Posted on January 19, 2023 (Updated on July 10, 2025)

1990 US Census Block Boundary File?

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What is a boundary file?

The Boundary files portray the geographic limits used for census dissemination and are available for Provinces and Territories, Census Divisions, Economic Regions, Census Metropolitan Areas and Census Agglomerations, Census Consolidated Subdivisions, Census Subdivisions and Aggregate Dissemination Area.

What are Tiger files?

TIGER/Line files are a digital database of geographic features, such as roads, railroads, rivers, lakes, political boundaries, census statistical boundaries, etc. covering the entire United States.

Which tool includes data for every census block in the United States?

Data.census.gov provides data on population, race, age, education, income, and businesses for the largest and smallest geographic entities including ZIP codes.
 

What is an example of boundary data?

For instance, understanding the income levels of an area’s daytime population (based on the inflow of workers on weekdays, for example) can be an important factor when selecting a location for a new restaurant. Weather information provides another example of the richness of context that boundary data can provide.
 

What are the types of boundary data?

There are three main types of boundaries that represent different types of boundary data:

  • Physical boundary.
  • Political boundary.
  • Cultural boundary.

 

What is a boundary shapefile?

The cartographic boundary files are simplified representations of selected geographic areas from the Census Bureau’s MAF/TIGER geographic database. These boundary files are specifically designed for small scale thematic mapping. The cartographic boundary files are available in shapefile and KML format.
 

Why is boundary data used?

Geographic boundary data are used for analyzing market potential and penetration, sales territory definition, site selection, neighborhood analysis, market and trend analysis, redistricting, environmental and medical research and analysis, historical studies, school districts, postal carrier zone calculations, zip code

What is a boundary dataset?

The Boundary Dataset contains measurements of all international boundary lengths between members of the international system and their changes.