Los Alamos County, NM property tax
Census ACS 2023 5-year estimates · updated 2026-09-20
The median effective property tax rate in Los Alamos County is 0.57%, below the New Mexico median of 0.72% and below the national median of 0.98%. The median homeowner pays $2,591 a year on a home worth $452,500.
- Effective rate
- 0.57%
- Median annual bill
- $2,591
- Median home value
- $452,500
- Rank in New Mexico
- 12of 32
Estimated annual bill by home value
| Home value | Estimated bill | Per month |
|---|---|---|
| $200,000 | $1,140 | $95 |
| $300,000 | $1,710 | $142 |
| $400,000 | $2,280 | $190 |
| $500,000 | $2,850 | $238 |
| $750,000 | $4,275 | $356 |
| $1,000,000 | $5,700 | $475 |
Los Alamos County compared with New Mexico and the US
| Area | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Los Alamos County | 0.57% | $2,591 | $452,500 |
| New Mexico median | 0.72% | $1,669 | $232,200 |
| United States median | 0.98% | $2,969 | n/a |
Rates and medians: U.S. Census Bureau, ACS 2023 5-year estimates, tables B25103 and B25077. Effective rate is median taxes paid divided by median owner-occupied home value.
Frequently asked questions
What is the property tax rate in Los Alamos County, NM?
The median effective property tax rate in Los Alamos County is 0.57% of home value, below the New Mexico median of 0.72% and below the national median of 0.98%. The median homeowner pays $2,591 a year on a median home value of $452,500 (Census ACS 2023 5-year).
How much is property tax on a $400,000 house in Los Alamos County?
About $2,280 per year at the county's median effective rate of 0.57%, before exemptions. The exact bill depends on the city, school district and special districts that serve the parcel, so treat this as a planning estimate.
How does Los Alamos County compare with the rest of New Mexico?
Los Alamos County ranks 12 of 32 New Mexico counties by effective rate. The New Mexico median is 0.72% and the median bill is $1,669.