McNairy County Topological Face Polygons With Census Geocodes

Topological face polygons from the U.S. Census Bureau's TIGER/Line system for McNairy County, Tennessee. The dataset includes key geographic area codes for all Census-tabulated areas, enabling the construction of geographic area geometries. It is part of a seamless national file with no overlaps or gaps.

Use Cases

• Construct geographic area geometries like census tracts by dissolving face polygons on key geographic area codes such as Census Tract Number.
• Analyze spatial relationships and adjacency for areas like Congressional Districts using the topological face identifier (TFID).
• Integrate demographic data using join keys like County FIPS Code and 5-digit ZIP Code Tabulation Area code.

Strengths

• Data originates from the authoritative U.S. Census Bureau Master Address File/TIGER System (MTS).
• The MTS provides a seamless national file with no overlaps or gaps between geographic parts.
• Includes key geographic codes for all areas the Census Bureau tabulates data for, including the 2020 Census.

Limitations

• The dataset is limited to a single county (McNairy County, TN), requiring combination with other files for broader analysis.
• Specific metrics like row count, file size, and column details are unknown, complicating assessment of scale and structure.
• The description indicates the data is from the 2020 Census, which may not reflect more recent geographic changes.

Provenance

Source

U.S. Census Bureau, Department of Commerce

Collection Method

Extract of selected geographic and cartographic information from the Master Address File/TIGER System (MTS).

Time Range

Includes geographic area codes for the 2020 Census and annual estimates/surveys.

Freshness

Last updated on 2025-12-25, indicating recent maintenance.

Geography

McNairy County, Tennessee, United States.