King County encompasses Seattle and is the 13th-most populous county in the US, spending $3B+ annually on transit (Metro Transit), public health, construction, and IT. King County Metro is one of the largest public bus systems in the US.
King County historically awards the following percentages of eligible contract dollars to small and disadvantaged businesses. These figures reflect agency performance against statutory goals and represent real contract opportunities for certified firms.
King County is an active buyer in the following categories. These represent the highest-volume procurement areas based on historical award data.
The contractors who win King County contracts consistently aren't just responding to solicitations — they're known quantities before the solicitation is published. Here's how to build that position.
Register as a King County vendor at kingcounty.gov/depts/finance-business-operations/procurement
Apply for King County Small Business or MWBE certification for contract preferences
Target King County Metro separately — it has major transit capital programs
Monitor King County solicitations at kingcounty.gov/procurement for active RFPs
Attend King County's annual small business outreach events in Seattle
These NAICS codes represent the highest-volume procurement categories at King County. Register these codes in your SAM.gov profile to appear in agency vendor searches.
King County vendor portal + SBE/MWBE certification. Ensure your SAM.gov registration is active and includes the NAICS codes that match King County's primary procurement categories before reaching out directly.
King County awards 20% of eligible contract dollars to small businesses. All applicable SBA certifications are recognized.
King County spends approximately $3B+ annually on contracts. The total agency budget is $4B+, with procurement representing the contract-deliverable portion of that spending.
Monitor SAM.gov and filter by King County as the contracting agency. Set up email notifications for your NAICS codes from this agency. BidEdgeHQ monitors SAM.gov and state portals in real time, scoring every King County solicitation against your ICP profile and delivering WhatsApp alerts for high-match opportunities.