Avon and Somerset Police said there were 393 reported crimes during this year's festival compared to 445 in 2009 and 483 in 2008.
There were 230 thefts from tents during the festival, which was the biggest type of crime, followed by drug offences.
There were 22 reported personal thefts this year which is down from 61 last year.
Police said that more than 170,000 people, including visitors and workers, attended this year's event and an estimated 99.7% of them were not victims of crime.
In total 117 people were arrested during the festival.
Superintendent Ian Smith said: "Every year we work closely with Glastonbury Festivals Limited (GFL) as well as our other partner agencies to ensure that the festival remains a safe environment and that crime remains low.
"Once the dust settles on the festival site, planning will once again get under way for Glastonbury 2011, with the aim of making the festival even safer."
Officers on bike, horse-back and foot handed out free phone and wallet lanyards and torches, along with safety advice.