Los Angeles County Topological Face Polygons with Census Geocodes

2023 TIGER/Line shapefile contains polygon primitives for constructing all Census geographic areas in Los Angeles County. Each face includes unique identifiers and key geographic area codes for 2020 Census and annual surveys. The data is extracted from the seamless national Master Address File / TIGologically Integrated Geographic Encoding and Referencing Database.

Use Cases

• Construct Census tract geometries by dissolving face polygons on the Census Tract Number attribute.
• Analyze spatial relationships between County Subdivision Fips Code and Block Group boundaries using topological face primitives.
• Map 5 digit zip code tabulation area code boundaries by aggregating face geometries based on ZIP code attributes.
• Study the distribution of Public Use Microdata Area Codelandwater Flag across the county's topological faces.

Strengths

• Data is extracted from the U.S. Census Bureau's authoritative national Master Address File / TIGER Database.
• Each topological face includes key geographic area codes for all Census tabulation areas, enabling flexible geographic construction.
• The shapefile is part of a seamless national file with no overlaps or gaps between parts.

Limitations

• Specific row count, column count, and file size are unknown from the provided input.
• Data is limited to Los Angeles County, CA, and does not provide national coverage in this single file.
• The description does not specify the license terms or any potential usage restrictions.

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 and was last updated on the platform in August 2025.

Geography

Los Angeles County, California, United States