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The 40 largest companies in Westborough

Tamtam tracks 40 companies headquartered in Westborough. This list ranks all of them by number of employees on LinkedIn, led by EG America, eClinicalWorks and Cumberland Farms. Their median headcount is 319. Half of them were founded in 1997 or later.

馃嚭馃嚫 Westborough40 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
EG Americaeg-america.com

A rapidly growing convenience store retailer in the US, part of a global company, offering top-notch products and services nationwide

Retail 馃嚭馃嚫 Westborough 9,343 2019
2
eClinicalWorkseclinicalworks.com

It provides Electronic Health Record and Practice Management solutions to medical professionals, enhancing care quality and reducing costs through technology.

Software Development 馃嚭馃嚫 Westborough 5,426 1999
3
Cumberland Farmscumberlandfarms.com

A convenience store and petroleum marketer operating in New England and Florida Also manages commercial properties such as strip centers and gas stations

Retail 馃嚭馃嚫 Westborough 3,798 1939
4
Turkey Hill Minit Marketsnowhiring.com

Operating over 270 stores in multiple states, we provide fresh food, popular coffee, a variety of snacks, Turkey Hill products, and fresh sandwich and salad lines

Retail 馃嚭馃嚫 Westborough 1,256 1967
5
Tom Thumb Storestomthumbcstores.com

A leading convenience store and fuel station chain in Florida and southern Alabama, offering a variety of food, snacks, beverages, and fuel services

Retail 馃嚭馃嚫 Westborough 923 1953
6
Loaf 'N Jugloafnjug.com

A convenience store company with 152 locations in 8 states offering fresh foods, beverages, snacks, groceries, and fuel products, committed to excellent customer service and convenience

Retail 馃嚭馃嚫 Westborough 822 1973
7
Kwik Shop Inc.kwikshop.com

A leading convenience store chain in the US, committed to delivering modern retail experiences, quality products, exceptional customer service, and convenience to valued guests

Retail 馃嚭馃嚫 Westborough 732 1960
8
Spectrum Health Systems, Inc.spectrumhealthsystems.org

An innovative non-profit provider of evidence-based treatment for substance use and mental health disorders, offering a broad continuum of services

Mental Health Care 馃嚭馃嚫 Westborough 665 1969
9
DATAmundidatamundi.ai

A global language and technology service provider specializing in technology-enabled localization, managed services, and data solutions for content-rich companies worldwide

Technology, Information and Internet 馃嚭馃嚫 Westborough 544 2012
10
NORESCOnoresco.com

This company helps clients reduce carbon emissions and improve infrastructure sustainability by deploying innovative energy solutions, saving costs, and reducing CO2 emissions

Construction 馃嚭馃嚫 Westborough 500 1984
11
Minit Martminitmart.com

A convenience store chain offering gas, food, and retail items Part of a global group with locations across Europe and North America

Retail 馃嚭馃嚫 Westborough 466 n/a
12
ForHealth Consulting at UMass Chan Medical Schoolforhealthconsulting.umassmed.edu

Partnering with purposeful organizations to improve healthcare equity, effectiveness, and accessibility by transforming payment, information management, and care delivery systems

Business Consulting and Services 馃嚭馃嚫 Westborough 444 n/a
13
Vsynergizevsynergize.com

A versatile service provider specializing in AI Contact Center solutions and BPO services, driving digital transformations, enhancing CX, and empowering education

Outsourcing and Offshoring Consulting 馃嚭馃嚫 Westborough 436 2001
14
Murata Power Solutionsmurata.com

Leading provider of power conversion products, focused on server, storage, networking, E-Mobility, electric vehicles, robotics, and energy storage with quality products.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Westborough 420 2007
15
AAFCPAsaafcpa.com

A premier CPA and consulting firm in New England offering audit, tax, accounting, and advisory solutions to nonprofits, commercial companies, and wealthy individuals

Accounting 馃嚭馃嚫 Westborough 396 1973
16
Health Plans, Inc.hpitpa.com

This company partners with health plan brokers and employers to provide innovative self-funding strategies and custom plans for cost transparency and control

Insurance 馃嚭馃嚫 Westborough 378 1981
17
Quick Stopnowhiring.com

Convenience store chain with locations in California and Nevada, offering fresh food, merchandise, and fuel services in over 100 communities

Retail 馃嚭馃嚫 Westborough 368 n/a
18
The Key Program, Inckey.org

This organization offers support and services to troubled youth and their families, focusing on positive life skills, quality care, and community safety

Non-profit Organizations 馃嚭馃嚫 Westborough 356 1974
19
UMS - United Medical Systemsfinnitivhealth.com

Provider of advanced mobile medical services to hospitals, surgery centers, and offices nationwide, offering cost-efficient solutions and superior patient care

Hospitals and Health Care 馃嚭馃嚫 Westborough 330 n/a
20
Columbia Techcoghlincompanies.com

Columbia Tech offers engineering design, manufacturing, global fulfillment, and aftermarket services to leaders in various industries including life sciences and defense

Manufacturing 馃嚭馃嚫 Westborough 319 n/a
21
KPM Analyticskpmanalytics.com

global provider of analytical instruments and services for food, agriculture, clinical, and environmental sectors ensuring quality and process control

Food and Beverage Manufacturing 馃嚭馃嚫 Westborough 247 2015
22
Fastrac Marketsfastraccafe.com

A leading convenience store operator in Upstate New York offering fresh food, quality products, and fast fueling stations with a commitment to excellent customer service and convenience

Retail 馃嚭馃嚫 Westborough 244 n/a
23
Alpha Analyticalalphalab.com

An environmental laboratory providing comprehensive solutions for industrial and commercial applications, specializing in air, water, soil analysis, emerging contaminants, and petroleum forensics since 1987

Environmental Services 馃嚭馃嚫 Westborough 226 1985
24
Saras Analyticssarasanalytics.com

Builds AI workforce and enterprise tools for D2C brands, simplifying complex data challenges and enabling informed decisions through better data infrastructure and expert services.

Data Infrastructure and Analytics 馃嚭馃嚫 Westborough 215 2016
25
Westborough Public Schoolswestboroughk12.org

A diverse and innovative public school district in Westborough, supporting students and staff to achieve high academic success and global citizenship

Primary and Secondary Education 馃嚭馃嚫 Westborough 174 n/a
26
Conservation Services Groupcsgrp.com

The company is a top provider of residential energy efficiency programs, offering customized solutions to save energy, money, and improve home comfort

Environmental Services 馃嚭馃嚫 Westborough 172 1984
27
infosenseglobal

Infosenseglobal provides advanced technology solutions, specializing in Oracle applications and web development for businesses worldwide Their services include IT outsourcing, application integration, and research & development

IT Services and IT Consulting 馃嚭馃嚫 Westborough 165 2006
28
Quality Matrix Groupquality-matrix.com

Cutting-edge digital solutions provider offering quality assurance, DevOps, Salesforce integration, RPA, and data services to enhance business efficiency and agility globally

IT Services and IT Consulting 馃嚭馃嚫 Westborough 157 2002
29
Town of Westboroughtown.westborough.ma.us

The company is located in Westborough, Massachusetts, offering a mix of residences, industry, and commuter rail access to Boston and Worcester

Government Administration 馃嚭馃嚫 Westborough 155 1717
30
Ascend Elementsascendelements.com

A leading provider of sustainable battery materials solutions, revolutionizing lithium-ion production with innovative recycling technology for lower emissions and landfill waste

Services for Renewable Energy 馃嚭馃嚫 Westborough 148 2015
31
Connectbaseconnectbase.com

It is a platform that enables service providers to buy and sell connectivity efficiently, leveraging location intelligence and automated workflows.

Software Development 馃嚭馃嚫 Westborough 133 2015
32
Columbia Gas of Massachusetts, now Eversource. Please follow our company page, Eversourceeversource.com

The company is inviting people to follow their company page on Linkedin, offering an insight into Eversource Energy's services

Utilities 馃嚭馃嚫 Westborough 103 n/a
33
Grimes & Companygrimesco.com

A Registered Investment Advisor offering portfolio and wealth management services with a highly experienced team and a focus on disciplined asset management and strong performance

Investment Management 馃嚭馃嚫 Westborough 86 1985
34
Stowe & Degon LLCstowedegon.com

A full-service accounting firm with experienced professionals offering auditing, tax, financial advisory services, and consulting to diverse corporate and private clients

Accounting 馃嚭馃嚫 Westborough 56 1997
35
CCR Wealth Managementccrwealth.com

A wealth management firm offering personalized financial planning solutions, portfolio management, insurance strategies, and investment management to individuals, corporations, and institutions

Financial Services 馃嚭馃嚫 Westborough 54 1998
36
Component Sources International (CSI) Groupcompsources.com

A specialized group offering unique manufacturing processes for precision components with world-class service, engineering support, and a variety of industries served

Industrial Machinery Manufacturing 馃嚭馃嚫 Westborough 28 1986
37
Sentri

A leading provider of IT services, consulting, and solutions integration Specializing in communication & collaboration tools, managed services, and customized technology solutions

IT Services and IT Consulting 馃嚭馃嚫 Westborough 27 1999
38
Zensoft IT Solutions Inczensoftit.com

Global provider of software development, process outsourcing, and corporate consulting services for businesses and government agencies across various industries

IT Services and IT Consulting 馃嚭馃嚫 Westborough 24 2017
39
Vsynergize Globalvsyenrgizeglobal.com

A global IT services provider with industry-certified standards, offering solutions in telecom, banking, healthcare, consumer goods, logistics, emphasizing quality, innovation, and customer satisfaction

IT Services and IT Consulting 馃嚭馃嚫 Westborough 21 2007
40
NYSEARCH / NGAnysearch.org

A collaborative organization managing premier natural gas RD & D programs for gas utilities, focusing on improving safety, efficiency, and innovation in gas delivery systems

Utilities 馃嚭馃嚫 Westborough 10 1982

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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