Publication | Closed Access
Building the National Historical Geographic Information System
51
Citations
30
References
2003
Year
EngineeringGeovisualizationGeographic AnalyticsUnited StatesSocial SciencesGeographic Information SystemsData ScienceCensusData IntegrationData ManagementStatisticsCartographyHistorical Population ResearchAggregate Census DataGeographyHistorical Geographic Information SystemsSpatial Information SystemDigital GeographyDemographyGeospatial Data
The National Historical Geographic Information System (NHGIS) is a new project that makes a rich body of aggregate census data accessible within a Geographic Information Systems (GIS) framework for historical population research. The authors are building a database that incorporates all available aggregate census information for the United States from 1790 to 2000, including machine‑readable data and newly transcribed sources, and are creating new census‑tract maps back to 1910, state and county maps back to 1790, and additional maps when feasible. High‑quality boundaries for key statistical areas will enable reconciliation of changes in census geography, and census data, documentation, and boundary files will be freely disseminated through an integrated web‑based data access and mapping system. Keywords: aggregate data, census, Geographic Information Systems (GIS), maps, National Historical Geographic Information System (NHGIS), population.
Abstract The National Historical Geographic Information System (NHGIS) is a new project to make a rich body of aggregate census data accessible within a Geographic Information Systems (GIS) framework for historical population research. The authors are developing a database incorporating all available aggregate census information for the United States between 1790 and 2000, including all surviving machine-readable aggregate data and new data transcribed from printed and manuscript sources. They are also creating new census-tract maps back to 1910, state and county maps back to 1790, and additional maps when feasible. Availability of high-quality boundaries for key statistical areas will permit the reconciliation of changes in census geography. Census data, documentation, and boundary files will be freely disseminated through an integrated Web-based data access and mapping system. Key Words: aggregate datacensusGeographic Information Systems (GIS)mapsNational Historical Geographic Information System (NHGIS)population
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