---
title: "Counties | Data Tactical Group"
route: "/docs/counties"
updated: "2026-10-23"
---

# Counties

A plan buys counties. The pages below cover how many counties a plan includes, how to change them, and how to save a set of areas as an area cluster.

## Who this section is for

Anyone deciding which counties to buy, or wondering why a county is greyed in the areas picker. The county model is simple but it is not obvious: a plan includes a number of counties, chosen anywhere in the country; a state or a metropolitan area is a shortcut for choosing many at once; and a set of areas you want to reuse can be saved as an area cluster. The pages below explain each part.

How aggregation changes a value, and why a state assembled from counties is not the same as the state, is on the methodology’s [geography](/docs/methodology/geography) page.

- [Area clusters](/docs/counties/area-clusters)
- [Changing your counties](/docs/counties/changing-counties)
- [Counties included in a plan](/docs/counties/counties-in-a-plan)

Still stuck? A person can help.

[Get support](/support)