What is firmographic data and segmentation
Last updated 2026-04-28. This post replaces the earlier version. We rewrote it for the AI-search era and the modern B2B reality. Firmographic data is the floor of B2B segmentation, not the ceiling. If you are still segmenting only by industry and headcount in 2026, you are leaving accuracy on the table.
The 30-second answer
Firmographic segmentation is the practice of grouping companies by their organizational attributes: industry, employee count, revenue, geography, growth stage, ownership type, and tech stack. In B2B it is the foundation of every account-based program. It tells you which companies look like your best customers. It does not tell you which of those companies are in-market this quarter. For that, you layer intent and engagement data on top.
