Couples without kids and single-person households are the new norm in the heart of Brisbane.

The trend has been revealed in a new study on population change in inner Brisbane from 1996 and projected to 2031.

The study was released today, as the Queensland government convenes a summit on managing the state's growth.

It found inner Brisbane is set for considerable growth and will likely resemble the demographic makeup of inner Sydney and Melbourne over time.

"We need to learn from their experiences to ensure that Brisbane remains a better place to live," Treasurer Andrew Fraser said in a statement.