Land · Wyoming tax sale guide

Sweetwater County tax lien sales, Wyoming

Verified

Sweetwater County publishes the most concrete 2026 logistics of the five counties. Its sale was set for Thursday, August 6, 2026 at 9:00 AM with check in at 8:00 AM, away from the courthouse at the Western Wyoming College Green River Campus. The county no longer provides a packet of the property taxes for sale at the sale, and it told buyers to download the current list from the county website the day before the sale or find the list in the Green River Star newspaper edition of July 23, 2026. Its tax sale list heading states that the amounts include 20 dollars for advertising, with an additional 20 dollars for a certificate of purchase collected at the sale. Buyers must be 18 years of age to attend.

Selling office: Sweetwater County Treasurer, 80 W. Flaming Gorge Way, Green River, WY 82935, Phone: (307) 872-3970

Next sale: The Sweetwater County Tax Sale was held on Thursday, August 6, 2026 at 9:00 AM, with check in at 8:00 AM, at the Western Wyoming College Green River Campus.. The date, time, check in and venue appear at the top of the county Tax Sales and Redemptions page, with links on the same page to the August 6, 2026 property tax list and the pre-registration form.

For the next sale, file the pre-registration application before the noon deadline on the day before the sale, download the final list the day before, and bring a check, because payment is taken at the sale only.

Dates and deadlines

Sources: Tax Sales and Redemptions, Sweetwater County. Property Tax Payments and Delinquent Notices, Sweetwater County. Confirm with the selling office before relying on any date on this page: sales move, terms change, and parcels are pulled up to sale day.

Research Sweetwater County parcels before you bid

A sale list gives you the parcels, the date, and the opening terms. It does not give you the owner, the value, or the rest of the picture: liens, foreclosure status, and parcel history. PropertyRadar is the data platform for that layer. It carries owner records, assessed and market values, foreclosure and tax data, and property history for parcels across Sweetwater County, searchable by address, owner, or county, including parcels that never reach a sale list.

Open a PropertyRadar accountSee plans and pricing

Pine and Brass is a PropertyRadar partner. If you open an account through these links, we may earn a commission; it does not change the price you pay.

How Wyoming tax lien sales work

• Taxes fall delinquent in halves. Half the tax is payable November 10 and the rest the following May 10; a balance left unpaid bears interest at 18 percent per annum until paid or collected, and taxes on real property are a perpetual lien against everyone but the United States and the state (W.S. 39-13-108(b) and (d)(i)).
• The treasurer advertises the sale. Notice of the sale runs by publication once a week for three weeks in a legal newspaper in the county, the first publication at least four weeks before the day of sale and before the first week in September; where the county has no legal newspaper, the notice is posted at the courthouse door and in three public places at least 30 days ahead (W.S. 39-13-108(e)(ii)(A)).
• The sale is held at the courthouse. Sales run at the county courthouse or county building between 9 a.m. and 5 p.m. and continue from day to day, Sundays excepted, until all the land is sold. There is no bidding on price: any person who offers to pay the whole amount of taxes, interest, penalties and costs due on a parcel is the purchaser, and the purchaser pays on the spot or is disqualified and the parcel is offered again (W.S. 39-13-108(e)(iii)(A) and (B)).
• A certificate of purchase issues. On payment of the certificate fee the treasurer makes out and delivers a certificate of purchase describing the property and the taxes and costs paid; the certificate may be assigned by endorsement, and the holder takes subject to any special assessments for local or public improvements (W.S. 39-13-108(e)(iii)(C) and (E)).
• Redemption runs four years. The owner redeems at the treasurer by paying the amount for which the property sold, a penalty of 3 percent, interest at 15 percent per annum, and a redemption fee; a purchaser who pays later taxes on the parcel earns the same 15 percent on those payments (W.S. 39-13-110).
• The deed window opens at four years and closes at six. A holder applies to the treasurer for a tax deed not less than four nor more than six years from the date of the original sale, proving the statutory notice: personal service at least three months before the application on anyone in actual possession and on the person in whose name the property was taxed, or publication once a week for three weeks on the statutory timing, plus certified or registered mail to the record owner and any mortgagees (W.S. 39-13-108(e)(v)).
• The county path runs beside the private one. Property nobody buys is bid in for the county; the commissioners may sell and assign a county certificate at public or private sale at any time, and four years after the sale the treasurer deeds unredeemed county parcels to the county itself, on at least 60 days notice from the county clerk, after which the commissioners may sell the land at private sale (W.S. 39-13-108(e)(iii)(D) and (e)(iv)).

How buying works in Sweetwater County

You must be 18 years of age to attend the tax sale. Everyone attending must pre-register themselves and anyone that will be bidding for them. All applications must be in the Treasurer office no later than 12:00 pm on August 5, 2026, and the county will not register anyone or any additional bidders at the sale. The county tax sale page does not publish a drawing or rotation rule for choosing among buyers who want the same parcel.

• Where buying happens At the county treasurer sale each summer. The day, the room, and the registration rules are the county's own, and each county page on this site names them from that treasurer's published pages.
• No auction in price The amount due is the price, set by the statute. Where two buyers want the same parcel, the treasurer's published rules decide who pays: several Wyoming counties draw lots or work down a rotation of registered buyers. The registration statement at the top of each county page carries the rule that county publishes, or says plainly that the county does not publish one.
• Payment is immediate A purchaser who does not pay the treasurer all amounts due at once is disqualified, and the parcel is offered again on the spot (W.S. 39-13-108(e)(iii)(B)). Accepted payment forms differ by county and are stated on each county page.

Terms: what a bid actually costs

Parcels that receive no bids

The county tax sale page does not publish what happens to a parcel that no attending purchaser buys, and it does not publish a later sale or assignment practice for county held certificates. Under Wyoming law a parcel nobody buys is bid in for the county, the treasurer deeds unredeemed county held certificates to the county four years after the sale, and the commissioners may then sell that land at private sale.

Before you bid

• Recheck the list on sale morning Owners redeem and parcels are pulled right up to the sale. The list in the newspaper notice is the starting list, not the final one; work from the treasurer posted list and expect it to shrink.
• Price the wait, not just the rate The certificate pays 15 percent plus the 3 percent penalty only if the owner redeems. If nobody redeems, the money is out for at least four years before a deed can be applied for, and the application window closes at six years from the sale.
• Know what the deed gives you A treasurer deed is prima facie evidence of title and entitles the grantee to possession, but it is subject to special assessments, and an action to recover property sold for taxes may be brought within six years after the sale. Budget for your own title work on any parcel that matters (W.S. 39-13-108(e)(vii)).

Every Wyoming county in this set

One page per county, each verified against the county's own publications and the current text of W.S. 39-13-108 and 39-13-110. Wyoming treasurers sell liens county by county each summer; this set is the 10 largest counties.

• Laramie County tax lien sales
• Natrona County tax lien sales
• Campbell County tax lien sales
• Sweetwater County (this page)
• Albany County tax lien sales
• Park County tax lien sales
• Sheridan County tax lien sales
• Fremont County tax lien sales
• Teton County tax lien sales
• Lincoln County tax lien sales

Keep going

Once a deadline puts you in a sale, the Land Investor Due Diligence Toolkit is the checklist and bid worksheet to run on each parcel before you bid. The same desk runs Florida tax deed sales, Texas tax sales, Pennsylvania tax sales, Georgia tax sales, North Carolina tax foreclosure sales, Ohio tax foreclosure sales, Illinois tax lien sales, Michigan tax foreclosure sales, Arizona tax lien sales, California tax defaulted property sales, Colorado tax lien sales, South Carolina tax sales, Indiana tax lien sales, Tennessee delinquent tax sales, Wisconsin tax deed sales, Missouri tax sales, New Jersey tax lien sales, Maryland tax lien sales, West Virginia tax sales, Virginia tax sales, Oklahoma tax resale, Kansas tax foreclosure sales, Arkansas tax-delinquent land sales, Alabama tax sales, Kentucky certificate of delinquency sales, Mississippi tax land sales, Nevada tax deed sales, New Mexico delinquent property tax sales, Iowa tax lien sales, Nebraska tax certificate sales, Minnesota tax-forfeited land sales, Utah final tax sales, Washington tax foreclosure sales, Oregon tax foreclosure sales, Connecticut tax sales, Massachusetts tax title sales, Rhode Island tax sales, Vermont tax sales, New Hampshire tax lien sales, Maine tax lien sales, Delaware tax sales, Louisiana tax sales, Idaho tax deed sales, Montana tax lien assignments, Wyoming tax lien sales and South Dakota tax certificate sales, and the proven New York season, with the live membership, sits in the NY tax sale hub.