Downtown Brooklyn, the civic and commercial center of the borough, is becoming a full-fledged residential community with its own identity, if not attitude.

“In five years, people will be calling it DoBro,” said Paul Travis, a developer who has worked on projects in the area for nearly 30 years.

In the last decade, 6,758 apartments (roughly two-thirds rentals and one-third condominiums) have been built there, and 5,997 are under construction, according to a market report released in September by the Downtown Brooklyn Partnership, a nonprofit development corporation. Many are in luxury high-rises that attract young professionals like Elisabeth Conroy, 30, an arts lawyer who works in Manhattan. In August, she and her husband, who works in finance, rented a 39th-floor one-bedroom for $3,400 a month in the new 440-unit City Tower.

“I’d been living in an old building in the West Village, and I was tired of things not working,” she said.