Sources & reuse
See which Census, CDC, ONS, Eurostat and Pew sources CouplesData uses, what they cover, and their reuse and attribution terms.
Data Commons research: sources, coverage and rights
Sources are assessed individually for scope and reuse. These are the sources actually connected in release 2026-10-01-r3.
U.S. Census Bureau — American Community Survey
Official table-based Summary Files; optional authenticated API. Retained estimates, MOEs, table universes and geography labels. No individual records. API-based use must include Census non-endorsement notice.
Attribution: Source: U.S. Census Bureau, ACS 1-year estimates. Calculations identified as CouplesData.
Rights/access checked 2026-10-01. U.S. federal statistical data; source attribution and no endorsement.
CDC/NCHS — National Vital Statistics System
Official PDF text retained through web retrieval; direct XLSX download returned HTTP 403. Provisional series. Year-specific coverage retained. Automated PDF extraction from a different service was rejected after inconsistencies were detected.
Attribution: Source: CDC/NCHS, National Vital Statistics System. Original data available free from CDC. Use does not imply CDC, HHS or U.S. Government endorsement.
Rights/access checked 2026-10-01. U.S. federal data; attribution, free-source and non-endorsement notices.
Eurostat — Marriage and divorce indicators
Public JSON-stat API; snapshots retained. France, Germany, Italy, Spain and Sweden only. Retain missing values, flags and source versions. No promise of global commercial reuse.
Attribution: Source: Eurostat, demo_nind / demo_ndivind. Selection and presentation by CouplesData; Eurostat is not responsible for these changes.
Rights/access checked 2026-10-01. Eurostat reuse policy; selected EU countries only.
Office for National Statistics
2024 and 2025 workbook, released 23 September 2026. England and Wales only. Workbook notes and cohort assumptions retained.
Attribution: Source: Office for National Statistics licensed under the Open Government Licence v3.0. Contains public sector information licensed under the OGL v3.0.
Rights/access checked 2026-10-01. Open Government Licence v3.0.
Curated survey evidence
The dating explainer cites selected findings from Pew Research Center. It does not redistribute Pew microdata or images. Pew terms were checked October 1, 2026.
Not connected
HCMST microdata and UN datasets are not part of this release. HCMST requires a dataset-specific agreement and notification of work to the dataset contact. Public availability alone does not remove those obligations.