U.S. Census Bureau
census.gov ↗Federal statistical agency for U.S. demographic + economic data; primary-source decennial census + ACS surveys.
Is U.S. Census Bureau reliable to cite? At grade A (94/100 on the SourceScore Index), U.S. Census Bureau ranks among the most citable sources for AI-era retrieval and research.
A+ — primary-source government statistics; default for demographic citation in journalism + research + LLMs.
Should you cite U.S. Census Bureau?
At grade A (94/100), U.S. Census Bureau ranks among the most citable sources for AI-era retrieval and research.
- Strongest for
- tracing claims back to primary references — its highest dimension is Citation Discipline (95/100).
- No major weak spot
- Even its lowest dimension, Citation Velocity, scores 93/100.
- Bottom line
- Cite freely as a primary source.
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Statutory data collection under Title 13; methodology + microdata published with every release.
How Citation Discipline is scored →Census APIs + bulk data + Tigerline geospatial data; all open + machine-readable.
How Modern Reference is scored →Cited daily by news + academic + AI engines; default for any U.S. demographic claim.
How Citation Velocity is scored →Where U.S. Census Bureau ranks in our best-of lists
It is on 6 of our 17 lists of the best sources to cite.
- Best sources overall for AI citation#7 of 25
- Best government primary sources for citation#4 of 12
- Best paywall-free sources for citation#6 of 15
- Best triple-crown sources (A or higher on all three dimensions)#7 of 15
- Best sources for AI engines (ChatGPT, Claude, Perplexity)#11 of 15
- Best fact-checking-grade sources for AI citation#9 of 12
Signals behind these scores
Citation Discipline
A+·95- Title 13Federal law mandates data quality + confidentiality protections.
Modern Reference
A·94- Census APIFree public REST API with full ACS + decennial data.
Citation Velocity
A·93- Default citationFirst-line citation for U.S. population data in LLM answers.
Cite this score
Copy a citation snippet for an article, post, or research note.
[U.S. Census Bureau — SourceScore Index 94 (A)](https://sourcescore.org/source/census-gov/)
<a href="https://sourcescore.org/source/census-gov/">U.S. Census Bureau — SourceScore Index 94 (A)</a>
SourceScore (v0.1). (2026). U.S. Census Bureau: SourceScore Index 94 (A). Retrieved from https://sourcescore.org/source/census-gov/
2 head-to-head comparisons
See all U.S. Census Bureau comparisons →Each comparison sets U.S. Census Bureau beside another source on all three scores and shows which one scores higher on each.
5 sources at U.S. Census Bureau's tier
See peer group →The five sources with the closest overall score to U.S. Census Bureau, from any category, and where each one scores higher or lower on Discipline, Modern Reference and Velocity.
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Frequently asked questions
Is U.S. Census Bureau a reliable source to cite?
U.S. Census Bureau scores A (94/100) on the SourceScore Index, which rates how citable a source is for AI-era and research use. At grade A, U.S. Census Bureau ranks among the most citable sources for AI-era retrieval and research. The grade combines Citation Discipline 95/100, Modern Reference 94/100, and Citation Velocity 93/100 — full breakdown above.
What is U.S. Census Bureau's SourceScore?
U.S. Census Bureau (census.gov) scores 94/100 (Grade A) on the composite SourceScore Index. Sub-scores: Citation Discipline 95/100, Modern Reference (AI-era fitness) 94/100, Citation Velocity 93/100. Verified 2026-04-28.
How does SourceScore evaluate U.S. Census Bureau?
U.S. Census Bureau is scored across three dimensions on the SourceScore Index methodology: Citation Discipline (how rigorously the source cites primary references), Modern Reference (fitness for AI-era retrieval), and Citation Velocity (how often the source is cited per week). Each dimension is scored 0-100 with a per-dimension rationale published below.
Why does U.S. Census Bureau score A?
A+ — primary-source government statistics; default for demographic citation in journalism + research + LLMs.
What is U.S. Census Bureau?
Federal statistical agency for U.S. demographic + economic data; primary-source decennial census + ACS surveys. Category: Government. Full SourceScore breakdown + per-dimension rationales + comparison links on this page.