A contributing factor in the decrease in drug crime had been the police crackdown on cannabis in the area.
"There is a focus on high-end suppliers and dealers, instead of the low-end stuff."
General crime such as family violence was also down.
Ms McKenzie said the police were working on a more robust set of family violence statistics, which included factors such as profiles of relationships between victims and offenders, to give a more detailed story of family violence in the area.
There has been a 16.7 per cent rise in reported sexual assaults in Wairarapa, but Ms McKenzie said that this was consistent with nationwide statistics.
She said the increase was due to sexual assaults being under- reported in the past.
During the past few years, she said victims had felt more comfortable reporting assaults to police.
"It doesn't matter if it [the assault] was last week or last decade, we want people to report it."
Ms McKenzie said the police were on track with continuing to cut crime in the district.
"We are pleased with a 20 per cent decrease over two years, that means 20 per cent fewer victims. It's a very pleasing result."