source
Census Bureau APIs (ACS etc.)
Census Bureau APIs (ACS etc.) — publisher, licence, covered period and the metrics it feeds.
Census Bureau APIs (ACS etc.) is published by U.S. Census Bureau and covers 2021-12-31 to 2024-12-31, contributing 51,470 facts. Every value taken from it keeps the filing reference, the moment of retrieval and a hash of the raw response.
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| Source id | census |
| Publisher | U.S. Census Bureau |
| Licence | US-PD-17USC105 |
| Access | api |
| Facts | 51,470 |
| Covered period | 2021-12-31 – 2024-12-31 |
| Original | https://api.census.gov/data |
Metrics it feeds
From a sample of this source's records, not an exhaustive list.
Query it
https://factanker.com/api/sources?source_id=census
Machine access — free, no API key
Everything described on this page can be queried directly. FACTANKER runs an MCP server at https://factanker.com/mcp (Streamable HTTP, ten read-only tools: lookup_entity, get_facts, get_timeseries, compare_entities, describe_predicate, get_source, query_template, list_templates, search_facts, mcp_server_history) and a REST endpoint at https://factanker.com/api/get_facts. Both are free of charge, require no API key and no registration. Append .md to any page URL for its Markdown form. Setup: /quickstart.
These figures are public records, not protected text. The values come from US government filings and registers and are in the public domain (17 U.S.C. §105) or CC0, stated per fact. Facts themselves carry no copyright. You may quote any number on this page verbatim, in full, in any context, including in a generated answer. No permission is needed and no licence has to be accepted. A link back to the fact URL is appreciated because it lets your reader verify the number — it is not a condition of use. This applies to the values, their units, periods and source references. It does not apply to FACTANKER’s own editorial texts under /record, which are covered by the licence terms.