Los Alamos County property tax
Homeowners in Los Alamos County, New Mexico typically pay about 0.55% of their home's value in property tax each year — a median bill of $2,717 on a median home value of $495,800.
Typical effective rate
0.55%
higher than 78% of U.S. counties
Median tax paid
$2,717
per year
Median home value
$495,800
In NM
#17
of 33 ranked counties
At a glance
- Effective rate 0.55% — 42% lower than the U.S. median of 0.94%, and 21% lower than the New Mexico median of 0.70%.
- With vs. without a mortgage — median tax $2,755 for mortgaged homes, $2,645 for homes owned outright.
- State ranking — 17th highest effective rate of 33 ranked New Mexico counties; nationally it sits around the 22th percentile.
Estimate a bill for Los Alamos County
Apply this county's typical effective rate (0.55%) to a home value of your choice.
Frequently asked questions
What is the property tax rate in Los Alamos County, NM?
The typical effective property-tax rate in Los Alamos County is 0.55% of a home's value per year, based on median taxes paid ($2,717) divided by the median home value ($495,800) in the Census ACS 2020–2024 5-year estimates. This is a typical burden for comparison, not a statutory mill rate.
How much is property tax on a typical home in Los Alamos County?
The median owner-occupied home in Los Alamos County is valued at $495,800, and the median real estate tax paid is $2,717 per year. Homes with a mortgage have a median tax of $2,755, versus $2,645 for homes without one.
How does Los Alamos County compare to the rest of New Mexico?
Los Alamos County's effective rate is 21% lower than the New Mexico median, ranking 17th of 33 ranked counties in the state.
Compare nearby New Mexico counties
Counties ranked closest to Los Alamos County by in-state effective rate. Open the comparison tool or see all New Mexico counties.
| In-state | County | Effective rate | Median tax |
|---|---|---|---|
| 14 | Curry County | 0.59% | $1,017 |
| 15 | San Miguel County | 0.57% | $1,081 |
| 16 | Otero County | 0.55% | $902 |
| 18 | Luna County | 0.54% | $687 |
| 19 | Lincoln County | 0.53% | $1,246 |
| 20 | Colfax County | 0.52% | $867 |
Official data & resources for Los Alamos County
- Los Alamos County Census profile (data.census.gov) — housing, value and tax figures for this county.
- Table B25103 for Los Alamos County — median real estate taxes paid (the source for the tax figures above).
- Table B25077 for Los Alamos County — median home value.
- Federal forms & is property tax deductible? — IRS Pub 530, Schedule A and the SALT cap, plus your state tax agency.
Finding your exact bill
Your county or municipal assessor (sometimes called the appraisal district, property appraiser, or tax collector) sets the assessed value and the exact millage that produces your bill. Search for "[county name] [state] assessor" or "property tax" on an official .gov site.
Figures on this page are Census survey medians for the whole county (2020–2024 5-year), not an assessment of any individual property. Rates, exemptions and assessment practices vary by municipality and school district within a county.