NationGraph vs ZoomInfo vs Apollo for SLED Decision-Maker Contacts (2026)

Last updated: November 2026

Quick answer

For finding state, local, and education (SLED) decision-makers, NationGraph is built for the job and ZoomInfo and Apollo are not. NationGraph covers 160,000+ SLED institutions with 2M+ verified contacts matched to the roles that own public budgets, and shows each contact next to the agency's active buying signal. It covers decision makers and contracting officers at federal agencies too. ZoomInfo and Apollo are larger general B2B databases organized around companies and job titles, which makes them the better choice when most of your pipeline is commercial and government is a side segment.

Many teams run both: a general database for commercial accounts and a public sector platform for agencies.

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NationGraph vs ZoomInfo vs Apollo at a glance

Database figures are each vendor's own published numbers, checked November 2026: ZoomInfo from zoominfo.com/data, Apollo from apollo.io. Apollo's Basic price is as reported by a November 2026 comparison; confirm current pricing with each vendor.

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How does NationGraph compare to ZoomInfo for public sector procurement contacts?

NationGraph is narrower and deeper: it covers only the public sector (federal, state, local, and education), but it matches contacts to the roles that own public budgets and ties each one to a buying signal from public records. ZoomInfo is far bigger, with 500M+ contacts across every industry, but it organizes them around companies and titles, so a school district or county is just another account.

That difference shows up in what a rep can do next. In ZoomInfo you find the IT director at a county. In NationGraph you find the IT director at a county whose board just approved a budget line for the thing you sell, with the source record attached. See how NationGraph Contacts works.

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How does ZoomInfo compare to Apollo for state and local agency contacts?

Both treat government agencies as accounts in a general B2B database, so the choice between them comes down to size and price rather than public sector features. ZoomInfo is larger, with 500M+ contacts and 135M+ direct dials, and sells custom packages with no public price. Apollo has 240M+ contacts, a free plan, and published per-seat plans, so it is the cheaper way to start.

Neither is built around the public records that show when an agency is ready to buy, such as draft budgets, board votes, or contracts nearing their end date. Teams that sell mostly to government usually add a SLED platform for that layer.

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Where ZoomInfo and Apollo are stronger

• Breadth. They cover commercial companies in every industry. NationGraph covers only U.S. government: federal agencies and state, local, and education institutions.
• Database size. ZoomInfo's 500M+ and Apollo's 240M+ contacts dwarf any government-only dataset.
• Direct dials. ZoomInfo publishes 135M+ direct dial numbers.
• Low-cost entry. Apollo has a free plan and published self-serve pricing.
• Built-in sequencing. Apollo includes email sequencing on its paid plans.

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Where NationGraph is stronger

• Roles that match public buying. Superintendents, procurement directors, IT leaders, and county CFOs, each with a verified work email and current title.
• Contacts attached to a buying window. Every contact is shown against the agency's active signal, with the source record and intent next to the person.
• Public sector coverage. 160,000+ institutions across K-12, higher ed, city, and county, built from public records rather than purchased lists, plus decision makers and contracting officers at federal agencies.
• Competitor contracts. Public records automation returns the incumbent's signed contract with value, term, and end date.

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Which should you choose?

Choose NationGraph if most of your revenue comes from federal, state, local, or education agencies and you want contacts tied to a reason to reach out now. Skip it if you sell mostly to businesses or need international contacts.

Choose ZoomInfo if you need the largest commercial database with direct dials and have budget for a custom package. Skip it if SLED is your core market and you need procurement roles and public-record signals.

Choose Apollo if you want a free or low-cost commercial database with built-in sequencing. Skip it if you need government-specific roles and buying signals.

For more options, see Dun & Bradstreet alternatives for SLED agency data and our SLED sales intelligence platforms comparison. To see the decision-makers behind live signals in your own territory, request 10 free pre-RFP opportunities.

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Frequently asked questions