CO2 Emissions in the United States increased to 4632160 KT in 2024 from 4618270 KT in 2023. CO2 Emissions in the United States averaged 4868161.25 KT from 1960 until 2024, reaching an all time high of 6135287.21 KT in 2007 and a record low of 2880505.51 KT in 1961.