Maritime transport CO2 emissions (experimental) in United States
United States: Maritime transport CO2 emissions was 9.33 million Tonnes in 2025. ▲ Rising
Maritime transport CO2 emissions in United States, 2019–2025
Source: Organisation for Economic Co-operation and Development. Measured in Tonnes.
Analysis
In 2025, maritime transport co2 emissions in United States stood at 9.33 million Tonnes.
That represents a change of down 7.6% on the previous year and up 3.3% over ten years.
That places United States 3rd out of 138 countries with data for 2025, putting it in the top 10%.
Maritime transport CO2 emissions in United States, year by year
| Year | Tonnes | Change |
|---|---|---|
| 2019 | 9.03 million Tonnes | — |
| 2020 | 8.02 million Tonnes | -11.2% |
| 2021 | 9.52 million Tonnes | +18.7% |
| 2022 | 14.22 million Tonnes | +49.4% |
| 2023 | 10.39 million Tonnes | -27.0% |
| 2024 | 10.09 million Tonnes | -2.9% |
| 2025 | 9.33 million Tonnes | -7.6% |
United States compared with similar countries
- United States's 9.33 million Tonnes is above the median for high income countries, which is 215,872 Tonnes, 43.2× the median. (54 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 9.03 million Tonnes | 9.03 million Tonnes | 9.03 million Tonnes | 1 |
| 2020s | 10.26 million Tonnes | 8.02 million Tonnes | 14.22 million Tonnes | 6 |
Countries ranked near United States
- 1 OECD 54.81 million Tonnes compare
- 2 Türkiye 3.13 million Tonnes compare
- 2 China 24.22 million Tonnes compare
- 2 Mauritania 116,150 Tonnes compare
- 3 Netherlands 2.52 million Tonnes compare
- 3 Croatia 103,936 Tonnes compare
- 4 Brazil 6.01 million Tonnes compare
- 4 Fiji 97,678 Tonnes compare
- 4 Viet Nam 1.07 million Tonnes compare
- 5 Poland 232,237 Tonnes compare
- 5 Spain 4.45 million Tonnes compare
- 5 Cabo Verde 80,380 Tonnes compare
- 6 Australia 4.34 million Tonnes compare
- 6 Lithuania 52,090 Tonnes compare
- 6 Equatorial Guinea 76,064 Tonnes compare
More climate change data for United States
- Emissions from livestock — Emissions (CO2eq) 274,482 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from N2O 60,922 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from CH4 213,560 kt (2050)
- Emissions from livestock — Emissions 229.89 kt (2050)
- Emissions from livestock — Emissions 7,627 kt (2050)
- Emissions from crops — Emissions (CO2eq) 107,381 kt (2050)
- Emissions from crops — Emissions (CO2eq) from N2O 89,068 kt (2050)
- Emissions from crops — Emissions (CO2eq) from CH4 18,313 kt (2050)
- Emissions from crops — Emissions 336.11 kt (2050)
- Emissions from crops — Emissions 654.05 kt (2050)
Frequently asked questions
- What is maritime transport co2 emissions in United States?
- Maritime transport co2 emissions in United States was 9.33 million Tonnes in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest maritime transport co2 emissions recorded in United States?
- The highest recorded value was 14.22 million Tonnes in 2022.
- What is the lowest maritime transport co2 emissions recorded in United States?
- The lowest recorded value was 8.02 million Tonnes in 2020.
- How does United States rank for maritime transport co2 emissions?
- United States ranks 3rd out of 138 countries with data for 2025.
- Is maritime transport co2 emissions rising or falling in United States?
- Over the last ten years it is up 3.3%. The long-run trend across the full record is rising.
- Where does this United States data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Maritime transport CO2 emissions (experimental). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 7 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This experimental dataset includes annual, quarterly, and monthly information on carbon dioxide (CO2) emissions from maritime transport based on ship-tracking information collected via Automatic Identification System (AIS) transponders, covering all large vessels (above 300 gross tonnage) around the world, accessed via the United Nations Global Platform, from 2019 onwards. The CO2 emissions are estimated by the OECD, based on a consistent methodology across countries and include emissions from both domestic and international voyages. The CO2 emissions are classified using the ship-type classification used by the International Maritime Organisation (IMO) distinguishing between 19 vessel categories such as bulk carriers, tankers, and cruise ships. The database provides a measure of CO2 emissions on a territory basis for domestic navigation, which is used for reporting in the UN Framework Convention on Climate Change (UNFCCC) inventories; and also on a residence basis, which is used to estimate the emissions of maritime transport (H50 in the International Standard Industrial Classification of All Economic Activities, or ISIC) in the SEEA Air Emission Accounts (AEAs). Seven components of these CO2 emissions measures can be selected from the ‘Vessel emissions ’ filter. In the tables, these are also shown with the letters A, B, C, D, E, F and G. The aggregate measures of CO2 emissions are calculated as: Domestic navigation = A + C International navigation (memo item) = D + G Air emissions accounts: maritime transport (ISIC H50) = A + B + D + E + F For residence based measures, the allocation of emissions to countries is based on the residence of the companies that operate the ships. More information can be found on the dataset webpage