Only taxi drivers, workers in the hospitality sector and those in the building trade faced higher premiums.
The farming industry was facing some of the most expensive personal car insurance quotes on the market, according to research by comparison site Quotezone.co.uk.
The median quote for the industry comes in at £1,072 for those in roles including farmers, farmworkers, tractor drivers, agricultural consultants and engineers.
And only taxi drivers, workers in the hospitality sector and those in the building and construction industry faced higher premiums than those in agriculture.
Police and community support professionals had the cheapest insurance.
Greg Wilson, founder of Quotezone.co.uk, said insurers used a ‘wide range of variables’ to calculate premiums, and occupation was one of them.
"That's because your occupation has the potential to say something about your risk appetite and your driving style, in much the same way as your age can do,” he said.
"In addition, insurance companies have built up a huge volume of data relating to which occupations are least likely or most likely to make an insurance claim, which can then be used to assess the risk of a new policyholder with a particular occupation making a claim."