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CITY · 2020 ACS

Spencer

Idaho · 31 residents · 1.142 sq mi
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The short version

Population has fallen 18% since 2000, a loss of 7 residents. 0% of adults hold a bachelor's degree or higher, below the national rate of 33%. With a median age of 44.3, the population is older than the US median of 38.8.

At a glance
Older
median age 44.3
US median: 38.8
Less educated
0% hold a bachelor's degree
US average: 33%
Owner-heavy
100% owner-occupied
US average: 63%
Section 01

Population & growth

Total population
31
−18%since 2000
from 38 in 2000
1990 – 2025
Population density
27 / sq mi
−18%since 2000
from 33 / sq mi in 2000
US average: 280
Median age
44.3
−20%since 2000
from 55.3 in 2000
US average: 38.8
Population, 1990 – 2024
4132332411990201020202024Spencer
202419
1990201020202024
Section 02

Income & economy

Per capita income
$27,708
+137%since 2000
from $11,711 in 2000
US average: $35,364
Households earning $100K+
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 43.9%
Poverty rate
15.4%
−41.4 ptssince 2000
from 56.8% in 2000
US average: 12.8%
Section 03

Housing

Owner-occupied
100.0%
+17.6 ptssince 2000
from 82.4% in 2000
0.0% rent
RELATED:See current rent listings in Spencer on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic89.5%(34)
Black0%(0)
Hispanic / Latino7.9%(3)
Asian0%(0)
Other0%
Diversity Score18.6%(7)
2020
White, non-Hispanic83.9%(26)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other0%(0)
Diversity Score0%(0)
Diversity Score
0
−100%since 2000
from 19 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
0.0%
Unchangedsince 2000
from 0.0% in 2000
US average: 32.9%
High school or higher
61.5%
−12.5 ptssince 2000
from 74.1% in 2000
US average: 88.5%
Graduate degree
0.0%
Unchangedsince 2000
from 0.0% in 2000
US average: 12.7%
Section 06

Commute & transportation

No vehicle available
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
100.0%
+100.0 ptssince 2012
from 0.0% in 2012
US average: 5.4%
Labor force participation
30.8%
+30.8 ptssince 2011
from 0.0% in 2011
US average: 63.4%
Section 08

People & community

Male
38.5%
+9.3 ptssince 2009
from 29.2% in 2009
Female
61.5%
−9.3 ptssince 2009
from 70.8% in 2009
Foreign born
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 13.5%
Uninsured
30.8%
−51.6 ptssince 2013
from 82.4% in 2013
US average: 8.8%
Drill deeper

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Pop 29
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Pop 30
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Pop 28
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Head to head

Compare Spencer to nearby cities

SPENCER VS
Rexburg
Income$50,617
Home value$395,100
Population40,334+138983%
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SPENCER VS
Idaho Falls
Income$73,110
Home value$335,500
Population71,785+247434%
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SPENCER VS
Ammon
Income$86,121
Home value$381,800
Population20,119+69276%
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SPENCER VS
Blackfoot
Income$64,032
Home value$262,500
Population13,361+45972%
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Frequently asked

How many people live in Spencer, Idaho?

Spencer, Idaho has about 31 residents according to the 2020 American Community Survey.

How educated are people in Spencer, Idaho?

About 0.0% of adults age 25 and over in Spencer, Idaho hold a bachelor's degree or higher.

What is the poverty rate in Spencer, Idaho?

About 15.4% of people in Spencer, Idaho live below the federal poverty line.

Has Spencer, Idaho grown since 1990?

Yes, Spencer, Idaho has grown since 1990. The population has added about 24 residents, a change of about 343 percent over that period.

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

How we source and harmonize this data →