Property tax in Adams County, Colorado
In Adams County, the property tax bill comes from the Adams County Treasurer and Public Trustee, Treasurer Division. The 2026 taxes payable 2027 bill is paid in 3 installments, and the next one is due February 28, 2027. You can look up and pay the bill on the county's own payment page. Taken from Adams County's own pages, checked September 23, 2026.
The median property tax bill in Adams County, Colorado is $2,962 a year, which is about 0.61% of the county's median home value of $484,200. That effective rate is higher than the typical Colorado county (0.39%) and lower than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.
Who sends the property tax bill in Adams County, and how do you pay it?
The bill comes from the Adams County Treasurer and Public Trustee, Treasurer Division. The value it is based on is set by a separate office, the Adams County Assessor's Office, which is who to ask if the value looks wrong. For how to look up and pay the bill, go to the county's own payment information.
Colorado taxes are paid a year behind: the bill mailed in January 2027 is for 2026 taxes. One bill covers the county, school district, city or town and special districts, so there is no separate city property tax bill. The Assessor revalues all real property every two years, in odd-numbered years, so new values arrive with the May 2027 notice of value.
When are property taxes due in Adams County?
For the 2026 taxes payable 2027 bill, Adams County splits the bill into 3 payments, the first due February 28, 2027 and the last June 15, 2027. Late payments are charged interest of 1% a month under state law, with part of a month counted as a whole month: from March 1 on a late first half, from June 16 on a late second half, and from May 1 when the whole bill is paid in one payment after April 30. Delinquent notices are mailed in July, unpaid taxes are advertised in September, and unpaid taxes go to the online tax lien sale in the fall; paying by the end of October avoids the sale's added interest and fees.
| Payment | Due | Note |
|---|---|---|
| First half (two-payment option) | February 28, 2027 | February 28, 2027 is a Sunday. State law makes a payment due on a Saturday, Sunday or legal holiday on time if made the next business day, so a payment on Monday, March 1 counts as on time. Payments postmarked by the due date are accepted. |
| Full payment (one-payment option) | April 30, 2027 | Instead of two halves, the whole bill can be paid in one payment by April 30. Only half or full payments are accepted, not partial payments, and a bill of $25 or less must be paid in one payment by April 30. |
| Second half (two-payment option) | June 15, 2027 |
From Adams County's published schedule, checked September 23, 2026. If a date falls on a weekend or holiday, the county's own rules on the next business day apply.
Estimate the property tax on a home in Adams County
Enter a home's market value for a ballpark at Adams County's average effective rate of 0.61% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.
Estimated property tax: $2,954 / year
Property tax in Adams County at a glance
| Measure | Value |
|---|---|
| Median annual property tax | $2,962 |
| Median home value | $484,200 |
| Effective tax rate | 0.61% |
| Typical Colorado county rate | 0.39% |
| National median county rate | 0.81% |
Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.
How does Adams County compare in Colorado?
Among Colorado's 64 counties, Adams County has the highest effective property-tax rate. That places it among the most heavily taxed counties in the state. Nationally, it ranks 2211th of 3135 US counties by effective rate. See every Colorado county ranked.
How much do homeowners in Adams County actually pay?
The median is only the middle bill. Across Adams County's 129,415 owner-occupied homes, 47.2% pay $3,000 or more a year in property tax, 71.8% pay at least $2,000, and 7.5% pay under $800. Another 3.8% report paying no property tax at all, which usually means an exemption covers the whole bill.
| Annual bill | Homes | Share |
|---|---|---|
| Under $800 | 9,694 | 7.5% |
| $800 to $1,499 | 9,479 | 7.3% |
| $1,500 to $1,999 | 12,492 | 9.7% |
| $2,000 to $2,999 | 31,800 | 24.6% |
| $3,000 or more | 61,079 | 47.2% |
| No property tax paid | 4,871 | 3.8% |
Owners with a mortgage pay a median of $3,146 and owners without one pay $2,516. Owners who have paid off a home have usually held it longer, and in states that cap how fast an existing owner's assessment can rise, long-held homes carry lower assessed values. Census table B25103.
How does the Adams County property tax bill compare with local incomes?
The median property tax bill of $2,962 is about 2.6% of the median income of Adams County homeowner households, $115,401 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 68.6% of Adams County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.
Have property taxes gone up in Adams County?
Yes. The median bill went from $1,868 in 2015-2019 to $2,962 in 2020-2024, a 58.6% rise. Over the same span the median home value moved 57.4%, from $307,600 to $484,200.
Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.
Property tax in counties next to Adams County
Adams County borders 7 counties.
| County | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Adams County, CO (this county) | 0.61% | $2,962 | $484,200 |
| Broomfield County, CO | 0.6% | $4,007 | $664,500 |
| Arapahoe County, CO | 0.52% | $2,938 | $561,200 |
| Morgan County, CO | 0.52% | $1,751 | $338,600 |
| Weld County, CO | 0.52% | $2,440 | $471,700 |
| Jefferson County, CO | 0.48% | $3,082 | $637,600 |
| Denver County, CO | 0.45% | $2,751 | $616,000 |
| Washington County, CO | 0.39% | $874 | $226,200 |
How is a home assessed in Adams County?
Colorado assesses homes at 6.8% of market value in every county, Adams County included. How Colorado assesses and reappraises homes.
Is there a homestead exemption in Adams County?
No. Colorado has no general homestead exemption; the closest broad relief is a 10% reduction on the first $700,000 of value for the local government portion, which applies to all residential property. That is the Colorado rule, and it applies in Adams County. Colorado's exemptions and relief programs in full.
Adams County does not add relief programs of its own beyond the Colorado ones (checked September 23, 2026).
How to appeal your Adams County property assessment
In Adams County you appeal to the Adams County Assessor's Office. The deadline: File with the Assessor from May 1 through June 8; appeals postmarked after June 8 are not accepted, and a deadline that falls on a weekend or legal holiday moves to the next business day. If you disagree with the Assessor's decision, mailed by August 15, file with the Adams County Board of Equalization by September 15. A Board decision can be appealed within 30 days to the state Board of Assessment Appeals, district court or binding arbitration. How to file. Checked September 23, 2026 against the official appeal rules.
How Colorado's appeal process works, including the next level if the first one turns you down.
Colorado rules from primary state sources, reviewed September 7, 2026; sources on the Colorado page.
Work out your own numbers
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How much house can I afford?
Your income, debts and down payment against the 28/36 rule lenders actually use, with Adams County's tax rate to hand.
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Mortgage calculator
Monthly payment with principal, interest, tax and insurance, plus what an extra payment saves you.
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Colorado income tax
Brackets, standard deduction and what Colorado actually taxes.
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Sales tax in Adams County
The other local tax: combined state and local rate for this county.
Sources
- Median real estate taxes paid and median home value for Adams County, Colorado: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.