What is firmographic data?

Firmographic data describes what a company is - size, industry, revenue, location, ownership, age. The fields, where they come from, why observed values beat estimates, and how firmographics anchor ICP filters, fit scores and every waterfall that follows.

GuideBY THE ASTROFABRIC TEAM · SEP 1, 2026 · 4 MIN READ

Firmographic data is the set of descriptive attributes that classify a company: its size, industry, revenue band, headquarters and locations, ownership structure, founding year and legal form. It is to companies what demographics are to people - the stable facts that define a segment - and it is the first family every ideal customer profile is written in, the first filter every list applies, and the confirmation step every identity resolution needs.

The definition

A firmographic record is the company's profile as a business entity. It changes slowly - a company does not change industry often, and its size moves in steps - which is why firmographics are the cheapest family to keep fresh and the one most safely cached. It is also the family most often wrong in a CRM, because values were typed by hand years ago or imported from a source that estimated them, and nobody recorded which. The company and person data guide places firmographics among the six company families and covers the data contract that keeps them honest.

The fields

THE FIRMOGRAPHIC FIELDS AND WHAT EACH ONE DECIDES
FieldTypical formDecides
Employee countA number or a band, with a dateSize fit, deal size expectations, buying committee shape
IndustryA classification code plus a descriptive categorySegment fit and the language of the outreach
Revenue bandA range, often estimated for private companiesBudget plausibility and tiering
Headquarters and locationsCountry, region, city; offices and service areasTerritory assignment, compliance, local prospecting
Ownership and structurePublic, private, PE-backed, subsidiary of, parent ofSuppression of customer subsidiaries, decision-making shape
Founding year and legal formA year; an entity typeMaturity and procurement expectations

Observed versus estimated

Employee counts and revenue bands for private companies are frequently estimates - a model's inference from headcount signals, web traffic or peer comparison - and a source that returns a number for every company is returning an estimate for most of them. That is acceptable when the record says so. It is a problem when an estimate lands in the CRM as a fact and replaces a value a rep learned in a real conversation. The provenance rules in waterfall data enrichment exist for exactly this field family: observed beats inferred, two estimates within tolerance raise confidence, and a value carries its source and date so a reader can tell which kind it is.

How it is used

Firmographics are the language of the ideal customer profile: the size band, the industries, the geographies and the ownership types that closed-won history says convert. They are the first filter in any list build and a stable component of any fit score. They confirm identity: when a resolved domain returns firmographics that contradict the list - a 2,000-person subsidiary where a 200-person startup was expected - the resolution is suspect. And they power segment reports and territory lists, where counts by industry, size and region are computed over a list rather than eyeballed. In an agent-run waterfall they run second, right after identity, because they decide whether a row is worth spending more credits on at all.

Frequently asked questions

What is firmographic data?

The descriptive attributes that classify a company as a business entity: employee count, industry, revenue band, headquarters and locations, ownership structure, founding year and legal form. It defines segments the way demographics define audiences.

What are examples of firmographic data?

A 350-employee private software company headquartered in Austin, founded in 2014, PE-backed, with a revenue band of $50 to $100 million - each field a firmographic attribute, ideally with its source and date attached.

How accurate are firmographic values?

Industry, location and ownership are usually observed and reliable. Employee counts and revenue bands for private companies are often estimates, so the record should say which, and observed values from real conversations should never be overwritten by inferred ones.

How are firmographics used in sales and marketing?

As the language of the ICP and the first filter in list building, as a stable component of fit scoring, as the confirmation step for identity resolution, and as the basis for segment reports and territory lists.

Sources

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