The IPUMS NHGIS API
IPUMS NHGIS Metadata API
The IPUMS NHGIS Metadata API allows users to explore the NHGIS data collection metadata to browse all of the data we have available within the collection.
IPUMS NHGIS Data Extract API
The IPUMS NHGIS Data Extract API allows users to submit, monitor and retrieve IPUMS NHGIS extracts. As of version 1.0, the API is feature-equivalent with the IPUMS NHGIS web application. That is to say, all features and options available on the web application are also available via API.