" 
 :::::I'm not wedded to the neighborhood split  I just thought that ""that was the way it was done"".  The Boston neighborhoods are not very well defined in most cases.  To some extent, that's a matter of people wanting to be in the classier neighborhood, so over time the boundary migrates, with the upscale neighborhood getting larger. It certainly is not as well defined as the Manhattan splits, for example.  Also, while they are well defined by City Hall (in order to issue neighborhood parking permits), even this geo-interested forty year resident can't draw them on a blank map.  I had to look up several as I was going over the classifications, and I'm sure that the average user won't know them.  And, there are the seven above in more than one neighborhood.... 

 :::::Perhaps it would be clearer to do a straight alpha split (A-H) and (I-Z) gives approximately equal halves. That also eliminates problem of sites that are in multiple neighborhhoods.. . . . Jim . . . .   •   "