Wiltshire Police recorded 290 metal theft offences in 2019-20, Office for National Statistics data shows.
Of those, 121 were infrastructure-related, which includes the stripping of metal such as roofing lead from buildings, taking electricity or railway cables, or stealing vehicle parts.
The rest were non-infrastructure related, which could involve stealing scrap metal or war memorial plaques.
Around 15,900 metal theft offences were recorded across England and Wales in 2019-20.
This was down slightly on the previous year, although Greater Manchester Police did not submit figures, which could account for the drop.
The LGA said a decline was partly due to the introduction of the Scrap Metal Dealers Act in 2013.