It was founded in 1855 as the Daily Post by former Liverpool Chief Constable Michael Whitty, who had campaigned for the abolition of stamp duty on newspapers, promising to publish a newspaper that cost just 1d once the duty was lifted. It became the Liverpool Daily Post in 1879 In 1904 it absorbed its older rival the Liverpool Mercury (founded 1811), which it had successfully undercut, and retained a mention of the rival newspaper in its masthead until 1935.
In 1955 it added a Welsh edition, which went on to become simply the Daily Post when it went its own semi-separate way in 1978.
It was originally a broadsheet, but relaunched in the early 1980s as a tabloid in response to the economic hardships Liverpool was suffering at the time. The following year Liverpool Daily Post & Echo Ltd became part of a new parent company, Trinity Holdings International Ltd, which merged with Mirror Group Newspapers in 1999 to become Trinity Mirror.
It was the sister paper of the Liverpool Echo.
It used to be published every day except Sunday, but was published on Monday to Friday only after the last Saturday edition appeared on 31 January 2009.
In January 2012 Trinity Mirror switched the Post to weekly publication from the beginning of the new year, replicating a switch already made two years earlier with the Birmingham Post. The first issue of the Post as a weekly appeared on 19 January 2012. However, the websites still retained the liverpooldailypost.co.uk domain name.
On 10 December 2013 Trinity Mirror announced that The Liverpool Post would cease publication after the 19 December issue, after 158 years in print.