20261257 W ADDISON STLake View44Completed10 daysInternetCity 311
9/1/2026360 N GREEN STNear West Side27Completed10 daysMobile DeviceCity 311
9/1/20264733 N TRIPP AVEAlbany Park39Completed13 daysPhone CallCity 311
9/1/20265600 S LOOMIS STWest Englewood16Completed15 daysPhone CallCity 311
9/1/20261707 W ROSCOE STLake View32Completed15 daysMobile DeviceCity 311
9/1/20262121 N SEMINARY AVELincoln Park43Completed10 daysPhone CallCity 311
9/1/20262509 N HALSTED STLincoln Park43Completed14 daysInternetCity 311
9/1/20263856 N CLAREMONT AVENorth Center47Completed15 daysInternetCity 311
9/1/20266840 S MAPLEWOOD AVEChicago Lawn16Completed14 daysPhone CallCity 311
9/1/20269326 S HOYNE AVEBeverly19Completed13 daysPhone CallCity 311
9/1/20261901 N OAKLEY AVELogan Square32Completed15 daysMobile DeviceCity 311
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