Voters cast their ballots at Trolley Square in Salt Lake City on Nov. 3, 2020. With 2020 Census data in hand, Utah is in the middle of creating new voting district maps for the next 10 years.

Utah’s urban areas continue to drive growth even though there are technically fewer of them than a decade ago. Nearly 3 million Utahns — around 90% of the state’s population — lived within ...