4641 locations in the last 30 days (4799 reports) · Last sighting 17 hours ago
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.
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.
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?
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.
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.
53,761 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 8/11/2025 | 10400 S GREEN BAY AVE | East Side | 10 | Completed | 3 days | Alderman's Office | City 311 |
| 8/11/2025 | 10412 S CAMPBELL AVE | Beverly | 19 | Canceled | 2 days | Internet | City 311 |
| 8/11/2025 | 5358 W DEMING PL | Belmont Cragin | 31 | Completed | 10 days | Phone Call | City 311 |
| 8/11/2025 | 3801 W 59TH PL | West Lawn | 23 | Completed | 16 days | Phone Call | City 311 |
| 8/11/2025 | 3812 N FRANCISCO AVE | Irving Park | 33 | Completed | 14 days | Internet | City 311 |
| 8/11/2025 | 7648 S MORGAN ST | Auburn Gresham | 17 | Completed | 4 days | Internet | City 311 |
| 8/11/2025 | 8246 S MAY ST | Auburn Gresham | 17 | Completed | 4 days | Phone Call | City 311 |
| 8/11/2025 | 2213 W LELAND AVE | Lincoln Square | 47 | Completed | 11 days | Alderman's Office | City 311 |
| 8/11/2025 | 3734 W GIDDINGS ST | Albany Park | 33 | Completed | 11 days | Phone Call | City 311 |
| 8/11/2025 | 5618 N ARTESIAN AVE | West Ridge | 40 | Completed | 8 days | Internet | City 311 |
| 8/11/2025 | 6048 N MAPLEWOOD AVE | West Ridge | 40 | Completed | 8 days | Mobile Device | City 311 |
| 8/11/2025 | 6530 N CHICORA AVE | Forest Glen | 45 | Completed | 11 days | Mobile Device | City 311 |
| 8/11/2025 | 2801 W IRVING PARK RD | Irving Park | 35 | Completed | 11 days | Internet | City 311 |
| 8/11/2025 | 2155 N LOCKWOOD AVE | Belmont Cragin | 36 | Completed | 10 days | Phone Call | City 311 |
| 8/11/2025 | 2155 N LOCKWOOD AVE | Belmont Cragin | 36 | Completed | 10 days | Phone Call | City 311 |
| 8/11/2025 | 2155 N LOCKWOOD AVE | Belmont Cragin | 36 | Completed | 10 days | Phone Call | City 311 |
| 8/11/2025 | 2954 W WILSON AVE | Albany Park | 40 | Completed | 8 days | Internet | City 311 |
| 8/11/2025 | 5224 W BERENICE AVE | Portage Park | 30 | Completed | 2 days | Mobile Device | City 311 |
| 8/11/2025 | 2119 N LARAMIE AVE | Belmont Cragin | 26 | Completed | 8 days | Phone Call | City 311 |
| 8/11/2025 | 2115 N LARRABEE ST | Lincoln Park | 43 | Completed | 14 days | Phone Call | City 311 |
| 8/11/2025 | 2121 N LARRABEE ST | Lincoln Park | 43 | Completed | 14 days | Phone Call | City 311 |
| 8/11/2025 | 2119 N LARRABEE ST | Lincoln Park | 43 | Completed | 14 days | Phone Call | City 311 |
| 8/11/2025 | 5044 W NEWPORT AVE | Portage Park | 31 | Completed | 9 days | Phone Call | City 311 |
| 8/11/2025 | 2119 N LARRABEE ST | Lincoln Park | 43 | Completed | 14 days | Phone Call | City 311 |
| 8/11/2025 | 5523 S NEVA AVE | Garfield Ridge | 13 | Completed | 11 days | Internet | City 311 |