Colorado Census 2020 Redistricting Blocks

This layer contains block level 2020 Decennial Census redistricting data as reported by the U.S. Census Bureau for the state of Colorado. The attributes come from the 2020 Public Law 94-171 (P.L. 94-171) tables. Data download date: August 12, 2021 Census tables: P1, P2, P3, P4, H1, P5, Header Downloaded from: [Census FTP site] Processing Notes: * Data was downloaded from the U.S. Census Bureau FTP site, imported into SAS format and joined to the 2020 TIGER boundaries. Boundaries are sourced from the [2020 TIGER/Line Geodatabases]. Boundaries have been projected into Web Mercator and each attribute has been given a clear descriptive alias name. No alterations have been made to the vertices of the data. * Each attribute maintains it's specified name from Census, but also has a descriptive alias name and long description derived from the technical documentation provided by the Census. * For a detailed list of the attributes contained in this layer, view the Data tab and select "Fields". * The following alterations have been made to the tabular data: * * Joined all tables to create one wide attribute table: * * P1 - Race * P2 - Hispanic or Latino, and not Hispanic or Latino by Race * P3 - Race for the Population 18 Years and Over * P4 - Hispanic or Latino, and not Hispanic or Latino by Race for the Population 18 Years and Over * H1 - Occupancy Status (Housing) * P5 - Group Quarters Population by Group Quarters Type (correctional institutions, juvenile facilities, nursing facilities/skilled nursing, college/university student housing, military quarters, etc.) * Header * After joining, dropped fields: FILEID, STUSAB, CHARITER, CIFSN, LOGRECNO, GEOVAR, GEOCOMP, LSADC. * GEOCOMP was renamed to GEOID and moved be the first column in the table, the original GEOID was dropped. * Placeholder fields for future legislative districts have been dropped: CD118, CD119, CD120, CD121, SLDU22, SLDU24, SLDU26, SLDU28, SLDL22, SLDL24 SLDL26, SLDL28. * P0020001 was dropped, as it is duplicative of P0010001. Similarly, P0040001 was dropped, as it is duplicative of P0030001. * In addition to calculated fields, County_Name and State_Name were added. * The following calculated fields have been added (see long field descriptions in the Data tab for formulas used): * * PCT_P0030001: Percent of Population 18 Years and Over * PCT_P0020002: Percent Hispanic or Latino * PCT_P0020005: Percent White alone, not Hispanic or Latino * PCT_P0020006: Percent Black or African American alone, not Hispanic or Latino * PCT_P0020007: Percent American Indian and Alaska Native alone, not Hispanic or Latino * PCT_P0020008: Percent Asian alone, Not Hispanic or Latino * PCT_P0020009: Percent Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino * PCT_P0020010: Percent Some Other Race alone, not Hispanic or Latino * PCT_P0020011: Percent Population of Two or More Races, not Hispanic or Latino * PCT_H0010002: Percent of Housing Units that are Occupied * PCT_H0010003: Percent of Housing Units that are Vacant * Please note these percentages might look strange at the individual block level, since this data has been protected using differential privacy.* *To protect the privacy and confidentiality of respondents, data has been protected using [differential privacy techniques] by the U.S. Census Bureau. This means that some individual blocks will have values that are inconsistent or improbable. However, when aggregated up, these issues become minimized. The pop-up on this layer uses Arcade to display aggregated values for the surrounding area rather than values for the block itself. Additional links: * [U.S. Census Bureau] * [U.S. Census Bureau Decennial Census] * [About the 2020 Census] * [2020 Census] * [2020 Census data quality] * [Decennial Census P.L. 94-171 Redistricting Data Program]