Lauderdale County TN Topological Face Polygons With 2020 Census Geocodes

Topological face polygons from the U.S. Census Bureau's 2020 TIGER/Line database contain key geographic area codes for all Census-tabulated areas. Each polygon face has a unique topological face identifier (TFID) and can be combined with other shapefiles to build seamless national coverage. The data is designed to enable the construction of geographic area geometries by dissolving faces on specific codes.

Use Cases

• Dissolve face geometries on the Congressional District Code to build legislative district boundaries for redistricting analysis.
• Aggregate polygon attributes using the County Fips Code and Census Tract Number for demographic data integration at the tract level.
• Build geographic area geometries for 5 digit zip code tabulation area code by dissolving topological faces on the ZCTA attribute.
• Analyze the relationship between Block Group definitions and underlying topological face primitives using the unique TFID.

Strengths

• Data originates from the U.S. Census Bureau's authoritative Master Address File/TIGER Database (MTDB), ensuring national topological consistency.
• Each topological face includes key geographic area codes for all areas used in 2020 Census tabulation and annual surveys.
• Shapefiles are designed to stand alone for a single county or be combined to create seamless national coverage without overlaps or gaps.

Limitations

• The dataset is specific to a single county (Lauderdale County, TN), limiting broader geographic analysis without combining other files.
• Sample data and specific row/column counts are unavailable, making initial assessment of data volume and structure difficult.
• The provided description is highly technical, requiring significant GIS and Census data expertise for effective use.

Provenance

Source

U.S. Census Bureau, Department of Commerce

Collection Method

Extract of selected geographic and cartographic information from the Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database.

Time Range

2020

Freshness

Based on the 2020 Census, with a platform record last updated in January 2024.

Geography

Lauderdale County, Tennessee, United States