The PSNI is to launch a major recruitment drive this autumn.
Deputy Chief Constable Judith Gillespie said the campaign would target the north west, where some people are still reluctant to join the police.
The Belfast Telegraph revealed in February that the Policing Board's finance committee agreed for the new recruitment drive to go ahead.
Ms Gillespie told the Policing Board she wanted the organisation to be more representative of the ethnic and geographical make-up of the community.
"We know we have an issue with recruiting in the Foyle area. We also know that's an issue in Strabane and to a lesser extent Omagh. Therefore it is quite legitimate for us to target our recruitment campaign towards that area which is under-represented," she said.
In recent years dissident republicans operating in the north west have targeted the security forces.
The PSNI was forced to freeze recruitment over two years ago because of cuts to the policing budget but, with more than 1,000 officers due to reach retirement age over the next three years, trainee officers have to be recruited to retain the current quota of just over 7,000.