Vacant land has no street (situs) address. The Butte County Assessor's plat maps and map books can determine its approximate geographical location. Improved properties frequently (but not always) will bear a street address, making it easier to determine the general location. Exact boundary lines of a property can be determined only by a survey of the property undertaken at the purchaser's expense.
Butte County Data Search - More information on each parcel is available through Butte County's Geographic Information Systems website.