However , the mid-2007 population estimate was 530,300 , representing an increase of about 17,000 residents since 2001 .
The population of Sheffield peaked in 1951 at 577,050 , and has since declined steadily .
The mid-2007 population estimate was 530,300 , representing an increase of about 17,000 residents since 2001 .
The population of Sheffield peaked in 1951 at 577,050 , and has since declined steadily .