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# Companies in Oakland, CA

Pick an industry to see the bigger companies headquartered in Oakland, CA, what they do and how big they are.

By Enrich.chat Editorial. Updated October 22, 2026.

## Industries in Oakland

- [Construction Companies in Oakland](https://enrich.chat/companies-in/oakland-ca/construction/): Construction
- [Nonprofit Organizations in Oakland](https://enrich.chat/companies-in/oakland-ca/non-profit-organizations/): Non-profit Organizations
- [Software Companies in Oakland](https://enrich.chat/companies-in/oakland-ca/software-development/): Software Development
- [Real Estate Companies in Oakland](https://enrich.chat/companies-in/oakland-ca/real-estate/): Real Estate
- [Hospitals and Health Care Organizations in Oakland](https://enrich.chat/companies-in/oakland-ca/hospitals-and-health-care/): Hospitals and Health Care
- [Education Organizations in Oakland](https://enrich.chat/companies-in/oakland-ca/education-administration-programs/): Education Administration Programs

**Short answer:** Browse the bigger companies headquartered in Oakland, CA by industry. Each page lists up to 25 of the biggest by headcount range, what they do and how big they are.

## Key takeaways

- Each page lists up to 25 of the biggest companies in one industry.
- Sizes are ranges, never exact headcounts.
- Ask your AI agent to use www.enrich.chat to find the people at any of them.

## Frequently asked questions

### How are the companies chosen?

Companies shown have a working website that matches their name and list Oakland, CA as their headquarters. The biggest by headcount range come first.