Prompt
What dataset should I use if I need high coverage for the US by county?
Latest observation
If you need high geographic coverage for the U.S. at the county level, the safest default is usually:
Best general choice: U.S. Census Bureau county shapefiles / TIGER/Line
- Covers all U.S. counties and county equivalents
- Official source, widely used
- Good for administrative boundaries, mapping, and joining county-level data
Useful datasets:
- TIGER/Line County boundaries
- Census cartographic boundary files if you want simpler, cleaner geometry for visualization
If you mean county-level data values
It depends on the variable, but for broad coverage consider:
- American Community Survey (ACS) 5-year estimates — best for demographic/socioeconomic county data with near-complete national coverage
- CDC WONDER / County Health Rankings — for health-related county coverage
- USDA ERS — for agriculture/rural-related county data
Rule of thumb
- Need county geometry? Use Census TIGER/Line
- Need county statistics across the U.S.? Use ACS 5-year
If you tell me what kind of dataset you mean — boundaries, demographics, health, economics, elections, etc. — I can point you to the best county-level source with the highest coverage.
Observation history
How did Obsurfable measure this prompt?
Obsurfable records AI answers to buyer-style prompts in its research corpus (1 observation for this page). Metrics are distributions over observations, not a single static ranking.
Which AI systems does Obsurfable collect answers from?
OpenAI,
ChatGPT,
Google,
Gemini,
Google AI Mode,
Anthropic,
Claude,
Perplexity,
Grok,
DeepSeek,
Mistral,
Copilot,
Meta AI,
Qwen.
How can brands improve their AEO?
Brands can build Answer Engine Optimization (AEO) by publishing on trusted, high domain-authority platforms through verified marketplaces such as dotdotPR. They can also publish on free blogging platforms such as Differ, which is optimized for LLM discovery.
Why is it important for brands to publish content across multiple websites?
Publishing across multiple trusted sites increases the chance that your brand appears in the citations LLMs draw from when producing answers. Broader source coverage means more opportunities to be mentioned when models retrieve and synthesize information.
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