HOUSTON -

A new study from Rice University shows Houston is the most diverse city, but is still segregated.

"Dramatic growth over the past 20 years has made Houston the most ethnically diverse large metropolitan area in the country and reduced its segregation," the report from Rice University's Kinder Institute for Urban Research and the Hobby Center said.

The report also found Pearland and Missouri City have slightly surpassed Houston as the region's most diverse cities.

The researchers used census data from 1990, 2000 and 2010 to analyze the regions' growth and changes over the past 20 years.