People from the poorest areas can expect to die more than eight years earlier than those in the richest, according to new figures.
And the gap between the richest and poorest parts of England and Wales has grown.
The Office for National Statistics looked at life expectancy at birth and at age 65 in 2012 to 2014.
Boys born in wealthy Kensington and Chelsea can expect to live for more than 83 years.
Yet those born in Blackpool can expect to die before they reach 75.
For newborn girls the area with the highest life expectancy, of 86.7 years, was Chiltern.
Yet girls born in Middlesbrough are likely to die before they reach 80.
Increases in life expectancy have benefited people living in richer areas.
Life expectancy for boys born in Kensington and Chelsea rose by 10.3 years between 1991 to 1993 and 2012 to 2014. For newborn boys in Blackpool it rose by just 3.1 years.
In 1991 to 1993 newborn boys with the highest life expectancy could expect to live 8.3 years longer than those with the lowest.
Now it is 8.6 years.