This version of geocorr (geocorr14) will be seen by most users as an alternative/successor to the previous
geocorr12 application, which was the current version
throughout most of 2013, 2014 and the first 9 months of 2015. The difference between 2012 and 2014 versions is primarily
the addition of later versions of existing geocodes.
The related links for the application will not be displayed at the top when the page is loaded. There is a
Display Related Links option that can be clicked on to make the links appear (with a Hide links option that can be
used to make them disappear again.)
New Geographic Codes
We have new 2014 codes for county, county subdivision (aka MCD, towns in New England, etc.), and place (city). These are in addition to the original 2010 values which are still there. Note that there is only a single county change since
2010, that occuring in Virginia where the previous Bedford independent city became part of Beford county.
We now provide 3 sets of metro area codes (CBSA, CBSA type, Metro Division and Combined Statistical Area).
Where the previous (geocorr12) version provided access only to the then-current 2013 values, we now provide access to
2010, 2013 and 2015 values. These reflect all possible values since 2010 since there have been only two updates
since 2010 - those released in February of 2013 and those released in July, 2015.
We have updated 2014 school districts (for the entire country).
We have created two new geocodes related to school districts (2010 and 2014). These are the "Best" school district
and Best School District Type. The Best school district is particularly useful in states where there is one and only
one school district type (unified, elementary, secondary) assigned to any area. In Missouri, for example, there are
unified and elementary districts only (no secondary) and these are mutually exclusive geographies. The best code is
assigned as the unified district code if not blank; if no unified code then the elementary district code is assigned as the "best" code; and if both unified and elementary are blank then the secondary district code is assigned. The best type is a 1-character code with a value of "U", "E" or "S" to indicate which type of district was assgned as best.
New 114th Congressional District and the latest state legislative district geocodes have been added. Very little change in these, actually.
In the Missouri-only section we have added current (2015) library districts. The codes have been modified to conform
to the standard codes assigned by the Institue of Museum and Library services. We have added some 3-chacter suffixes
to create codes for some of these "districts" which are really subdisticts (often county portions).
New 2014 Population as Weight Variable
Geocorr12 offered a 2012 population estimate as a weight variable choice, and that is now replace in this version
with a 2014 estimate. For now this is the same county-population based estimate where we simply apply a
county-level population growth factor. We are hoping that we may be able to get access to some smaller area estimates
(at census tract level) in order to make this weight factor more reliable for smaller areas.
Access to MABLE Data Via Uexplore/Dexter
Power users who may occasionally prefer to access the block-level data in the new mable12 database can do so using Uexplore/Dexter to access the
mable14 data directory. Here you will also find a sasfmats subdirectory containing key SAS format codes with the codes and names for several key geographic units: county, county subdivision (town), place, puma (named for the first time this decade), school and urbanized area/cluster.