I am interested in downloading an extract of the 2009-2011 ACS that only includes individuals living in metropolitan areas between the ages of 25-34. Are the sample weights in the data extract adjusted accordingly, or do I need to adjust the sample weights myself to account for dropping so many cases? If so, how do you manually adjust the sample weights?
Previously, I downloaded a full extract of the 2009-2011 ACS and then dropped individuals living in metropolitan areas who were not aged 25-34. This way I could run tabulations and regressions much faster. But would using the orginal sample weights produce means and tabulations (e.g. % unemployed, % white, etc.) that are inaccurate because the inverse probability of selection is different in the smaller data set?