Rockville ranked seventh overall and fourth among small cities in the U.S. for its ethnic diversity, a new WalletHub study found.

Rockville, Gaithersburg, Germantown and Silver Spring once again occupy the top four spots on WalletHub’s list and four of the top 10 spots among all cities, of any size, in the entire United States.

“The U.S. today is a melting pot of cultures, thanks to increasing ethnic and racial diversification,” WalletHub stated in its Feb. 11 release of the study. “If the trend continues, America will be more colorful than ever by 2045, at which point no single ethnic group will constitute the majority in the U.S. for the first time.”

Gaithersburg took top billing on the small cities’ list. Rockville earned the same ranking among small cities in WalletHub’s 2017, 2018 and 2019 studies. In 2019, Rockville ranked ninth overall in the U.S.

To identify the most ethnically diverse places in America, WalletHub compared more than 500 of the largest U.S. cities across three key metrics.

Rockville ranked 27th overall in ethno-racial diversity, seventh overall in linguistic diversity and 32th overall in birthplace diversity — all improved rankings over 2019.

More than one-third of the city’s 68,298 residents were born outside of the U.S.

The city’s total population is 68,268, according to a 2018 population estimate from the U.S. Census Bureau. Of those, 28.9% are Asian, 15.3% are Hispanic or Latino, and 10.7% are black. More than 45 percent spoke a language other than English at home. Read the complete rankings on WalletHub.