https://communities.sas.com/t5/SAS-Procedures/Convert-Lat-Long-to-Census-Tract/m-p/837174#M82117 <P>The only that comes to my mind is <STRONG>if</STRONG> you have a map data set of census tracts that have boundary values of the map polygons in the same units as your data then Proc GINSIDE might work.</P> <P>Not sure if faster though.</P> <P>&nbsp;</P> <P>&nbsp;</P> Thu, 06 Oct 2022 14:37:40 GMT ballardw 2022-10-06T14:37:40Z https://communities.sas.com/t5/SAS-Procedures/Convert-Lat-Long-to-Census-Tract/m-p/837170#M82116 <P>My dataset already has been geocoded but it is missing census tract information. Is there a way in SAS to identify the corresponding census tracts to the existing lat/longs without running the whole dataset through proc geocode? The dataset has about 15 million observations so to re-geocode it will take significant time. I am trying to avoid using the following piece of code due to the time it will take for this size of dataset.</P><PRE><CODE class="">Proc geocode method=street data=child_clean out=georesults lookupstreet=lookup.usm attribute_var=(tract); run;</CODE></PRE><P>Thank you for your help!&nbsp;</P> Thu, 06 Oct 2022 14:07:19 GMT https://communities.sas.com/t5/SAS-Procedures/Convert-Lat-Long-to-Census-Tract/m-p/837170#M82116 OlsabeckT29 2022-10-06T14:07:19Z https://communities.sas.com/t5/SAS-Procedures/Convert-Lat-Long-to-Census-Tract/m-p/837174#M82117 <P>The only that comes to my mind is <STRONG>if</STRONG> you have a map data set of census tracts that have boundary values of the map polygons in the same units as your data then Proc GINSIDE might work.</P> <P>Not sure if faster though.</P> <P>&nbsp;</P> <P>&nbsp;</P> Thu, 06 Oct 2022 14:37:40 GMT https://communities.sas.com/t5/SAS-Procedures/Convert-Lat-Long-to-Census-Tract/m-p/837174#M82117 ballardw 2022-10-06T14:37:40Z