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US Company Database
4.5M+
Professional services firm records with company name, EIN, address, phone, website, contact name and title, employee count, revenue, and NAICS/SIC codes.
The most complete list of professional and technical services firms in the USA. Your $499 purchase unlocks the full 134M+ nationwide bundle — including 4.5M+ law firms, accounting practices, management consultants, engineering firms, architects, and IT professionals.
Each database is sourced independently, giving you unique fields and maximum coverage of all US professional and technical services firms.
Professional services firm records with company name, EIN, address, phone, website, contact name and title, employee count, revenue, and NAICS/SIC codes.
Yellow Pages-sourced professional services records with GPS coordinates for territory mapping and regional targeting of consultants and advisors.
Decision-maker contacts at professional services firms — partners, principals, and senior managers — with email, direct phone, and job title.
Import directly into your CRM, dialer, or email platform. All fields are included across the three databases.
Scroll through actual records from the database. Phone numbers and emails are partially masked in the sample — the full purchased file includes all contact details unmasked.
From legal tech vendors to continuing education providers — the professional services database powers targeted B2B outreach across every advisory vertical.
Target law firms and legal practices with case management software, e-discovery tools, legal research platforms, document automation, and virtual paralegal services.
Reach CPA firms, tax preparers, and bookkeeping services with accounting software, tax automation tools, payroll platforms, and financial advisory tools.
Sell market research, competitive intelligence, and analytics platforms to management consultants and strategy firms actively advising clients.
Target consultants, engineers, architects, and licensed professionals with continuing education courses, certification prep, and professional development content.
Offer errors & omissions insurance, malpractice coverage, and professional liability policies to the thousands of law, accounting, and engineering firms in the database.
Market CRM platforms, project management tools, time-tracking software, billing systems, and collaboration tools to professional services firms of all sizes.
Build cold outreach lists targeting partners, principals, and managing directors at consulting firms, engineering practices, and advisory firms.
Identify licensed professionals — attorneys, CPAs, engineers, architects — at specific firms for recruiting, executive search, and talent placement.
Professional and technical services (NAICS 54) represents the knowledge economy in its purest form — 4.5M+ businesses providing specialized expertise across law, accounting, consulting, engineering, architecture, and technology. At 6.8% of our entire database, it is the second-largest sector and one of the highest-value for B2B outreach.
Professional services firms are typically owner-operated or partner-led, meaning your outreach reaches actual decision-makers — not procurement gatekeepers. The Email Database includes direct contact information for partners, principals, and managing directors in this sector.
Filter by NAICS 5411 for legal services, 5412 for accounting and bookkeeping, 5416 for management consulting, 5413 for architectural and engineering services, or 5415 for computer systems design. This precision lets you run campaigns targeting exactly the type of firm you serve.
All sub-categories are represented. Filter any of these within your CSV using the NAICS code column.
Law firms, accounting practices, consultants, engineers, architects, and more. The most comprehensive professional services database in the USA. One payment, instant download.
Get Instant Access — $499 View Sample DataThe full $499 bundle covers all 20 NAICS sectors. Explore data by other industries below.