Topological Face Polygons for Dallas County with 2023 Census Geocodes

Topological Faces are the areal primitives that form the U.S. Census Bureau's seamless national geographic database for Dallas County, TX. This shapefile contains polygon geometries with unique TFID identifiers and key geographic area codes used for building 2020 Census and survey tabulation areas. The data is extracted from the Master Address File/Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database.

Use Cases

• Dissolve face geometries on key geographic area codes like County Fips Code or Census Tract Number to reconstruct official Census Bureau tabulation boundaries.
• Analyze the topological relationships between faces using unique TFID values to ensure no overlaps or gaps in spatial coverage for Dallas County.
• Join this face-level data with other datasets using attributes such as 5 digit zip code tabulation area code or Block Group for demographic or economic analysis.

Strengths

• Data originates from the authoritative U.S. Census Bureau MAF/TIGER Database, ensuring national consistency and accuracy.
• The topological face structure guarantees a seamless national file with no overlaps or gaps between geographic parts.
• Includes key geographic codes for all Census tabulation areas, enabling the reconstruction of various geographic hierarchies.

Limitations

• The dataset is specific to Dallas County, TX, limiting analyses requiring broader regional or national coverage without combining other files.
• Unknown row count and file size make it difficult to assess the data's granularity and processing requirements beforehand.

Provenance

Source

U.S. Census Bureau, Department of Commerce

Collection Method

Extracted from the Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database.

Time Range

2023 vintage, with codes for 2020 Census and annual surveys.

Freshness

Updated in August 2025, containing codes relevant for the 2020 Census and subsequent annual estimates.

Geography

Dallas County, Texas, United States.