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All sources · source collection

IPUMS USA: Integrated Public Use Microdata Series

IPUMS, University of Minnesota · 2024

Population measured

Decennial census respondents (sample or full count, depending on year) + ACS 2001-present

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Source notes & limitations

Harmonized census microdata 1850-2020 + ACS. Tier B: statistics computed by this project from microdata. COMPLIANCE: See docs/ipums-compliance.md. IPUMS USA Sample data: may publish subsets for journal requirements; contact IPUMS for other redistribution. IPUMS USA Full Count data (1850-1950): WILL NOT BE REPUBLISHED. Vitrine publishes only derived aggregate statistics (medians, percentages), never raw microdata. Raw IPUMS extracts live in gitignored samples/ and are never committed. PREFERRED CITATION: Steven Ruggles, Sarah Flood, Matthew Sobek, Daniel Backman, Grace Cooper, Julia A. Rivera Drew, Stephanie Richards, Renae Rodgers, Jonathan Schroeder, and Kari C.W. Williams. IPUMS USA: Version 16.0 [dataset]. Minneapolis, MN: IPUMS, 2025. https://doi.org/10.18128/D010.V16.0. Add publication to IPUMS bibliography at https://www.ipums.org/bibliography.

Where this source appears

4 records across 1 decades and countries. Documented gaps are included; a source cited for a gap does not establish a value.

0 of 4 records have a current source audit. A transcription check reads a declared numeric field from a pinned local source file; a calculation replay reads its operands and applies the declared method and rounding rule. A source audit does not independently validate the source or every claim in a record. The date is the last successful local audit; the build checks that its bindings still match.

US · 1950s