San Francisco County Linear Geographic Features for 2022

U.S. Census Bureau TIGER/Line shapefile provides linear topological primitives for San Francisco County, CA. The All Lines Shapefile contains geometry and attributes for features like roads, railroads, and hydrography, each with a unique TLID identifier. This extract is part of a seamless national database designed to stand alone or be combined.

Use Cases

• Analyze road network connectivity and density using the linear topological primitives and TLID identifiers.
• Map hydrographic features like rivers and streams contained within the All Lines Shapefile.
• Integrate railroad line geometry with separate attribute files for transportation infrastructure studies.
• Combine this county file with others using the seamless MTDB structure to model regional linear networks.

Strengths

• Data originates from the authoritative U.S. Census Bureau Master Address File/TIGER Database (MTDB).
• The MTDB provides a seamless national file with no overlaps or gaps between geographic parts.
• Each linear feature edge has a unique TIGER/Line identifier (TLID) for precise referencing.

Limitations

• Attribute data for linear features is stored in separate relationship files that must be downloaded and joined.
• The dataset is specific to San Francisco County for the year 2022, limiting broader temporal or geographic analysis.
• Sample data and specific record counts are unavailable to assess the volume of features included.

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

2022

Freshness

Data reflects the 2022 TIGER/Line release, with metadata last updated in January 2024.

Geography

San Francisco County, California, United States