4500 locations in the last 30 days (4667 reports) · Last sighting 23 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.
52,821 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 7/28/2025 | 4701 N ASHLAND AVE | Uptown | 47 | Completed | 10 days | Internet | City 311 |
| 7/28/2025 | 7149 S EUCLID AVE | South Shore | 5 | Completed | 7 days | Phone Call | City 311 |
| 7/28/2025 | 7742 S EAST END AVE | South Shore | 8 | Completed | 8 days | Phone Call | City 311 |
| 7/28/2025 | 1127 N CHRISTIANA AVE | Humboldt Park | 26 | Completed | 9 days | Alderman's Office | City 311 |
| 7/28/2025 | 4922 S KILDARE AVE | Archer Heights | 14 | Completed | 4 days | Mobile Device | City 311 |
| 7/28/2025 | 1921 N CAMPBELL AVE | Logan Square | 1 | Completed | 8 days | Alderman's Office | City 311 |
| 7/28/2025 | 3708 W 61ST ST | West Lawn | 23 | Completed | 7 days | Alderman's Office | City 311 |
| 7/28/2025 | 8719 S ABERDEEN ST | Auburn Gresham | 21 | Completed | 8 days | Internet | City 311 |
| 7/28/2025 | 6245 S KEDZIE AVE | Chicago Lawn | 14 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 2910 S WENTWORTH AVE | Armour Square | 11 | Completed | 9 days | Internet | City 311 |
| 7/28/2025 | 505 W BELDEN AVE | Lincoln Park | 43 | Completed | 7 days | Mobile Device | City 311 |
| 7/28/2025 | 5654 W BYRON ST | Portage Park | 38 | Completed | 10 days | Internet | City 311 |
| 7/28/2025 | 1737 W MELROSE ST | Lake View | 32 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 9804 S MUSKEGON AVE | South Deering | 10 | Completed | 7 days | Phone Call | City 311 |
| 7/28/2025 | 701 W BUCKINGHAM PL | Lake View | 44 | Completed | 8 days | Internet | City 311 |
| 7/28/2025 | 4549 N CENTRAL AVE | Portage Park | 45 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 3351 W 60TH PL | Chicago Lawn | 14 | Completed | 9 days | Internet | City 311 |
| 7/28/2025 | 900 N DAMEN AVE | West Town | 36 | Completed | 9 days | Phone Call | City 311 |
| 7/28/2025 | 7925 S ALBANY AVE | Ashburn | 18 | Completed | 7 days | Phone Call | City 311 |
| 7/28/2025 | 1909 N LOWELL AVE | Hermosa | 26 | Completed | 10 days | Mobile Device | City 311 |
| 7/28/2025 | 2510 W IOWA ST | West Town | 36 | Completed | 9 days | Internet | City 311 |
| 7/28/2025 | 1931 S ALLPORT ST | Lower West Side | 25 | Completed | 10 days | Internet | City 311 |
| 7/28/2025 | 3200 N WILTON AVE | Lake View | 44 | Completed | 8 days | Internet | City 311 |
| 7/28/2025 | 3510 W WALNUT ST | East Garfield Park | 28 | Completed | 8 days | Internet | City 311 |
| 7/28/2025 | 3449 W FULTON BLVD | East Garfield Park | 28 | Completed | 8 days | Internet | City 311 |