Greenest Cities in America (2026)

“Green” living means engaging in cleaner, more sustainable habits in order to preserve the planet as much as possible, and around 58% of Americans believe protecting the environment should be prioritized above economic growth. Clean energy and other “green” practices, such as recycling programs and urban agriculture, help create jobs and benefit both the environment and public health, all of which contribute to America’s bottom line. Recognizing those advantages, cities across the U.S. have increased their sustainability efforts and benefited economically.

To identify the greenest areas of the country, WalletHub compared the 100 largest cities across 28 key “green” indicators. Our data set ranges from greenhouse-gas emissions per capita to the water quality to green job opportunities.

Main Findings

Green Cities in the U.S.

Notes: *No. 1 = Greenest

With the exception of “Total Score,” all of the columns in the table above depict the relative rank of that city, where a rank of 1 represents the best conditions for that metric category.

In-Depth Look at the Greenest Cities

Oakland, CA

Oakland is the greenest city in America, boasting the second-lowest greenhouse gas emissions and the best air quality in the country. In addition to not polluting the air, Oakland also has one of the lowest light pollution levels in the country, allowing residents to better see the night sky.

Oakland is also a great city for going outside and experiencing green spaces, due to the fact that over 12% of the city is designated as parkland, the 30th-highest percentage among the 100 cities in our study. Oakland also has a bike sharing program, along with the 20th-most bicycle lanes and paths per capita, making it easy to travel without burning gas and to get in some extra exercise.

To top things off, Oakland makes locally-grown produce easily accessible. It has a high number of community garden sites and farmers’ markets per capita. And for people who want to work in an environmentally-sustainable industry, Oakland has the 24th-most green job openings per capita.

San Jose, CA

San Jose is the greenest city in America, in part because it has the fifth-highest number of solar panel installations per capita. Over 50% of the city’s electricity comes from renewable sources, the fifth-highest percentage in the country.

One big positive impact of San Jose’s green practices is that it has the fourth-lowest Urban Heat Island Effect Index in the country. What that means is there’s only a relatively small amount of difference between the average temperature in the city and its less-developed immediate surroundings. In other words, the use of green energy in San Jose helps keep it from being an excessively hot city environment.

San Jose has plenty of other environmentally-conscious policies worth noting. For example, it bans plastic bags, has a bike-sharing program, and has numerous local initiatives that promote the use of green energy.

San Francisco, CA

San Francisco is the third-greenest city in America, in part because residents often grow their own food or buy it locally. San Francisco leads the country when it comes to the number of Community Supported Agriculture groups (CSAs) and community garden sites per capita. It also has the fourth-most farmers’ markets per capita.

In addition, San Francisco derives over 50% of its energy from renewable sources, the fifth-highest percentage in the country. It also has the 13th-most alternative-fuel stations for vehicles and the 20th-most solar panel installations per capita.

Residents of San Francisco are good at conserving water, with the country’s ninth-lowest daily water consumption per capita. People also conserve gas by carpooling, as the city has the fourth-lowest percentage of commuters who drive alone to work.

The methodology can be found on the full version of the article on WalletHub.