Los Alamos County, New Mexico property tax

Median property tax, home value and effective rate (Census 2020–2024)

Updated Oct 17, 2026, 1:57 AM ET
Effective property tax rate
0.55%

Homeowners in Los Alamos County, New Mexico paid a median $2,717 a year in property tax on a median home worth $495,800, an effective rate of about 0.55% (Census 2020–2024).

Census ACS 2020–2024 5-year medians

#17 lowest of 33New Mexico counties by effective rate

0.70%New Mexico statewide · US 0.94%
Median tax paid
$2,717
per year, 2020–24
Median home value
$495,800
owner-occupied
Effective rate
0.55%
tax ÷ value
Tax vs. income
1.8%
of $147,139 median household income
Owner costs
$2,315/mo
median with a mortgage, incl. tax & insurance

How Los Alamos County compares

Effective rate (median tax ÷ median value)

Los Alamos County0.55%
New Mexico0.70%
United States0.94%

Median tax paid per year

Los Alamos County$2,717
New Mexico$1,731
United States$3,119

Tax on a home here

At the local 0.55% effective rate

Home valueEstimated yearly taxPer month
$150,000$822$69
$250,000$1,370$114
$350,000$1,918$160
$500,000$2,740$228

Cities and towns in Los Alamos County

PlaceMedian taxMedian valueRate
Los Alamos$2,749$501,8000.55%
White Rock$2,681$500,7000.54%

Buying a home in Los Alamos County? 2026 loan limits

Related

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25103 (median real estate taxes paid), B25077 (median home value), B25003, B25088, B19013 and B01003. These are 2020–2024 medians reported by owner-occupants, not 2026 tax bills or official mill rates. The effective rate here is median tax ÷ median home value. Actual bills depend on assessed value, exemptions (homestead, senior, veteran) and local levies. Check with your county assessor or treasurer. Not tax advice.

Frequently asked questions

What is the property tax rate in Los Alamos County, New Mexico?

Homeowners in Los Alamos County, New Mexico paid a median $2,717 a year in property tax on a median home worth $495,800, an effective rate of about 0.55% (Census 2020–2024).

How much is property tax on a $300,000 home in Los Alamos County?

About $1,644 a year ($137 a month) at the 0.55% median effective rate. Your bill depends on assessed value and exemptions.

Is Los Alamos County property tax high?

It ranks #17 lowest of 33 New Mexico counties. The state median effective rate is 0.70% and the US rate is 0.94%.

Where do I pay property tax in Los Alamos County?

Bills are issued and collected by the Los Alamos County treasurer or tax collector, based on values set by the county assessor.