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Insights

Geographic Expansion Callos Resource has 21 offices across Ohio, Pennsylvania, Kansas, Kentucky, and Maryland, showcasing a strong regional presence ripe for local sales growth opportunities.

Industry Diversity With services catering to Manufacturing, Engineering, Retail, Medical, and Warehouse industries, Callos Resource can tap into a wide range of sectors for potential sales diversification.

Customer Portfolio Having partnerships with both Fortune 500 companies and small to medium-sized firms, Callos Resource's diverse client base presents an avenue for tailored sales strategies to meet varying business needs.

Tech-Savvy Approach Utilizing WordPress, MySQL, Google Analytics, and more, Callos Resource showcases a tech-forward image that can resonate well with businesses seeking innovative staffing solutions.

Financial Health With reported revenues between $10M to $50M, Callos Resource's healthy financial standing signals stability and capacity for potential partnership expansions and long-term sales opportunities.

Similar companies to Callos Resource

Callos Resource Tech Stack

Callos Resource uses 8 technology products and services including WordPress, MySQL, Google Font API, and more. Explore Callos Resource's tech stack below.

WordPress
Content Management System
MySQL
Database
Google Font API
Font Scripts
jQuery Migrate
Javascript Libraries
jQuery
Javascript Libraries
jQuery Mobile
Mobile Frameworks
Google Analytics
Web Analytics
Apache
Web Servers

Media & News

Callos invested into assets: Mac's Diner property on Apr 1st '22.
The Callos purchased the Mac's Diner property in April from Christopher McMahon.
Oct 20, 2022 | www.telegram.com

Callos Resource's Email Address Formats

Callos Resource uses at least 1 format(s):

Callos Resource Email Formats	Example	Percentage
FLast@callos.com	JDoe@callos.com	63%
First@callos.com	John@callos.com	23%
Last@callos.com	Doe@callos.com	14%

Frequently Asked Questions

Where is Callos Resource's headquarters located?

Callos Resource's main headquarters is located at 5083 Market Street, Corporate Center Building Youngstown, OH 44512, US. The company has employees across 3 continents, including North AmericaAfricaEurope.

What is Callos Resource's phone number?

You can contact Callos Resource's main corporate office by phone at

+1-330-788-****

. 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 Callos Resource's official website and social media links?

Callos Resource's official website is callos.com and has social profiles on LinkedIn.

How much revenue does Callos Resource generate?

As of May 2025, Callos Resource's annual revenue reached $21M.

What is Callos Resource's NAICS code?

Callos Resource's NAICS code is 5613 - Employment Services.

How many employees does Callos Resource have currently?

As of May 2025, Callos Resource has approximately 169 employees across 3 continents, including North AmericaAfricaEurope. Key team members include Co-Founder And Chief Executive Officer: N. B.Physician, President: A. N.Owner: K. H.. Explore Callos Resource's employee directory with LeadIQ.

What industry does Callos Resource belong to?

Callos Resource operates in the Staffing and Recruiting industry.

What technology does Callos Resource use?

Callos Resource's tech stack includes WordPressMySQLGoogle Font APIjQuery MigratejQueryjQuery MobileGoogle AnalyticsApache.

What is Callos Resource's email format?

Callos Resource's email format typically follows the pattern of . Find more Callos Resource email formats with LeadIQ.

When was Callos Resource founded?

Callos Resource was founded in 1965.

Callos Resource

Callos Resource

Staffing and RecruitingUnited States51-200 Employees

Established in 1965 by the late John Callos, Callos Resource has grown from one office in Youngstown, Ohio to 21 offices scattered throughout Ohio, Pennsylvania, Kansas, Kentucky and Maryland.  Callos provides a broad range of human resource services to a variety of businesses which include Temporary Services, Direct Hire Services, Payroll Services, and Medical/Nursing Services.  We do business with Fortune 500 companies as well as small and medium sized firms in the Manufacturing, Engineering, Retail, Medical and Warehouse industries. Our results-oriented professionals build strong partnerships with clients to ensure continuity between their corporate culture and our personnel services.

Experienced, educated and certified in a variety of disciplines, Callos Resource employs a team of committed Human Resource professionals. Valuing honesty, integrity and creativity, the management and staff of Callos Resource are dedicated to providing an unparalleled quality of service to their customers and their candidates.

Company Overview

Headquarters: 5083 Market Street, Corporate Center Building Youngstown, OH 44512, US
Phone number: +1-330-788-****
Website: callos.com
NAICS Code: 5613 - Employment Services
Founded: 1965
Employees: 51-200

Media & News

Callos invested into assets: Mac's Diner property on Apr 1st '22.
Oct 20, 2022 | www.telegram.com

Funding & Financials

$10M$50M
Callos Resource's revenue is in the range of $10M$50M

Funding & Financials

$10M$50M
Callos Resource's revenue is in the range of $10M$50M

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