4436 locations in the last 30 days (4597 reports) · Last sighting 21 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.
57,251 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 10/20/2025 | 629 W BUCKINGHAM PL | Lake View | 44 | Completed | 3 days | Alderman's Office | City 311 |
| 10/20/2025 | 2314 N MASON | Belmont Cragin | 36 | Completed | 4 days | Salesforce Mobile App | City 311 |
| 10/20/2025 | 4856 W CHICAGO AVE | Austin | 37 | Completed | 7 days | Internet | City 311 |
| 10/20/2025 | 1514 S KILBOURN AVE | North Lawndale | 24 | Completed | 8 days | Mobile Device | City 311 |
| 10/20/2025 | 10901 S RIDGEWAY AVE | Mount Greenwood | 19 | Completed | 3 days | Alderman's Office | City 311 |
| 10/20/2025 | 6501 N NORDICA AVE | Norwood Park | 41 | Completed | 8 days | Phone Call | City 311 |
| 10/20/2025 | 4906 W CONCORD PL | Austin | 37 | Completed | 7 days | Phone Call | City 311 |
| 10/20/2025 | 5543 W BYRON ST | Portage Park | 30 | Completed | 7 days | Phone Call | City 311 |
| 10/20/2025 | 1608 N LUNA AVE | Austin | 37 | Completed | 7 days | Phone Call | City 311 |
| 10/20/2025 | 5251 S MARSHFIELD AVE | New City | 16 | Completed | 3 days | Phone Call | City 311 |
| 10/20/2025 | 2678 N ORCHARD ST | Lincoln Park | 43 | Completed | 3 days | Phone Call | City 311 |
| 10/20/2025 | 711 S DEARBORN ST | Loop | 4 | Completed | 3 days | Internet | City 311 |
| 10/20/2025 | 4723 N PAULINA ST | Uptown | 47 | Completed | 3 days | Phone Call | City 311 |
| 10/20/2025 | 2429 N NEWCASTLE AVE | Montclare | 36 | Completed | 4 days | Phone Call | City 311 |
| 10/20/2025 | 918 N OAKLEY BLVD | West Town | 36 | Completed | 7 days | Alderman's Office | City 311 |
| 10/20/2025 | 2400 W IOWA ST | West Town | 36 | Completed | 7 days | Phone Call | City 311 |
| 10/20/2025 | 4321 S PRAIRIE AVE | Grand Boulevard | 3 | Completed | 3 days | Internet | City 311 |
| 10/20/2025 | 8734 S HERMITAGE AVE | Auburn Gresham | 18 | Completed | 4 days | Mobile Device | City 311 |
| 10/20/2025 | 4714 S DAMEN AVE | New City | 15 | Completed | 8 days | Phone Call | City 311 |
| 10/20/2025 | 5578 N LEONARD AVE | Jefferson Park | 39 | Completed | 7 days | Phone Call | City 311 |
| 10/20/2025 | 5215 N AUSTIN AVE | Jefferson Park | 45 | Completed | 4 days | Phone Call | City 311 |
| 10/20/2025 | 4533 W JACKSON BLVD | West Garfield Park | 28 | Completed | 3 days | Internet | City 311 |
| 10/20/2025 | 11316 S DR MARTIN LUTHER KING JR DR | Roseland | 9 | Completed | 4 days | Internet | City 311 |
| 10/20/2025 | 9409 S BISHOP ST | Washington Heights | 21 | Completed | 2 days | Phone Call | City 311 |
| 10/20/2025 | 6408 W RAVEN ST | Norwood Park | 45 | Completed | 4 days | Phone Call | City 311 |