Ingham County Topological Faces with 2020 Census Geocodes

2020 Census and annual survey data provides polygon features for Ingham County, Michigan. This shapefile contains topological primitives (faces) that can be dissolved to build geometries for various geographic areas. The U.S. Census Bureau created this extract from its Master Address File / Topologically Integrated Geographic Encoding and Referencing (MTS) system.

Use Cases

• Dissolve face geometries using Congressional District Code to create legislative district boundaries.
• Analyze the distribution of Census Tract Number areas by dissolving faces on that attribute.
• Build geographic area geometries for 5 digit zip code tabulation area code by aggregating topological faces.
• Examine the relationship between County Fips Code and other nested geographic codes like Block Group within the face data.

Strengths

• Data is part of the Census Bureau's national MTS, designed as a seamless file with no overlaps or gaps.
• Each topological face includes key geographic area codes for all areas used in 2020 Census tabulation.
• Faces have a unique topological face identifier (TFID) for precise reference and linking.

Limitations

• Sample size and specific row count for Ingham County are unknown.
• The dataset is a single county extract; national analysis requires combining many standalone files.
• Data schema and available columns beyond core geocodes are not detailed in the input.

Provenance

Source

U.S. Census Bureau, Department of Commerce

Collection Method

Extract from the Master Address File / Topologically Integrated Geographic Encoding and Referencing (MTS) System.

Time Range

Includes geocodes for the 2020 Census and annual estimates/surveys.

Freshness

Updated as of December 2025, containing codes for the 2020 Census and annual estimates.

Geography

Ingham County, Michigan, United States.