That's an excellent question that touches on both ergonomics and practical public design. The generally accepted standard height for a comfortable-to-use outdoor trash bin is between 36 and 42 inches (approximately 91 to 107 cm) from the ground to the top of the bin's opening or the rim of the receptacle.
This range isn't arbitrary. It's designed to accommodate the average adult user without requiring excessive bending or awkward reaching. A bin within this height allows most people to dispose of trash comfortably while standing, which is crucial for high-traffic public areas, parks, and sidewalks. The specific height within that range can vary based on the bin's primary location and target users. For instance, bins in areas frequented by children or individuals using wheelchairs might be placed at the lower end of the spectrum for better accessibility.
The opening itself, where you actually deposit the waste, is a key factor. It should be clearly visible and easily reachable. A height around 38-40 inches is often considered the sweet spot, making the act of throwing something away effortless and encouraging proper use. Ultimately, the goal is to make public waste disposal intuitive and strain-free, promoting cleaner spaces for everyone.