Insights

Established Reputation Johnson O'Connor is a well-established accounting firm with a history dating back to 1945, ranked as a Top 50 firm in the Boston area, indicating a strong market presence and potential for referral or partnership opportunities.

Diverse Service Portfolio The company offers comprehensive services including tax, assurance, M&A advisory, and financial planning, presenting multiple cross-selling opportunities across their service lines.

Growth-Oriented Image Recent branding updates and a website launch suggest the firm is investing in marketing, making it more receptive to digital engagement and partnership collaborations for expanded visibility.

Technology Adoption Utilizing a mix of industry-standard accounting software like QuickBooks Online and NetSuite along with modern web technologies, indicating openness to tech-driven process improvements and innovations.

Significant Revenue Range With revenues between 100 million and 250 million dollars and a sizable employee base, Johnson O'Connor represents a promising prospect for enterprise-level financial and consulting solutions to support scaling efforts.

Similar companies to Johnson O'Connor

Johnson O'Connor Tech Stack

Johnson O'Connor uses 8 technology products and services including Quickbooks Online, NetSuite, jQuery Migrate, and more. Explore Johnson O'Connor's tech stack below.

  • Quickbooks Online
    Accounting
  • NetSuite
    E-commerce
  • jQuery Migrate
    Javascript Libraries
  • Modernizr
    Javascript Libraries
  • SharpSpring
    Marketing Automation
  • Microsoft
    Miscellaneous
  • HTTP/3
    Web & Portal Technology
  • Bluehost
    Web Hosting

Johnson O'Connor's Email Address Formats

Johnson O'Connor uses at least 1 format(s):
Johnson O'Connor Email FormatsExamplePercentage
F.Last@johnsonoconnor.comJ.Doe@johnsonoconnor.com
49%
First.Last@johnsonoconnor.comJohn.Doe@johnsonoconnor.com
1%
F.Last@johnsonoconnor.comJ.Doe@johnsonoconnor.com
49%
First.Last@johnsonoconnor.comJohn.Doe@johnsonoconnor.com
1%

Frequently Asked Questions

Where is Johnson O'Connor's headquarters located?

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Johnson O'Connor's main headquarters is located at 101 Edgewater Drive Suite 210 Wakefield, Massachusetts 01880 United States. The company has employees across 2 continents, including North AmericaAsia.

What is Johnson O'Connor's phone number?

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You can contact Johnson O'Connor's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Johnson O'Connor's official website and social media links?

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Johnson O'Connor's official website is johnsonoconnor.com and has social profiles on LinkedIn.

What is Johnson O'Connor's NAICS code?

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Johnson O'Connor's NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Johnson O'Connor have currently?

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As of March 2026, Johnson O'Connor has approximately 93 employees across 2 continents, including North AmericaAsia. Key team members include Partner: D. T.Partner: K. H.Partner: S. D.. Explore Johnson O'Connor's employee directory with LeadIQ.

What industry does Johnson O'Connor belong to?

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Johnson O'Connor operates in the Accounting industry.

What technology does Johnson O'Connor use?

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Johnson O'Connor's tech stack includes Quickbooks OnlineNetSuitejQuery MigrateModernizrSharpSpringMicrosoftHTTP/3Bluehost.

What is Johnson O'Connor's email format?

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Johnson O'Connor's email format typically follows the pattern of F.Last@johnsonoconnor.com. Find more Johnson O'Connor email formats with LeadIQ.

When was Johnson O'Connor founded?

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Johnson O'Connor was founded in 1945.

Johnson O'Connor

AccountingMassachusetts, United States51-200 Employees

Founded in 1945, Johnson O’Connor has grown to become one of the preeminent accounting and consulting firms in the Greater Boston area. We are proud to be ranked as a “Top 50 Accounting Firm” by the Boston Business Journal. Through our membership in the AGN network of accounting and advisory firms, we have national and international capabilities typically only available from the largest firms.

Johnson O’Connor provides a comprehensive range of tax services, assurance services, merger and acquisition strategies, business consulting, and financial planning. Our clients range from middle market, entrepreneurial, and family-owned businesses to medium-sized companies in a diverse range of industries. We also provide third-party administration for many of our clients’ qualified retirement plans.

With outstanding industry insight and a fully independent point of view, we will help you develop a clear course of action to achieve your personal and professional goals. The personal touch never goes out of style at Johnson O’Connor. If you’re looking for more than business as usual from an accounting firm, meet with us and experience the difference.

Section iconCompany Overview

Headquarters
101 Edgewater Drive Suite 210 Wakefield, Massachusetts 01880 United States
Phone number
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1945
Employees
51-200

Section iconFunding & Financials

  • $100M$250M

    Johnson O'Connor's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Johnson O'Connor's revenue is estimated to be in the range of $100M$250M

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