4642 locations in the last 30 days (4811 reports) · Last sighting 9 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.
52,998 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 7/30/2025 | 4924 N MAGNOLIA AVE | Uptown | 47 | Completed | 9 days | Mobile Device | City 311 |
| 7/30/2025 | 3215 S THROOP ST | Bridgeport | 11 | Completed | 7 days | Phone Call | City 311 |
| 7/30/2025 | 4016 W 58TH PL | West Elsdon | 13 | Completed | 5 days | Internet | City 311 |
| 7/30/2025 | 2838 N LAWNDALE AVE | Avondale | 35 | Completed | 8 days | Internet | City 311 |
| 7/30/2025 | 3409 N OZARK AVE | Dunning | 38 | Completed | 8 days | Phone Call | City 311 |
| 7/30/2025 | 4156 N BELL AVE | North Center | 47 | Completed | 9 days | Internet | City 311 |
| 7/30/2025 | 1522 W VICTORIA ST | Edgewater | 48 | Completed | 9 days | Internet | City 311 |
| 7/30/2025 | 5641 N MANGO AVE | Jefferson Park | 45 | Completed | 5 days | Mobile Device | City 311 |
| 7/30/2025 | 2947 N RACINE AVE | Lake View | 44 | Completed | 6 days | Internet | City 311 |
| 7/30/2025 | 2237 W 51ST ST | Gage Park | 15 | Completed | 9 days | Phone Call | City 311 |
| 7/30/2025 | 2703 N HALSTED ST | Lincoln Park | 43 | Completed | 5 days | Internet | City 311 |
| 7/30/2025 | 2239 N CLEVELAND AVE | Lincoln Park | 43 | Completed | 5 days | Phone Call | City 311 |
| 7/30/2025 | 649 W WELLINGTON AVE | Lake View | 44 | Completed | 6 days | Alderman's Office | City 311 |
| 7/30/2025 | 3909 N NEVA AVE | Dunning | 38 | Completed | 8 days | Alderman's Office | City 311 |
| 7/30/2025 | 2211 N HARLEM AVE | Austin | 29 | Completed | 7 days | Internet | City 311 |
| 7/30/2025 | 2820 N KILDARE AVE | Hermosa | 31 | Completed | 13 days | Mobile Device | City 311 |
| 7/30/2025 | 7926 S WABASH AVE | Chatham | 6 | Completed | 7 days | Phone Call | City 311 |
| 7/30/2025 | 4425 W ROSCOE ST | Irving Park | 30 | Completed | 8 days | Phone Call | City 311 |
| 7/30/2025 | 3819 W FILLMORE ST | North Lawndale | 24 | Completed | 12 days | Internet | City 311 |
| 7/30/2025 | 5367 N NORDICA AVE | Norwood Park | 41 | Completed | 8 days | Phone Call | City 311 |
| 7/30/2025 | 5361 N NORDICA AVE | Norwood Park | 41 | Completed | 8 days | Phone Call | City 311 |
| 7/30/2025 | 4017 N PLAINFIELD AVE | Dunning | 38 | Completed | 8 days | Alderman's Office | City 311 |
| 7/30/2025 | 3643 W 70TH ST | West Lawn | 23 | Completed | 9 days | Alderman's Office | City 311 |
| 7/30/2025 | 6316 N CENTRAL PARK AVE | North Park | 50 | Completed | 8 days | Phone Call | City 311 |
| 7/30/2025 | 1728 W TOUHY AVE | Rogers Park | 49 | Completed | 6 days | Phone Call | City 311 |