Thanks for the reply.  I have compared 50 addresses with an alternative geocoding site and found there was minimal difference between the lat/long's.  So far so good! ... View more

Thanks to all for the suggestions!   @ballardw Your point about states with straight borders is a great catch... I assume that a straight boundary would just have points at the vertices.   I think drawing a 0.5 radius circle around the address points will work, in conjunction with using PROC GINSIDE to determine if any of those points will fall in a different state.   Thank you everyone for your suggestions!   ... View more

Thank you for the reply!  You are correct - I am using PROC MAPIMPORT to read in shapefiles of the states into SAS.   I have a series of addresses (lats/longs) where I am using PROG GINSIDE to place them into states.  However, if the address is within 0.5mi of a state boundary, I don't want it to be assigned a state.   For example, I have an address at (43.0001,-91.0001) and I need to figure out what state boundaries it is within.  But if this address lat/long is within 0.5mi of a state boundary, I don't want it assigned to a state.     So I need to "clip" the boundaries inwards of the states by 0.5mi, and output a dataset of the boundaries where the boundaries are shrunk by 0.5mi   I think I am using the basic procedures... I have SAS9.4 Enterprise Guide. ... View more