2020 Michigan Correctional facility shapefile from the 2020 PL 94-171 Data Summary File

##Redistricting Data Hub (RDH) Retrieval Date
10/04/21

##Sources
Prison Gerrymandering Project (PPI) 2020 Correctional facility shapefile https://www.prisonersofthecensus.org/data/2020/correctional_facility_shapefile.html
2020 Census Redistricting Data (P.L. 94-171) block level Shapefiles were retrieved from Redistricting Data Hub (RDH) on 10/04/21 from https://redistrictingdatahub.org through the Census Bureau

##Fields
    Field Name                                                                                                   Description
0        block  This 4 digit code is the number for each block. (Note that block numbers are only unique within each tract.)
1        state                                                  This is the 2 digit ANSI code (formerly FIPS) for the state.
2       county                                                                 This is the 3 digit ANSI code for the county.
3      GEOID20                            This 15 digit code is the ANSI code (formerly FIPS) for each block in the country.
4    statename                                                          This is the name of the state containing that block.
5   countyname                                                         This is the name of the county containing that block.
6     totalpop                                   This is the number of people in the block, from the PL94-171 file, Table 1.
7        gqpop                                           Population in group quarters - all, from the PL94-171 file, Table 5
8      instpop                         Population in institutionalized group quarters - all, from the PL94-171 file, Table 5
9      corrpop     Population in institutionalized group quarters - correctional facilities, from the PL94-171 file, Table 5
10      juvpop                    Population in institutionalized group quarters - juvenile, from the PL94-171 file, Table 5
11     nurspop               Population in institutionalized group quarters - nursing homes, from the PL94-171 file, Table 5
12  otherinstp                 Population in other institutionalized group quarters - other, from the PL94-171 file, Table 5
13  noninstpop                     Population in non-institutionalized group quarters - all, from the PL94-171 file, Table 5
14  collegepop           Population in non-institutionalized group quarters - college dorms, from the PL94-171 file, Table 5
15  militarypo       Population in non-institutionalized group quarters - military quarters, from the PL94-171 file, Table 5
16  othernonin                   Population in non-institutionalized group quarters - other, from the PL94-171 file, Table 5
17        lati                                                            This is the latitude of the centroid of the block.
18       longi                                                           This is the longitude of the centroid of the block.
19         URL            URL to that block's entry in the Prison Policy Initiative's database of annotations of facilities.
20  coordinate                                               This is the latitude and longitude of the centroid of the block
21    geometry                                                                             This is the geometry of the block

##Processing
Correctional facility data for Michigan was retrieved with a python script from the Prison Gerrymandering Project (PPI). 
The data is available nationally for the Block Level. 
To extract the data for Michigan the national data was grouped by state and then extracted to a new file for each state. 
The data was merged with the block level shapefile Processing was primarily completed using the pandas and geopandas libraries.

##Additional Notes
For more information on the data see the PPI page at:https://www.prisonersofthecensus.org/data/2020/correctional_facility_shapefile.html
Please direct questions related to processing this dataset to info@redistrictingdatahub.org