Tax Lien
Statute: Colo. Rev. Stat. § 39-11-101 County Held Liens (Endorsement & OTC) Available
Colorado Tax Sale Auctions & OTC Lands
Colorado auctions tax lien certificates online in autumn. Investors earn statutory interest pegged to the Fed discount rate. Unsold liens can be bought directly OTC. Explore all 64 counties below for auction schedules, online bidding portals, and over-the-counter purchases.
State Legal Rules
Statutory Return: 9% Over Federal Reserve Discount Rate (typically 12-15%)
Redemption: 3 Years (Post-Tyler v. Hennepin Fair Market Deed Rules)
Primary Platform: RealAuction
All 64 Counties in Colorado
Click any county for direct platform links, required deposit amounts, and lands available lists.
El Paso County
Pop: 744.215
Platform: RealAuction
Official: El Paso County Treasurer
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Denver County
Pop: 716.577
Platform: RealAuction
Official: Denver County Treasurer
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Arapahoe County
Pop: 656.061
Platform: RealAuction
Official: Arapahoe County Treasurer
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Jefferson County
Pop: 576.366
Platform: RealAuction
Official: Jefferson County Treasurer
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Adams County
Pop: 533.365
Platform: RealAuction
Official: Adams County Treasurer
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Douglas County
Pop: 383.906
Platform: RealAuction
Official: Douglas County Treasurer
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Larimer County
Pop: 370.771
Platform: RealAuction
Official: Larimer County Treasurer
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Weld County
Pop: 359.442
Platform: RealAuction
Official: Weld County Treasurer
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Boulder County
Pop: 326.831
Platform: RealAuction
Official: Boulder County Treasurer
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Pueblo County
Pop: 169.422
Platform: RealAuction
Official: Pueblo County Treasurer
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Mesa County
Pop: 159.681
Platform: RealAuction
Official: Mesa County Treasurer
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Broomfield County
Pop: 76.860
Platform: RealAuction
Official: Broomfield County Treasurer
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Garfield County
Pop: 62.707
Platform: RealAuction
Official: Garfield County Treasurer
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La Plata County
Pop: 56.407
Platform: RealAuction
Official: La Plata County Treasurer
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Eagle County
Pop: 54.381
Platform: RealAuction
Official: Eagle County Treasurer
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Fremont County
Pop: 50.318
Platform: RealAuction
Official: Fremont County Treasurer
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Montrose County
Pop: 44.156
Platform: RealAuction
Official: Montrose County Treasurer
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Delta County
Pop: 31.746
Platform: RealAuction
Official: Delta County Treasurer
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Summit County
Pop: 30.465
Platform: RealAuction
Official: Summit County Treasurer
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Morgan County
Pop: 29.524
Platform: RealAuction
Official: Morgan County Treasurer
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Elbert County
Pop: 28.806
Platform: RealAuction
Official: Elbert County Treasurer
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Montezuma County
Pop: 26.531
Platform: RealAuction
Official: Montezuma County Treasurer
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Routt County
Pop: 25.064
Platform: RealAuction
Official: Routt County Treasurer
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Teller County
Pop: 24.617
Platform: RealAuction
Official: Teller County Treasurer
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Logan County
Pop: 20.619
Platform: RealAuction
Official: Logan County Treasurer
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Chaffee County
Pop: 20.617
Platform: RealAuction
Official: Chaffee County Treasurer
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Otero County
Pop: 18.136
Platform: RealAuction
Official: Otero County Treasurer
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Park County
Pop: 18.117
Platform: RealAuction
Official: Park County Treasurer
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Gunnison County
Pop: 17.321
Platform: RealAuction
Official: Gunnison County Treasurer
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Alamosa County
Pop: 16.655
Platform: RealAuction
Official: Alamosa County Treasurer
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Pitkin County
Pop: 16.640
Platform: RealAuction
Official: Pitkin County Treasurer
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Grand County
Pop: 15.935
Platform: RealAuction
Official: Grand County Treasurer
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Las Animas County
Pop: 14.348
Platform: RealAuction
Official: Las Animas County Treasurer
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Archuleta County
Pop: 14.189
Platform: RealAuction
Official: Archuleta County Treasurer
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Moffat County
Pop: 13.327
Platform: RealAuction
Official: Moffat County Treasurer
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Prowers County
Pop: 11.751
Platform: RealAuction
Official: Prowers County Treasurer
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Rio Grande County
Pop: 11.188
Platform: RealAuction
Official: Rio Grande County Treasurer
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Yuma County
Pop: 9862
Platform: RealAuction
Official: Yuma County Treasurer
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Clear Creek County
Pop: 9147
Platform: RealAuction
Official: Clear Creek County Treasurer
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San Miguel County
Pop: 7868
Platform: RealAuction
Official: San Miguel County Treasurer
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Conejos County
Pop: 7521
Platform: RealAuction
Official: Conejos County Treasurer
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Lake County
Pop: 7365
Platform: RealAuction
Official: Lake County Treasurer
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Huerfano County
Pop: 7055
Platform: RealAuction
Official: Huerfano County Treasurer
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Kit Carson County
Pop: 6994
Platform: RealAuction
Official: Kit Carson County Treasurer
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Saguache County
Pop: 6688
Platform: RealAuction
Official: Saguache County Treasurer
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Rio Blanco County
Pop: 6569
Platform: RealAuction
Official: Rio Blanco County Treasurer
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Gilpin County
Pop: 5926
Platform: RealAuction
Official: Gilpin County Treasurer
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Bent County
Pop: 5681
Platform: RealAuction
Official: Bent County Treasurer
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Crowley County
Pop: 5636
Platform: RealAuction
Official: Crowley County Treasurer
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Custer County
Pop: 5534
Platform: RealAuction
Official: Custer County Treasurer
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Lincoln County
Pop: 5480
Platform: RealAuction
Official: Lincoln County Treasurer
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Ouray County
Pop: 5176
Platform: RealAuction
Official: Ouray County Treasurer
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Washington County
Pop: 4855
Platform: RealAuction
Official: Washington County Treasurer
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Phillips County
Pop: 4476
Platform: RealAuction
Official: Phillips County Treasurer
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Costilla County
Pop: 3628
Platform: RealAuction
Official: Costilla County Treasurer
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Baca County
Pop: 3344
Platform: RealAuction
Official: Baca County Treasurer
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Dolores County
Pop: 2513
Platform: RealAuction
Official: Dolores County Treasurer
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Sedgwick County
Pop: 2299
Platform: RealAuction
Official: Sedgwick County Treasurer
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Cheyenne County
Pop: 1727
Platform: RealAuction
Official: Cheyenne County Treasurer
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Kiowa County
Pop: 1384
Platform: RealAuction
Official: Kiowa County Treasurer
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Jackson County
Pop: 1309
Platform: RealAuction
Official: Jackson County Treasurer
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Mineral County
Pop: 944
Platform: RealAuction
Official: Mineral County Treasurer
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San Juan County
Pop: 802
Platform: RealAuction
Official: San Juan County Treasurer
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Hinsdale County
Pop: 765
Platform: RealAuction
Official: Hinsdale County Treasurer
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How Tax Sales Operate in Colorado
Under Colo. Rev. Stat. § 39-11-101, delinquent property taxes follow a precise statutory timeline. Understanding the difference between bidding on Tax Lien and purchasing over-the-counter is essential for investors.
Bidding & Auction Process
Auctions are conducted online via RealAuction or in person by the County Treasurer. Winning bidders are required to tender payment via wire transfer, certified check, or ACH within statutory deadlines.
Over-The-Counter Lands (County Held Liens (Endorsement & OTC))
In Colorado, unsold properties or tax lien certificates become available as County Held Liens (Endorsement & OTC). Buyers can purchase these parcels directly over-the-counter without attending an open outcry auction.
Investor Auction Liquidity
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