Starting in late September, some customers of NewAlliance Bank, a New Haven-based institution born from the merger of three Connecticut banks earlier this year, will have to travel a little farther to get to a branch.

The bank applied to the state Department of Banking earlier this month to consolidate seven branches in cities east of Hartford, where mergers resulted in a lot of overlapping branches, said spokesman Brian Arsenault.

“Most are within a mile of our other branches,” Arsenault said.

The NewAlliance Bank is the product of the merger of Tolland Bank, The Savings Bank of Manchester and New Haven Savings Bank. Tolland Bank and The Savings Bank of Manchester both had branches in the area.

Despite initial uncertainties about whether some branch employees would be laid off, the bank has found new positions for all the affected employees, Arsenault said. The bank purposefully kept some positions unfilled in anticipation of the consolidation. All the employees except two decided to accept their new positions, he said.

“This consolidation greatly improves the efficiency of our franchise and allows us to keep customer disruption to a minimum, given how close many of these locations are to one another,” said NewAlliance President and Chief Executive Officer Peyton R. Patterson in a prepared statement. “The consolidated locations are being merged into facilities with more service capability and as good or better branch hours.”

The branches closing are located in Vernon, Tolland, South Windsor, Coventry, Enfield, Ellington and Manchester.

NewAlliance is attempting to put some unity in its mish-mash of branches with new signs, Arsenault said. Because the branches belonged to three different banks, there is not a lot of continuity in the design.

“They’re quite a collection,” he said.

The bank has completed the integration of Tolland Bank’s computer systems and will integrate The Savings Bank of Manchester’s computers over Labor Day weekend, he said.