County administrative profile
Big Horn County
Montana • FIPS 30003
Big Horn County Treasurer / Montana Department of Revenue Property Assessment Division serves as the identified local county assessor for this jurisdiction. Its public resources are the practical starting point for confirming parcel details, assessed value, tax account information, and the correct route for a valuation question or exemption filing.
Responsible office
Big Horn County Treasurer / Montana Department of Revenue Property Assessment Division
- Authority
- County Assessor
- Phone
- Big Horn County Treasurer: 406-665-9837; Montana DOR valuation questions: 406-426-7027
- In-person address
- Big Horn County Treasurer, 121 W. 3rd St., Room 204, Hardin, MT 59034; mailing: P.O. Box 908, Hardin, MT 59034
- Public hours
- Monday–Friday, 8:00 a.m.–5:00 p.m.; closed noon–1:00 p.m. and holidays.
Official channels
Go straight to the local source
Use the channel that matches your task. Parcel research, map review, and payment collection may be handled by different offices or platforms within the same county.
Agency website
The primary public homepage identified for this appraisal or assessment authority.
Open official resourceProperty search
Search the active parcel or property account lookup when you need an owner, situs, or assessment record.
Open official resourceGIS parcel map
Open the interactive map when location, parcel boundaries, or neighboring property context matters.
Open official resourceTax collection
Use the identified collection channel for bills, balances, receipts, and payment instructions.
Open official resourceWhat to do next
A practical path from question to official record
Identify the parcel
Start with the property search or GIS map and capture the account, parcel, or situs information shown by the county.
Confirm the timeline
Review the local mailing, payment, exemption, and valuation-review guidance before a statutory window closes.
Keep proof
Save notices, account numbers, submissions, payment confirmations, and correspondence for your transaction file.