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Historical Context and Creation of the IPUMS Ancestry Full Count Population Census Data 1900-1930
Matt A Nelson1, Diana L Magnuson1, Matthew Sobek1
1University of Minnesota.
Historical Methods
|August 29, 2025
Summary
IPUMS has released full count U.S. census data from 1900-1930. This valuable resource aids research into demographic, health, and socioeconomic questions, despite historical and modern data quality considerations.
Area of Science:
- Demography
- Historical Sociology
- Data Science
Background:
- The U.S. Census Bureau conducted historical enumeration.
- Digitization and IPUMS processing transformed raw data.
- Evolving institutional contexts influenced data production.
Purpose of the Study:
- To document the history and processes behind the IPUMS full count census data (1900-1930).
- To assess data quality, identify sources of error, and describe data processing methods.
- To highlight implications for researchers using this historical dataset.
Main Methods:
- Utilized historical census enumeration records.
- Employed digitization techniques for data conversion.
- Applied IPUMS processing methods for data refinement and quality assessment.
Main Results:
- Identified data quality issues stemming from historical Census choices and modern transcription errors.
- Developed specific methodologies to assess and correct large-scale historical datasets.
- Documented the implications of data creation processes on research potential.
Conclusions:
- The IPUMS full count data (1900-1930) is a powerful resource for demographic, health, and socioeconomic research.
- Researchers must critically evaluate the data creation process for their specific research questions.
- Understanding data limitations is crucial for accurate interpretation and valid research outcomes.
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