About List57

Est. 1997 — In Our 30th Year

List57 was founded in 1997 by Russ Guillemot, a former Air Traffic Controller with the US Air Force and the FAA. A friend and business associate introduced him to the list brokerage business, and he has been in it ever since.

For nearly three decades, List57 has helped direct marketers, small businesses, and agencies find the right audience for their campaigns. We broker business lists, consumer lists, specialty lists, and response files across virtually every industry and demographic.

What Has Changed

The data business looks different in 2026 than it did in 1997. Scrapers, AI tools, and cheap data sources have commoditized basic list counts. The value is no longer just in having the data — it is in knowing which data converts, and having the system to follow up on it properly.

That is why List57 now partners with HighLevel to offer fully managed marketing accounts for local businesses. We bring the data. We build the system. We run it for you.

Who We Work With

• Direct mail marketers and agencies
• Insurance agents and financial advisors
• Real estate investors and agents
• Local service businesses (medical, legal, home services, automotive)
• Non-profits and political campaigns
• Anyone who needs to reach a specific audience at scale

Our Approach

We are a brokerage, which means we have access to thousands of list sources — not just one database. When you tell us what you are trying to accomplish, we find the right file, negotiate the best rate, and make sure the data is clean and deliverable before it ships.

We are also small enough that you talk to a real person every time. Russ and his daughter Cori run the business together. When you call or email, you get one of them.

The Team