Spencer is a city of 19 people in Idaho. The median age is 66.3, about 27 years above the US median. 0% of adults hold a bachelor's degree, below the 36% national rate. 42% of people here were born outside the United States. Owners hold 92% of the housing stock. There are 19 fewer people here than in 2000.
At a glance
Lower income
median household income $74,219, below the US median
US median: $82,259
Older
median age 66.3
US median: 38.9
Less educated
0% hold a bachelor's degree
US average: 36%
Owner-heavy
92% owner-occupied
US average: 65%
Unique to this place
What stands out about Spencer
What changed most since 1990
Median household income (2024 dollars)$11,998 → $74,219(+519%)US over the same years: +14%
Poverty rate42.9% → 5.3%(−37.6 pts)US over the same years: −0.8 pts
Hispanic share0.0% → 42.1%(+42.1 pts)US over the same years: +9.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Over time
Spencer, decade by decade
Spencer population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
7
$11,998
$102,003
0.0%
0.0
2000
38
$39,849
$97,094
0.0%
24.1
2010
37
$27,321
$25,894
5.1%
0.0
2020
31
–
–
0.0%
37.1
2024
19
$74,219
–
0.0%
67.9
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
