Short answer: yes, in some cities—but not as often as you might think. If you're walking around a city that has a strong organics program, you'll sometimes see public trash cans set up as a three-stream station: one bin for compostable food scraps and yard waste, one for recycling, and one for general waste. This is a form of city waste separation that's becoming more common, though it still depends heavily on local infrastructure. San Francisco is probably the most famous example. Its public bins often use green for compost, blue for recycling, and black for landfill. Seattle, Vancouver, Toronto, Milan, Barcelona, and Seoul also have public food-waste or organics collection in certain areas, especially parks, plazas, transit stations, and farmers markets.
But many other cities still only offer general waste and recycling on the street. Why? Public composting is harder than it looks. Food scraps can smell, attract pests, and need frequent emptying. Cities also need a reliable place to process the material, plus trucks and staff to collect it separately. If the infrastructure isn't there, a compost bin can become just another trash can—or worse, a contamination problem.
When a public bin does separate compost from general waste, the labels usually tell you what to do. Think of it as compost vs general waste: if the material is food or plant-based and the bin says organics, it likely belongs there. Look for words like "Compost," "Organics," "Food Scraps," or "Green Bin." Compost bins are often green, but color coding isn't universal, so read the signs. Acceptable items usually include fruit and vegetable scraps, coffee grounds, tea bags, and food-soiled paper. Some programs also accept meat, dairy, and compostable serviceware, but many do not. Recycling goes in the blue bin. General waste—things like chip bags, wrappers, Styrofoam, and dirty diapers—goes in the black or gray bin.
One common mistake is assuming that anything labeled "compostable" belongs in the compost bin. In reality, many compostable cups, forks, and takeout containers only break down in industrial composting facilities. If the public bin is for food scraps only, that "compostable" fork may still need to go in general waste. Another mistake is tossing a coffee cup into compost when it has a plastic lining. When in doubt, follow the pictures and text on the bin, not just the color.
If you don't see a compost bin, don't put food scraps in the recycling bin. That contaminates the recycling stream. Put them in general waste instead, unless there's a clearly marked organics bin nearby. In cities without public compost collection, you might still find compost drop-off sites at farmers markets or community gardens.
So, are there urban trash cans that separate compost from general waste? Yes, but they're not everywhere. Urban compost bins tend to show up in cities with mature organics programs, strong public signage, and frequent collection. When they work well, they keep food scraps out of landfills and turn them into compost. When they're confusing or poorly maintained, they can create more problems than they solve. The best thing you can do as a pedestrian is pause for five seconds, read the bin, and sort as well as you can.