Identity graph
Cornerstone Personnel headquarters, locations and relationships
- Industry
- Software As A Service
- Founded
- 2001
- Phone
- +1 530 268 8884
- Website
- cornerstonejobs.com
Cornerstone Personnel office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Grass Valley | California | United States | Headquarters |
| — | Western Australia | Australia | Office |
| Sacramento | California | United States | Office |
| Saint Louis Park | Minnesota | United States | Office |
- Parent company
- No parent company recorded in GraphIQ.ai.
Verified from public filings, company websites and news · Methodology
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And more (available after sign-in)
Subsidiaries, people and lookalike companies.
Who uses the Cornerstone Personnel entity
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Revenue and GTM teams
Territories, enrichment and account expansion on one resolved account.
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The entity and its relationships through the REST API and MCP server.
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Government
About Cornerstone Personnel
Cornerstone Personnel is headquartered in Grass Valley, California, United States. Founded in 2001, the company has 4 recorded locations across 2 countries and employs approximately 499 people worldwide.
Where is Cornerstone Personnel's main office?
Cornerstone Personnel's main headquarters office is located at 21257 Knolls Dr, Grass Valley, California 95949-9504, United States. This is the company's primary corporate address.
Cornerstone Personnel regional offices
Beyond its headquarters in Grass Valley, Cornerstone Personnel has recorded locations in United States and Australia.
Cornerstone Personnel contact information
The main switchboard for Cornerstone Personnel headquarters can be reached at +1 530 268 8884. Official website: cornerstonejobs.com.
What does Cornerstone Personnel do?
Cornerstone Personnel offers staffing and recruitment services for light industrial, administrative, and professional roles.
One entity, every stage
Put Cornerstone Personnel to work across your revenue bowtie
- Target Define the market Build the account list from companies shaped like your best customers, Cornerstone Personnel included. Fingerprint search
- Cover Plan territories Cornerstone Personnel's 4 locations roll up to one account, so it lands in one territory, once. Territory planning
- Engage Act on timing Leadership changes, funding and M&A arrive linked to the account, not a loose headline. Signal monitoring
- Convert Close on a resolved record Inbound and closed-won attach to one CRM record, with no duplicates to merge. CRM enrichment
- Retain Ground every answer Customer teams and AI agents answer from the same entity, with a source and a date. AI agent data layer
- Expand Find the next buyer inside Follow subsidiaries and divisions to the next team that can buy. Account expansion
About the source
What is GraphIQ.ai?
A B2B identity graph. It resolves each organization into one verified entity and maps its parent and subsidiaries, employees, competitors and news signals. Revenue teams use it in the product; AI agents query it through the REST API and MCP server.
POST/api/v2/organizations/search
Cornerstone Personnel: frequently asked questions
Where is Cornerstone Personnel headquarters?
21257 Knolls Dr, Grass Valley, California 95949-9504, United States.
What is Cornerstone Personnel's phone number?
+1 530 268 8884 (headquarters).
When was Cornerstone Personnel founded?
2001.
How many employees does Cornerstone Personnel have?
About 499, as of October 2026 (GraphIQ.ai estimate).
How many offices does Cornerstone Personnel have?
4 locations across 2 countries, including Sacramento, Saint Louis Park.
Questions about GraphIQ.ai
Is GraphIQ.ai a list of companies like a spreadsheet?
No. Each organization resolves to one verified entity linked to its parent, subsidiaries, people and signals, so Cornerstone Personnel here is the same Cornerstone Personnel in your CRM, territory plan and agent answers.
Where does this Cornerstone Personnel data come from?
Public filings, company websites and news, resolved to one entity and continuously updated.