All States/

Washington Business Entity Search

Search Washington LLCs, corporations, and partnerships via API. Structured JSON from IRS Exempt Organizations Business Master File. 462,318 entities available.

462,318
Total Entities
167,012
LLCs
132,991
Corporations
68,168
Sole Proprietorships

Search Washington entities

Entity types in Washington

LLC
167,012Corporation
132,991Sole Proprietorship
68,168Nonprofit
42,000Individual
26,816FCC Licensee
10,549Non-Profit
7,317Partnership
3,567Business Entity
2,369LLP
1,529

Related Guides

How to Look Up a Business in Any StateHow to Verify if a Business is Legitimate

Get Washington business data via API

Developer plan includes a 14-day free trial. Cancel anytime.

Start Free Trial
Washington Business Entity Search — LLCs, Corporations & More | Filed.dev