Sgt Longford died on January 24 after battling a rare and aggressive form of cancer since late 2010.

She served as a police officer for 14 years and worked at Liverpool and Cabramatta before she began working at Bowral in 2008.

Sgt Longford and husband Peter Cotton, a police officer based at Picton, have three children, Dean, Jake and two-year-old Emma.

Sgt Cotton said his wife was also step mother to two of his children from a previous relationship.

About 500 people attended the service at St John's Anglican Church in Camden, among those Sgt Longford's colleagues, some wearing plain clothes and others in uniform.

Sgt Cotton said the rain stopped when his wife was brought to the family home before the funeral and the wet weather held off until after the service.

A police guard of honour saluted Sgt Longford as she was taken into the church and Sgt Cotton said it was only when leaving that he realised how many people had come to pay their respects to his wife.

"They lined the road way and it surprised me on the way out because I knew how many people we had left behind (in the church).

"I've done a lot of police funerals in my time and it was one of the biggest I had been to let alone been involved with."

Sgt Cotton said a second service was then held at Forest Lawn Memorial Park in Leppington, where the police guard of honour continued the display respect.

He said Goulburn LAC commander Superintendent Gary Worboys and family friends Ben and Tim Mallott were among those who spoke about Sgt Longford at the service.

Supt Worboys said Sgt Longford's funeral was a fitting tribute to her dedication to her job as a police officer.

He said Sgt Longford would be remembered as an excellent communicator that was positive about her duties, with no task ever too big or small.

"Sgt Longford was the sort of officer that police commanders just want to have around," he said.

"Renee was just as good at chasing and catching criminals as she was comforting victims of crime.

"She will be sadly missed and our thoughts are with her family."

Sgt Cotton said the service was the best the family could have hoped for.

"It was quite humbling and quite fitting.

"I'm very proud that she'd touched the hearts of so many people."