I’d start by finding the exact make and model of the trash can. Check the underside of the lid, the inside of the body, the hinge area, and any metal plate or sticker for a brand name, part number, or asset tag. If the can belongs to the city or a property manager, that tag is useful because public works, sanitation, or facilities maintenance may already have a replacement-parts source on file.
Next, contact the manufacturer directly. Send clear photos of the whole can, the damaged part, and any labels, plus the model number and dimensions. Manufacturers and commercial distributors often have exploded parts diagrams, even for older municipal bins. If you cannot find the brand, search using the part number rather than generic words like “trash can lid.” That usually gives much better results.
For city-owned cans, ask the department responsible for street furniture or waste collection. They may not sell parts to the public, but they can often tell you the supplier or the approved replacement. Local janitorial suppliers, landscape and site-furniture dealers, and commercial trash can distributors are also good contacts. Some will order individual parts such as lids, hinges, wheels, axles, locking bars, liners, and mounting hardware.
If the can is old or discontinued, measure carefully before buying anything: lid diameter, opening size, hinge spacing, bolt-hole pattern, wheel size, axle length, and material thickness. Compare those measurements with aftermarket parts and ask about compatibility and return policies. For unusual or custom urban cans, a local metal fabricator can often reproduce a simple bracket, hinge, or lid. Salvage yards and maintenance crews sometimes keep spare parts from retired bins, too. The main thing is to identify the can precisely, use part numbers when possible, and confirm fit before you order.