Ah, rural Chicago addresses. Kane and DuPage counties use an arcane system based on the number of miles you are from State & Madison in Chicago. In this case, you in the 16th mile west of State. Within a given mile, addresses increase from 000 to 999, inclusive.
What's truly maddening is that this is only for unincorporated areas, and a few incorporated municipalities that never created their own grids, so wild jumps like you describe usually involve a village/city limit. I happen to live in Kane County, so I'm used to this weirdness by now. -- Kristian M Zoerhoff On Apr 8, 2011 7:48 PM, "Alan Mintz" <[email protected]> wrote: > In Burr Ridge, IL: > http://www.openstreetmap.org/?lat=41.7504&lon=-87.92916&zoom=16&layers=M > > I-55 runs approximately E/W and there are frontage roads on either side of > it, apparently named North Frontage Road and South Frontage Road. > > Along them, there are businesses with addresses like "16W561 South Frontage > Rd" and "601 South Frontage Road" (on the next block). If you feed the > 16W561 address to http://zip4.usps.com/zip4/welcome.jsp, it confirms it is > deliverable*. If you leave off the 16W prefix, it gives the same error that > it gives for addresses where it does not know of that particular address, > but it does fall within an acceptable range for that street. > > Perhaps conversely, it accepts "601 South Frontage Road" as deliverable, > but if you give it 16W601... instead, it converts it to 601 and confirms it > is deliverable. This conversion is normally seen where there are naming > discrepancies for a street (like St. vs. Ave., or during the transition > time of an old name to a new name). > > Any clue what these inconsistent 16W prefixes are? It's not a PLSS > designation because the area is around T38N/R11E. > > > *"deliverable" means it does not give an error, which, in my experience, > means it is a valid address point in their database. > > > > -- > Alan Mintz <[email protected]> > > > _______________________________________________ > Talk-us mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-us
_______________________________________________ Talk-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-us
