The Most Diverse Cities in America in 2026

Ask most people to name the most diverse city in America and they will say New York or Los Angeles. The data points somewhere else. The most racially diverse cities in the country are mid-sized places most Americans have never visited: Tukwila, Washington, a suburb south of Seattle, and Vallejo, California, an old shipyard city on the north edge of San Francisco Bay.

We measure this with the CensusEasy Diversity Score, a 0 to 100 index built on the probability that two residents picked at random belong to different racial or ethnic groups. A score near 100 means almost any two neighbors are likely to come from different backgrounds. A score near 0 means the population is nearly uniform. The full methodology is documented at our methodology page, and you can browse every city on the most diverse cities ranking.

The top of the list

Tukwila scores 97.5, the highest of any city in the country. Vallejo follows at 97.4, then SeaTac, Washington at 97.3, the airport city between Seattle and Tacoma. Suisun City, California and Valley Stream, New York round out the top five, both above 97.

What these places share is that no single group dominates. White, Black, Hispanic, and Asian residents each hold a meaningful share, and the balance among them is close to even. That is rare. Most American cities lean heavily toward one or two groups. A city only reaches the high 90s when the population splits four or five ways with no clear plurality.

The pattern behind the numbers

The most diverse cities are clustered near a few major metros, and the reason is economic. Seattle's southern suburbs, including Tukwila and SeaTac, sit along the airport and warehouse corridor where immigrant communities settled for work in logistics, hospitality, and services. Federal Way, a little further south, also lands in the top fifteen for the same reason.

The Bay Area produces a second cluster. Vallejo and Suisun City sit in the northern part of the region, where housing stayed relatively affordable as San Francisco and the South Bay priced out middle-income families. Oakland, the largest city near the top of the list at over 440,000 residents, scores 96.3 and has been a famously mixed city for generations.

The New York metro contributes the third cluster. Valley Stream sits just over the Queens line on Long Island, and Jersey City, New Jersey, directly across the Hudson from Manhattan, scores 96.2 with more than 300,000 residents. Jersey City is the strongest case that diversity and scale can coexist. It is a real city, not a small suburb, and it still ranks among the most balanced populations in the country.

The Washington suburbs appear too. Germantown, Maryland, a planned community northwest of the capital, scores 96.6, the product of decades of immigration into the region's expanding tech and federal workforce.

Why the big cities rank lower

New York and Los Angeles are extraordinarily diverse in absolute terms, but the diversity score measures balance, not headcount. Both cities have large pluralities, Hispanic residents in Los Angeles and a mix that tilts in specific directions across New York's boroughs, that pull their scores below the most evenly split suburbs. A city of eight million can be less balanced than a suburb of twenty thousand, even though it contains far more people from far more places.

This is also why the ranking surfaces places that rarely make national lists. A small city reaches the top precisely because its population is too evenly divided for any group to dominate. The score rewards balance, and balance is easier to find in a satellite city that grew through several waves of migration at once.

You can see how any city scores, and how its racial composition has shifted over time, on its place page. For the opposite trend, our piece on which cities have become less diverse since 2000 looks at the places moving the other direction, and which race is increasing the most in the United States covers the national picture. To put two cities head to head, use the Compare tool.

Sources

Figures in this article come from the following public datasets, accessed through CensusEasy:

• US Census Bureau, American Community Survey 5-year estimates: census.gov/programs-surveys/acs
• US Census Bureau, Decennial Census (1990 and 2000 summary files): census.gov/programs-surveys/decennial-census.html
• CensusEasy methodology and inflation adjustments: censuseasy.com/methodology