GIS Mapping System

The GIS site is intended to be a general guide to property and land information, and does not represent a survey of real property nor should it be used or referenced to for conveyance of real property, guaranteeing title or making official determinations. Contact the appropriate County Department to obtain original source documents or for official determinations. Click the link below to access Ontonagon County’s GIS Mapping System.

Colligo GIS

Mailing Address Change Form

The Address Change Form is used to change where notices and tax bills are sent. Use the link below to access form. The form can be returned through mail, email, or FAX. All contact information is on the form.

Mailing Address Change Form