How much weight can you put in a 20 yard bath tub style dumpster? A 20 yard dumpster can hold approximately 110-130 33-gallon trash bags. It will typically weigh 1-3 tons (2,000-6,000 pounds) when filled, depending on what you’re throwing away. Local landfills charge disposal costs by the ton, so we include a set weight limit as part of your flat-rate price.