Berry Street Northern Family and Domestic Violence Service, which takes in seven municipalities including Hume, says it's receiving, on average, 360 police referrals a month to help victims.

The agency's Felicity Rorke said a number of referrals were from Sunbury police.

Police also refer people to the Sunbury Community Health Centre.

"Overall [across the seven municipalities], we've seen an increase of police referrals of more than 50 per cent [in the five months since August last year]," Ms Rorke said.

"We were, on average, receiving 200 referrals a month and now it's over 360. I don't know whether we've reached the peak ... I think we probably haven't."

She said there was an increase in violence reports during the Christmas period when people were under stress from various factors.

Ms Rorke said Berry Street provided services to support family violence victims.

"We're very proactive and work with police and the community to get a better response and attention [to referrals].

"In Hume, we've started a 'Hume strengthening risk management project', which involves agencies such as police, hospitals, Centrelink and schools working together to respond to high-risk situations."

Hume family violence adviser Sergeant Sharon Ryan said police had received a similar number of reports in the Sunbury area as compared to the previous year.

"We had a fairly consistent number of reports between January and May, before we saw a drop over the winter months.

"Since about September, we've seen that figure go back to what it was previously. November through to January are our busiest months."

Sergeant Ryan said it was good to see many people reporting family violence incidents.

"We know family violence is happening and we encourage people to report it if a crime or a threat is involved."

For help, contact Berry Street Northern Family and Domestic Violence Service, 94504700.