The files were compiled by Operation Weeting, the force's investigation into allegations of mobile voicemail interception by the newspapers.
They all relate to allegations of offences under the Regulation of Investigatory Powers Act, according to the CPS.
Introduced in 2000, the legislation - known as RIPA - covers the use of surveillance and interception of communications.
None of the identities of the people involved have been disclosed by the CPS, nor the nature of their alleged offences.
A spokesperson for the CPS added: "We are not prepared to discuss the identities of those involved or the alleged offences in any greater detail at this stage as a number of related investigations are ongoing.
"We are unable to give any timescale for charging decisions, except to say that these cases are being considered very carefully and thoroughly, and the decisions will be made as soon as is practicable."