Reagan is largely a PR creation in the first instance, and massively so in recent years.
During his years in office, Reagan was not particularly popular. Gallup polls published recently compare him during office with other presidents. His average ratings during his years in office were below Kennedy, Johnson, Bush I, and Clinton; above Nixon, Ford, Carter. Those are averages during their terms in office.
By 1992 he was ranked just next to Nixon as the most unpopular living ex-president.
Since then there has been an immense PR campaign to convert him into a revered and historic figure, if not semi-divine, and it's doubtless had an effect, radically shifting the rankings. Not on the basis of facts: rather, extremely effective marketing. The current performance is reminiscent of the death of Hirohito and Soviet leaders. One of the more depraved moments of US media. The lying is quite impressive, even by people who surely know better.
Ronald Reagan, the public face of the extremist, arrogant and violent neo-conservative administration of the 1980's