---
title: ToolRouter — Use Case
description: Step-by-step guide for a real-world ToolRouter use case with agent-specific instructions.
url: https://toolrouter.com/tools/country-data/use-cases/research-population-stats
---
# Research Population Statistics

Population statistics drive decisions across business, government, and academia. Market sizing depends on population counts. Infrastructure planning requires density and urbanization data. Investment models use growth rates. Aid organizations track population distribution to allocate resources effectively.

The lookup skill provides population data for specific countries, while search finds countries matching population criteria -- such as all countries with populations above a threshold or density below a certain level. Together they support both targeted research and exploratory analysis of population patterns globally.

**Tool:** [Country Data](https://toolrouter.com/tools/country-data)
**Skills:** lookup, search

## Agent Guides

- [How to Research Population Stats with Claude](https://toolrouter.com/tools/country-data/use-cases/research-population-stats/claude): Guide for Claude
- [How to Research Population Stats with ChatGPT](https://toolrouter.com/tools/country-data/use-cases/research-population-stats/chatgpt): Guide for ChatGPT
- [How to Research Population Stats with Copilot](https://toolrouter.com/tools/country-data/use-cases/research-population-stats/copilot): Guide for Copilot
- [How to Research Population Stats with OpenClaw](https://toolrouter.com/tools/country-data/use-cases/research-population-stats/openclaw): Guide for OpenClaw
