Union's pre-poll push for more cops in Western Sydney

The police union is calling for 250 more officers for Western Sydney to avoid longer wait times. (Mick Tsikas/AAP PHOTOS) (AAP)

Waiting longer for police to arrive could be a more regular occurrence in western Sydney without an injection of 250 officers into the growing region, the police union says.

Each officer in Western Sydney had to cover more residents than other parts of the state, meaning they were slower to respond, the Police Association of NSW said on Monday.