Mods - Feel free to move this if you think it should be elsewhere -I considered in the tech forum but thought more eyes that might be familiar with NSP would see it here
Somebody in our Community & Home Improvement department came to us for a map with varying shades representing what type of NSP grants particular tracts or block groups might qualify for. They provided us with a list of FIPS codes and the city, village, or township that each individual FIPS code is physically located in. The problem is that these FIPS codes all have 23 characters and we have never seen them this long.
Here is one as an example: 261256204062020121500U3 This particular geography is somewhere within the Village of Oxford, MI for reference.
It's about the last 11 characters or so that we are trying to figure out what it represents. I know that the U3 has to do with whether or not the geography is urban or not but most of the rest of that last part is a mystery.
We want to make sure that the map we provide has the correct locations shaded. Any idea what these extra characters are? Could it be a particular block or block face? Is the entire string maybe not a FIPS code at all but possibly some other federal designator like a OMB code? The HUD and Census sites are not much help.