2023 Topological Face Polygons for San Joaquin County, California

2023 data from the U.S. Census Bureau's MAF/TIGER Database provides the areal topological primitives for San Joaquin County, CA. Each polygon face includes key geographic area codes for census tabulation areas, enabling the construction of various geographic boundaries.

Use Cases

• Dissolve face geometries on the County Fips Code to build the county boundary polygon.
• Aggregate topological faces using the Census Tract Number to reconstruct census tract geometries for analysis.
• Use the Block Group attribute to assemble demographic or housing data at the block group level for San Joaquin County.
• Join this data with other datasets using the unique topological face identifier (TFID) for spatial analysis.

Strengths

• Data originates from the authoritative U.S. Census Bureau MAF/TIGER Database, ensuring national consistency.
• Polygons are topologically integrated with no overlaps or gaps, supporting accurate spatial operations.
• Includes key geographic codes for 2020 Census and annual survey tabulation areas, providing broad utility.

Limitations

• The dataset is limited to a single county (San Joaquin, CA), requiring combination with other files for broader regional or national analysis.
• Specific row counts, column details, and data volume are unknown, complicating assessment of granularity and processing needs.

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

Freshness

Data reflects the 2023 TIGER/Line release, with metadata last updated in August 2025.

Geography

San Joaquin County, California, United States.