Vendor Information

Columbia County Information

Department Billing/Shipping Information

Contract Terms & Conditions

Contact (608) 742-9645 or for Tax Exemption Certificate and Letter of Credit


The County’s email domain has changed to  Please update any email addresses used to send invoices.  For example, has changed to


Columbia County was infiltrated by a phishing scheme.  If you receive an email with the subject 'Payment Advise' with a payment attachment, please disregard.  This is not from Columbia County.

If you have any questions regarding an ACH payment, please contact the Accounting Department..



As a vendor, you may receive fraudulent purchase orders and bid notices from a scammer claiming to be Columbia County Government.

As a precaution, we recommend you take the following steps:

  1. Verify the documents came directly from Columbia County
  2. a.  Look up phone numbers
    b.  Verify the shipping address - on our website we have department addresses listed
    c.  Email our AP division for verification or call
  3. Compare the information on the documents to your customer records for Columbia County
  4. a.  Contacts
    b.  Addresses
    c.  Email addresses


Welcome to the Columbia County vendor information page.  Here you will see any open bids & proposals, register on Onvia DemandStar to be notified of any future bid opportunities and sign up to receive invoice payments through direct deposit.

Open Bids & Proposals

Administrative Services - Due 5/23/24 at 9 a.m.

Pharmacy Services - Due 5/23/24 at 9 a.m.

Road Surface Crack Route and Seal - Due 6/5/24 at 10 a.m.

Sodium Chloride Material Solicitation - Due 6/5/24 at 10 a.m.

Senior Dining Program-Amended - Due 6/6/24 at 2 p.m.

Sober Living Housing - Due 6/20/24 at 9 a.m. 

Direct Deposit of Vendor Payments (ACH Credits)

As a vendor, you can choose the option of receiving your invoice payments through ACH (Automated Clearing House).  Our payment to you will be deposited directly into an account specified by you.  Visit the Direct Deposit of Vendor Payments page for more information.

Vendor Registration

To ensure notification of future bid opportunities with Columbia County, vendors must be registered.  It is the bidder's responsibility to register with Columbia County via DemandStar to receive future amendments, questions, revisions, etc., prior to bid/proposal opening.

Your subscription offers your company a number of important benefits:

  • Free access to procurement opportunities from all Wisconsin Association of Public Purchasers (WAPP) members
  • Automatic and immediate notification of procurement opportunities
  • Access to bidding documents, addenda, bid results 24 hours a day, 7 days a week

Additionally, your subscription offers services covering local, state, regional, or national geographic territories, however, vendors are not required to pay for access to participating WAPP member solicitations.

Important note:  Vendors must select commodity codes after registering with DemandStar.  You will receive an email notification for each bid/quote, logged by a WAPP agency, referencing the commodity codes you have selected.  Additionally, you have the ability to search for bids/quotes logged by a DemandStar agency.

Follow the instructions on how to register.

Click here to register.

For questions regarding bids, contact 608.429.2136 (Highway Department bids) or 608.742.9658 (all other bids).  For more information, contact Onvia Supplier Services at 1.800.711.1712.