Summary statistics for ziphsahrr2014 dataset : by Jean Roth , jroth@nber.org , 14 Mar 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- zipcode | 0 hsanum | 40,996 26714.66 15035.08 1001 53026 hsacity | 0 hsastate | 0 hrrnum | 40,996 257.9528 122.3893 1 457 -------------+--------------------------------------------------------- hrrcity | 0 hrrstate | 0 year | 40,996 2014 0 2014 2014 by Jean Roth , jroth@nber.org , 14 Mar 2018