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ipums-microdata-api

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Access harmonized census and survey microdata via the IPUMS API

skills/domains/social-science/ipums-microdata-api/SKILL.md

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# IPUMS Microdata API

## Overview

IPUMS (Integrated Public Use Microdata Series) provides the world's largest collection of harmonized census and survey microdata. Hosted by the University of Minnesota, it covers demographic, health, labor, and geographic data across 100+ countries and 100+ years. The API enables programmatic extract creation, metadata queries, and data retrieval. Free registration required.

## IPUMS Data Collections

| Collection | Coverage | Records |
|-----------|----------|---------|
| IPUMS USA | U.S. Census & ACS (1850-present) | 16B+ person-records |
| IPUMS CPS | Current Population Survey (1962-present) | Labor force data |
| IPUMS International | Census data from 100+ countries | 2B+ person-records |
| IPUMS NHGIS | U.S. geographic/aggregate data | County-level stats |
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