The latest figures show that 222 homeless people died over the past four years, according to statistics from the Dublin Regional Homeless Executive (DHRE).
They show that deaths decreased from 65 in 2016 to 34 in 2019 although the total number of homeless adults in Dublin has increased by around 43% in that period.
The DHRE said the figures are still being processed so are classed as "unverified".
They record people in emergency accommodation or rough sleeping whose deaths were notified by service providers to the DRHE.
However the actual deaths happened in hospital and other locations as well as in emergency accommodation and the cause of the death is not given.
A previous study of 343 deaths of homeless people over the five years from 2011 to 2015 found that drugs or alcohol were implicated in 57% of deaths.
It found that 51% died in hospital with 30% in emergency accommodation.
The number who died outdoors was 8.4%, a figure low by international standards according to the study's authors Dr Jo-Hanna Ivers and Professor Joe Barry. The rest of the deaths occurred in private residences, hospices and prison.
It found that homeless people had a mortality rate between three times to ten times that of the general population depending on the year and gender of the deceased.
The age of death was also young with an average age of 42 years and 37 years for women.