Iowa Voting District Boundaries for 2020 Census

2020 Census data provides voting district (VTD) boundaries for the state of Iowa. This dataset is an extract from the U.S. Census Bureau's MAF/TIGER Database, representing a seamless national file. It includes geographic and cartographic information for precincts, wards, and election districts.

Use Cases

• Analyze voting district (VTD) boundary changes for redistricting analysis in Iowa.
• Map precinct-level geographic data using the unique 1- to 6-character alphanumeric census codes assigned per county.
• Combine this Iowa shapefile with other state files from the TIGER/Line series to create a national map of VTDs.

Strengths

• Data originates from the authoritative U.S. Census Bureau MAF/TIGER Database, ensuring national topological consistency.
• Boundaries are provided for the 2020 Census, reflecting the most recent decennial geographic framework.
• The dataset is part of a national series where shapefiles are designed to stand alone or be combined for full coverage.

Limitations

• Voting district coverage is not complete for all states; Montana and Oregon lack complete VTD coverage in the 2020 Census.
• Kentucky and Rhode Island did not provide VTD boundaries, so no data exists for these states in related 2020 products.
• The dataset is a snapshot from the 2020 Census and may not reflect subsequent boundary changes or annexations.

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

2020

Freshness

Data reflects the 2020 Census. The record was last updated in November 2022.

Geography

State of Iowa, United States.