The study, from Bitz.io, ranked every UK county and nation by the number of high-value winners (every prize of £1,000 or more) they returned for every 100,000 residents across the last 12 monthly draws.
How Devon performed
Devon ranked 6th of 47 UK counties and nations, returning 513 high-value Premium Bonds winners for every 100,000 residents.
Across the 12 monthly draws, 6,430 winning Bonds in the county shared prizes worth £18,860,000, an average of about £2,933 for each winning Bond.
That places Devon just below East Sussex (514 per 100,000 residents) and just above Suffolk (487) in the national ranking.
Devon sits in the South West region, which ranked 1st of the 12 UK regions and nations for winners per head.
Nationally, Dorset topped the table on 590 winners per 100,000 residents, while Greater London recorded the most winners in raw terms (23,263) but ranked 36th once population is taken into account.