Free U.S. B2B leads dataset: 9.5M people, 1.75M companies

Sign up with your work email; the dataset is on your dashboard with a download button. Or from the API, with the key on that same dashboard: GET /files/ lists it as us_10m, and its download link is valid for one hour.

curl https://api.datacircle.dev/files/ -H "Authorization: Token $DATACIRCLE_API_KEY"
curl -X POST https://api.datacircle.dev/files/$FILE_ID/download-link/ \
  -H "Authorization: Token $DATACIRCLE_API_KEY"

import pandas as pd
companies = pd.read_parquet("us_smb_mid_market_companies.parquet")
people = pd.read_parquet("us_smb_mid_market_persons.parquet")
leads = people.merge(companies, left_on="CURRENT_JOB_COMPANY_LINKEDIN_ID", right_on="LINKEDIN_ID", suffixes=("", "_COMPANY"))

What the free plans of Apollo, Lusha, Hunter and others give a month, next to this file: free B2B database. A leads list cut by state, industry and title in one DuckDB query, with what it gives: build a free B2B leads list with SQL.

Every column, with its fill rate in the October 2026 release. A field is filled only where we have it: nothing is guessed.

US companies with a claimed LinkedIn page and 11 to 500 employees (6,700,867 in the 50M+ dataset, every size). How they split by state, industry and size: the free list of US companies.

The 50M+ dataset's 43,598,308 people by the state on their profile, with how many have a work email and a mobile phone in its October 2026 release: 27.09% and 42.88% overall. The free 10M+ dataset holds 9,521,154 people at companies of 11 to 500 employees; all 43,598,308 unlock once 3 people you invited sign up. Counted from the file itself.

The companies the same way, by state, industry and size: the free list of US companies.

Want a niche, already cut? Our free lists come from the 50M+ dataset, one CSV each:

• Founders and CEOs of US software companies (11-1,000 employees)
• Sales leaders of US B2B companies (11-500 employees)
• Talent and people leaders of US companies (51-500 employees)
• Owners of US marketing, advertising and PR agencies (11-1,000 employees)
• Finance leaders of US companies (51-1,000 employees)
• IT leaders of US companies (51-1,000 employees)
• Marketing leaders of US B2B companies (11-500 employees)

Every field of both datasets: Dataset fields in the docs.