SIEM Mexico as a B2B Data Source
Entering the Mexican market without a Spanish-speaking research team feels like a real barrier. SIEM — the Sistema de Información Empresarial Mexicano — removes part of that problem: it's a free, official registry of Mexican companies, government-maintained.
Here's what it contains, how to segment it properly, and where formal government data needs help before it's ready for outreach.
What SIEM Mexico is
SIEM is the Mexican government's business registry and directory, published by the Secretaría de Economía. It covers over 82,000 registered companies with detailed profile data submitted at registration.
Because it's official and free, it's a solid starting universe for any B2B effort in Mexico — more structured than a scraped directory, and with no license or paywall to work around.
What data can be obtained
| Data field | Why it matters |
|---|---|
| Legal name (razón social) | The company's registered legal identity |
| State and municipality | Precise location targeting down to the colonia (neighborhood) |
| Address and postal code | Full mailing address for the registered location |
| Phone and email | Often present — a rare feature for an official registry |
| Industry (giro) and SCIAN code | SCIAN is the more precise, standardized classification |
| Employee range | Rough company-size segmentation |
Who this source is good for
Market research on Mexican companies
Get an authoritative, government-sourced universe of businesses before spending on enrichment.
Segmenting by state, industry or size
State, SCIAN code and employee range together give a real B2B segmentation, not just a flat list.
Mexico-focused lead lists
For anyone selling into Mexico specifically, this is a more precise starting point than a generic global database.
Limitations to know about
Freshness depends on government updates
Records are only as current as the last update from the registering business — some listings lag.
Field completeness varies
Across 82,000+ records, how much detail each one includes isn't consistent — some rows are thin.
Tone and format differ from commercial data
This is formal, government-style data. It reads differently from a commercial database and needs care when repurposed for sales use.
From raw source to outreach-ready list
We segment SIEM by state, SCIAN code and company size, cross-check the contact fields that are present, and fill in what's missing — verified emails included — so the result reads like a sales-ready list, not a government export.
SCIAN gives a much more precise industry cut than the free-text giro field, so we lean on it when a brief calls for a specific sector.
Frequently Asked Questions
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