Data / Rankings / Greenhouse gas emissions from transportation (EPA state inventory) / US states

US states by greenhouse gas emissions from transportation (EPA state inventory)

Texas had the highest greenhouse gas emissions from transportation (EPA state inventory) of 51 states in 2020, at 185.39 million tonnes of CO2 equivalent. District of Columbia had the lowest, at 1 million tonnes of CO2 equivalent. The median was 26.02 million tonnes of CO2 equivalent. Source: the U.S. Environmental Protection Agency.

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Highest185.39Texas
Lowest1District of Columbia
Median26.0251 states

Map of states, 2020

Alabama: 33.71 million tonnes of CO2 equivalentAlaska: 8.08 million tonnes of CO2 equivalentArizona: 35.65 million tonnes of CO2 equivalentArkansas: 19.12 million tonnes of CO2 equivalentCalifornia: 154.46 million tonnes of CO2 equivalentColorado: 26.38 million tonnes of CO2 equivalentConnecticut: 13.77 million tonnes of CO2 equivalentDelaware: 4.94 million tonnes of CO2 equivalentDistrict of Columbia: 1 million tonnes of CO2 equivalentFlorida: 92.98 million tonnes of CO2 equivalentGeorgia: 56.77 million tonnes of CO2 equivalentHawaii: 6.15 million tonnes of CO2 equivalentIdaho: 10.36 million tonnes of CO2 equivalentIllinois: 53.86 million tonnes of CO2 equivalentIndiana: 37.47 million tonnes of CO2 equivalentIowa: 19.99 million tonnes of CO2 equivalentKansas: 16.87 million tonnes of CO2 equivalentKentucky: 29.7 million tonnes of CO2 equivalentLouisiana: 32.26 million tonnes of CO2 equivalentMaine: 6.57 million tonnes of CO2 equivalentMaryland: 26.02 million tonnes of CO2 equivalentMassachusetts: 24.31 million tonnes of CO2 equivalentMichigan: 43.94 million tonnes of CO2 equivalentMinnesota: 27.25 million tonnes of CO2 equivalentMississippi: 22.47 million tonnes of CO2 equivalentMissouri: 35.56 million tonnes of CO2 equivalentMontana: 7.54 million tonnes of CO2 equivalentNebraska: 12.52 million tonnes of CO2 equivalentNevada: 15.5 million tonnes of CO2 equivalentNew Hampshire: 6.06 million tonnes of CO2 equivalentNew Jersey: 36.7 million tonnes of CO2 equivalentNew Mexico: 15.17 million tonnes of CO2 equivalentNew York: 61.79 million tonnes of CO2 equivalentNorth Carolina: 51.55 million tonnes of CO2 equivalentNorth Dakota: 7.91 million tonnes of CO2 equivalentOhio: 56.57 million tonnes of CO2 equivalentOklahoma: 28.1 million tonnes of CO2 equivalentOregon: 19.16 million tonnes of CO2 equivalentPennsylvania: 54.65 million tonnes of CO2 equivalentRhode Island: 3.45 million tonnes of CO2 equivalentSouth Carolina: 29.7 million tonnes of CO2 equivalentSouth Dakota: 6.76 million tonnes of CO2 equivalentTennessee: 41.52 million tonnes of CO2 equivalentTexas: 185.39 million tonnes of CO2 equivalentUtah: 17.36 million tonnes of CO2 equivalentVermont: 2.74 million tonnes of CO2 equivalentVirginia: 46.9 million tonnes of CO2 equivalentWashington: 31.31 million tonnes of CO2 equivalentWest Virginia: 11.65 million tonnes of CO2 equivalentWisconsin: 28.28 million tonnes of CO2 equivalentWyoming: 6.99 million tonnes of CO2 equivalent
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million tonnes of CO2 equivalent, 2020. Source: EPA state greenhouse gas inventory, EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent. Boundaries: U.S. Census Bureau cartographic boundary files.

All states, 2020

Texas: 185.39 million tonnes of CO2 equivalentTexas185.39California: 154.46 million tonnes of CO2 equivalentCalifornia154.46Florida: 92.98 million tonnes of CO2 equivalentFlorida92.98New York: 61.79 million tonnes of CO2 equivalentNew York61.79Georgia: 56.77 million tonnes of CO2 equivalentGeorgia56.77Ohio: 56.57 million tonnes of CO2 equivalentOhio56.57Pennsylvania: 54.65 million tonnes of CO2 equivalentPennsylvania54.65Illinois: 53.86 million tonnes of CO2 equivalentIllinois53.86North Carolina: 51.55 million tonnes of CO2 equivalentNorth Carolina51.55Virginia: 46.9 million tonnes of CO2 equivalentVirginia46.9Michigan: 43.94 million tonnes of CO2 equivalentMichigan43.94Tennessee: 41.52 million tonnes of CO2 equivalentTennessee41.52Indiana: 37.47 million tonnes of CO2 equivalentIndiana37.47New Jersey: 36.7 million tonnes of CO2 equivalentNew Jersey36.7Arizona: 35.65 million tonnes of CO2 equivalentArizona35.65Missouri: 35.56 million tonnes of CO2 equivalentMissouri35.56Alabama: 33.71 million tonnes of CO2 equivalentAlabama33.71Louisiana: 32.26 million tonnes of CO2 equivalentLouisiana32.26Washington: 31.31 million tonnes of CO2 equivalentWashington31.31South Carolina: 29.7 million tonnes of CO2 equivalentSouth Carolina29.7Kentucky: 29.7 million tonnes of CO2 equivalentKentucky29.7Wisconsin: 28.28 million tonnes of CO2 equivalentWisconsin28.28Oklahoma: 28.1 million tonnes of CO2 equivalentOklahoma28.1Minnesota: 27.25 million tonnes of CO2 equivalentMinnesota27.25Colorado: 26.38 million tonnes of CO2 equivalentColorado26.38Maryland: 26.02 million tonnes of CO2 equivalentMaryland26.02Massachusetts: 24.31 million tonnes of CO2 equivalentMassachusetts24.31Mississippi: 22.47 million tonnes of CO2 equivalentMississippi22.47Iowa: 19.99 million tonnes of CO2 equivalentIowa19.99Oregon: 19.16 million tonnes of CO2 equivalentOregon19.16Arkansas: 19.12 million tonnes of CO2 equivalentArkansas19.12Utah: 17.36 million tonnes of CO2 equivalentUtah17.36Kansas: 16.87 million tonnes of CO2 equivalentKansas16.87Nevada: 15.5 million tonnes of CO2 equivalentNevada15.5New Mexico: 15.17 million tonnes of CO2 equivalentNew Mexico15.17Connecticut: 13.77 million tonnes of CO2 equivalentConnecticut13.77Nebraska: 12.52 million tonnes of CO2 equivalentNebraska12.52West Virginia: 11.65 million tonnes of CO2 equivalentWest Virginia11.65Idaho: 10.36 million tonnes of CO2 equivalentIdaho10.36Alaska: 8.08 million tonnes of CO2 equivalentAlaska8.08North Dakota: 7.91 million tonnes of CO2 equivalentNorth Dakota7.91Montana: 7.54 million tonnes of CO2 equivalentMontana7.54Wyoming: 6.99 million tonnes of CO2 equivalentWyoming6.99South Dakota: 6.76 million tonnes of CO2 equivalentSouth Dakota6.76Maine: 6.57 million tonnes of CO2 equivalentMaine6.57Hawaii: 6.15 million tonnes of CO2 equivalentHawaii6.15New Hampshire: 6.06 million tonnes of CO2 equivalentNew Hampshire6.06Delaware: 4.94 million tonnes of CO2 equivalentDelaware4.94Rhode Island: 3.45 million tonnes of CO2 equivalentRhode Island3.45Vermont: 2.74 million tonnes of CO2 equivalentVermont2.74District of Columbia: 1 million tonnes of CO2 equivalentDistrict of Columbia1Texas: 185.39 million tonnes of CO2 equivalentTexas185.39California: 154.46 million tonnes of CO2 equivalentCalifornia154.46Florida: 92.98 million tonnes of CO2 equivalentFlorida92.98New York: 61.79 million tonnes of CO2 equivalentNew York61.79Georgia: 56.77 million tonnes of CO2 equivalentGeorgia56.77Ohio: 56.57 million tonnes of CO2 equivalentOhio56.57Pennsylvania: 54.65 million tonnes of CO2 equivalentPennsylvania54.65Illinois: 53.86 million tonnes of CO2 equivalentIllinois53.86North Carolina: 51.55 million tonnes of CO2 equivalentNorth Carolina51.55Virginia: 46.9 million tonnes of CO2 equivalentVirginia46.9Michigan: 43.94 million tonnes of CO2 equivalentMichigan43.94Tennessee: 41.52 million tonnes of CO2 equivalentTennessee41.52Indiana: 37.47 million tonnes of CO2 equivalentIndiana37.47New Jersey: 36.7 million tonnes of CO2 equivalentNew Jersey36.7Arizona: 35.65 million tonnes of CO2 equivalentArizona35.65Missouri: 35.56 million tonnes of CO2 equivalentMissouri35.56Alabama: 33.71 million tonnes of CO2 equivalentAlabama33.71Louisiana: 32.26 million tonnes of CO2 equivalentLouisiana32.26Washington: 31.31 million tonnes of CO2 equivalentWashington31.31South Carolina: 29.7 million tonnes of CO2 equivalentSouth Carolina29.7Kentucky: 29.7 million tonnes of CO2 equivalentKentucky29.7Wisconsin: 28.28 million tonnes of CO2 equivalentWisconsin28.28Oklahoma: 28.1 million tonnes of CO2 equivalentOklahoma28.1Minnesota: 27.25 million tonnes of CO2 equivalentMinnesota27.25Colorado: 26.38 million tonnes of CO2 equivalentColorado26.38Maryland: 26.02 million tonnes of CO2 equivalentMaryland26.02Massachusetts: 24.31 million tonnes of CO2 equivalentMassachusetts24.31Mississippi: 22.47 million tonnes of CO2 equivalentMississippi22.47Iowa: 19.99 million tonnes of CO2 equivalentIowa19.99Oregon: 19.16 million tonnes of CO2 equivalentOregon19.16Arkansas: 19.12 million tonnes of CO2 equivalentArkansas19.12Utah: 17.36 million tonnes of CO2 equivalentUtah17.36Kansas: 16.87 million tonnes of CO2 equivalentKansas16.87Nevada: 15.5 million tonnes of CO2 equivalentNevada15.5New Mexico: 15.17 million tonnes of CO2 equivalentNew Mexico15.17Connecticut: 13.77 million tonnes of CO2 equivalentConnecticut13.77Nebraska: 12.52 million tonnes of CO2 equivalentNebraska12.52West Virginia: 11.65 million tonnes of CO2 equivalentWest Virginia11.65Idaho: 10.36 million tonnes of CO2 equivalentIdaho10.36Alaska: 8.08 million tonnes of CO2 equivalentAlaska8.08North Dakota: 7.91 million tonnes of CO2 equivalentNorth Dakota7.91Montana: 7.54 million tonnes of CO2 equivalentMontana7.54Wyoming: 6.99 million tonnes of CO2 equivalentWyoming6.99South Dakota: 6.76 million tonnes of CO2 equivalentSouth Dakota6.76Maine: 6.57 million tonnes of CO2 equivalentMaine6.57Hawaii: 6.15 million tonnes of CO2 equivalentHawaii6.15New Hampshire: 6.06 million tonnes of CO2 equivalentNew Hampshire6.06Delaware: 4.94 million tonnes of CO2 equivalentDelaware4.94Rhode Island: 3.45 million tonnes of CO2 equivalentRhode Island3.45Vermont: 2.74 million tonnes of CO2 equivalentVermont2.74District of Columbia: 1 million tonnes of CO2 equivalentDistrict of Columbia1
million tonnes of CO2 equivalent. Source: EPA state greenhouse gas inventory, EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent. Retrieved 2026-10-12.

Full ranking

RankStates2020
million tonnes of CO2 equivalent		Change on 2019
1Texas185.39-13.1%
2California154.46-21.8%
3Florida92.98-15%
4New York61.79-21.6%
5Georgia56.77-9.5%
6Ohio56.57-8.7%
7Pennsylvania54.65-13.8%
8Illinois53.86-17.1%
9North Carolina51.55-9.6%
10Virginia46.9-11.1%
11Michigan43.94-15.1%
12Tennessee41.52-7.4%
13Indiana37.47-7.3%
14New Jersey36.7-21.4%
15Arizona35.65-9.2%
16Missouri35.56-9.3%
17Alabama33.71+0.1%
18Louisiana32.26-6.4%
19Washington31.31-21.7%
20South Carolina29.7-10.1%
21Kentucky29.7-6%
22Wisconsin28.28-9.6%
23Oklahoma28.1-8.8%
24Minnesota27.25-18.2%
25Colorado26.38-15.7%
26Maryland26.02-17%
27Massachusetts24.31-23.6%
28Mississippi22.47-3.9%
29Iowa19.99-7.4%
30Oregon19.16-9.2%
31Arkansas19.12-5.6%
32Utah17.36-4.9%
33Kansas16.87-7.3%
34Nevada15.5-15.4%
35New Mexico15.17-4.4%
36Connecticut13.77-14.6%
37Nebraska12.52-6.6%
38West Virginia11.65-15.2%
39Idaho10.36-2.3%
40Alaska8.08+4.4%
41North Dakota7.91-11.4%
42Montana7.54-1.9%
43Wyoming6.99-5.8%
44South Dakota6.76-1.8%
45Maine6.57-7.8%
46Hawaii6.15-35.3%
47New Hampshire6.06-13%
48Delaware4.94-15.5%
49Rhode Island3.45-15.9%
50Vermont2.74-16%
51District of Columbia1-23.8%

Other periods

About this ranking

Greenhouse gas emissions of a US state allocated to the transportation economic sector.

More on how it is measured
  • Cars, trucks, aircraft, ships, rail and pipelines, including their fuel and the refrigerants in vehicle air conditioning.
  • In million metric tons of CO2 equivalent: carbon dioxide, methane, nitrous oxide and fluorinated gases weighted by their 100-year global warming potentials (IPCC AR5), from the EPA inventory of US emissions by state, which allocates the national inventory to the states with the same methods for every state.
  • Emissions are counted where they occur, so electricity is counted in the state that generates it, not the state that uses it.

The six economic sectors add up to state_ghg_emissions. EPA says these estimates are not official state data: a state's own inventory can differ because it uses other methods, data or scopes. Each annual edition recalculates the whole series back to 1990.

Every value in the ranking comes from the same publisher and the same period, so the states are compared on one definition. Equal values share a rank.

How to cite

U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks by State. EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent. https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Environmental Protection Agency. (2025). EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent (US states by greenhouse gas emissions from transportation (EPA state inventory), 2020) [Data set]. Retrieved October 12, 2026, from https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals

MLA 9

EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent, US states by greenhouse gas emissions from transportation (EPA state inventory), 2020. U.S. Environmental Protection Agency, 23 Apr. 2025, https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals. Invokely, https://invokely.ai/rankings/state-ghg-emissions-transportation/us-states?period=2020. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2025. EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent. US states by greenhouse gas emissions from transportation (EPA state inventory), 2020. Dataset. Accessed October 12, 2026. https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals. Also distributed by Invokely, https://invokely.ai/rankings/state-ghg-emissions-transportation/us-states?period=2020.

Harvard

U.S. Environmental Protection Agency (2025) EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent, US states by greenhouse gas emissions from transportation (EPA state inventory), 2020 [Dataset]. Available at: https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals, via Invokely: https://invokely.ai/rankings/state-ghg-emissions-transportation/us-states?period=2020 (Accessed: 12 October 2026).

BibTeX
@misc{environmental_us_states_by_greenhouse_2020,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent: US states by greenhouse gas emissions from transportation (EPA state inventory), 2020}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/state-ghg-emissions-transportation/us-states?period=2020. Publisher attribution: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks by State. EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent. https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Environmental Protection Agency
TI  - EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent: US states by greenhouse gas emissions from transportation (EPA state inventory), 2020
PY  - 2025
DA  - 2025/04/23
PB  - U.S. Environmental Protection Agency
DB  - Invokely
UR  - https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals
L2  - https://invokely.ai/rankings/state-ghg-emissions-transportation/us-states?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/state-ghg-emissions-transportation/us-states?period=2020.
N1  - Publisher attribution: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks by State. EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent. https://www.epa.gov/ghgemissions/state-ghg-emissions-and-removals. Retrieved 2026-10-12.
ER  -
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Questions

Which state has the highest greenhouse gas emissions from transportation (EPA state inventory)?

Texas, with 185.39 million tonnes of CO2 equivalent in 2020, according to the U.S. Environmental Protection Agency.

Which state has the lowest greenhouse gas emissions from transportation (EPA state inventory)?

District of Columbia, with 1 million tonnes of CO2 equivalent in 2020.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Environmental Protection Agency, EPA greenhouse gas inventory by state: Transportation economic sector, million metric tons of CO2 equivalent. Retrieved 2026-10-12.

US states: more rankings