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COUNTY · 2000 CENSUS

Los Alamos County

New Mexico · 18,343 residents · 109.123 sq mi
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The short version

Los Alamos County is significantly wealthier than the US average, with a median household income of $78,993. Population has held roughly steady since 1990. 60% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value has risen by half since 1990, reaching $213,000. With a median age of 40.8, the population is older than the US median of 35.2. Households here earn about 131% more than the New Mexico median.

At a glance
Wealthier
above the US median
US median: $42,589
Older
median age 40.8
US median: 35.2
More educated
60% hold a bachelor's degree
US average: 24%
Less affordable
home values up 27%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

18,343
+1%since 1990
from 18,115 in 1990
1990 – 2025
168 / sq mi
+1%since 1990
from 166 / sq mi in 1990
US average: 242
40.8
+8%since 1990
from 37.8 in 1990
US average: 35.2
Population, 19902024
18K18K19K19K20K1990201020202024Los Alamos County
202419K
1990201020202024
Section 02

Income & economy

$78,993
+9%inflation adjusted, since 1990
from $54,801 in 1990
US average: $42,589
1990 – 2024
$34,646
+51%since 1990
from $22,900 in 1990
US average: $21,522
2.9%
+0.5 ptssince 1990
from 2.4% in 1990
US average: 12.4%
Section 03

Housing

$213,000
+27%inflation adjusted, since 1990
from $127,700 in 1990
US average: $120,530
1990 – 2024
$666
+8%inflation adjusted, since 1990
from $467 in 1990
US average: $602
78.6%
+4.2 ptssince 1990
from 74.4% in 1990
21.4% rent
2.7
+16%since 1990
from 2.3 in 1990
1990 – 2024
RELATED:See current rent listings in Los Alamos County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic94.4%(17,098)
Black0.3%(58)
Hispanic / Latino10.7%(1,933)
Asian2.5%(448)
Diversity Score32.8%(5,937)
2000
White, non-Hispanic82.1%(15,051)
Black0.3%(63)
Hispanic / Latino11.7%(2,155)
Asian3.8%(690)
Diversity Score35.2%(6,460)
35
+7%since 1990
from 33 in 1990
1990 – 2024
Section 05

Education

60.5%
+7.1 ptssince 1990
from 53.4% in 1990
US average: 24.4%
High school or higher
96.3%
+1.7 ptssince 1990
from 94.7% in 1990
US average: 80.3%
36.0%
+6.4 ptssince 1990
from 29.7% in 1990
US average: 8.8%
Section 06

Commute & transportation

9.5 min
−34%since 1990
from 14.3 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in Los Alamos County, New Mexico?

Los Alamos County, New Mexico has about 18,343 residents according to the 2000 Census.

What is the median household income in Los Alamos County, New Mexico?

The typical household in Los Alamos County, New Mexico earns about $78,993 a year. Half of households make more than that, and half make less.

Is Los Alamos County, New Mexico expensive?

In Los Alamos County, New Mexico, the median home is worth about $213,000, and the typical rent is about $666 a month.

How educated are people in Los Alamos County, New Mexico?

About 60.5% of adults age 25 and over in Los Alamos County, New Mexico hold a bachelor's degree or higher.

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

About 2.9% of people in Los Alamos County, New Mexico live below the federal poverty line.

Has Los Alamos County, New Mexico grown since 1990?

Yes, Los Alamos County, New Mexico has grown since 1990. The population has added about 228 residents, a change of about 1 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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