Mount Vernon is home to 442 people in South Dakota. This skews young, with a median age of 28.8. Four-year degrees are less common here than nationally, at 17% of adults. Renters pay $386 a month at the median. The foreign-born share is 0%. The typical home is worth $164,400, having more than tripled since 2000.
At a glance
Lower income
median household income $60,357, below the US median
US median: $82,259
Younger
median age 28.8
US median: 38.9
Less educated
17% hold a bachelor's degree
US average: 36%
Less affordable
home values up 146%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Mount Vernon
What changed most since 1990
Median home value (2024 dollars)$36,481 → $164,400(+351%)US over the same years: +67%
Homes owned by their occupants81.8% → 55.5%(−26.3 pts)US over the same years: +0.9 pts
Median age36.0 → 28.8(−7.2 years)US over the same years: +6.0 years
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
Veterans by period of service, 2024
Gulf War (2001 or later)27.3%(3)
US avg: 26.4%
Gulf War (1990s)54.5%(6)
US avg: 24.3%
Vietnam era9.1%(1)
US avg: 33.1%
Korean War0%(0)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 11 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Mount Vernon, decade by decade
Mount Vernon 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
377
$43,501
$36,481
10.2%
0.0
2000
477
$67,048
$66,855
11.1%
4.6
2010
462
$74,626
$88,904
12.9%
20.6
2020
461
$56,057
$141,687
15.5%
19.6
2024
442
$60,357
$164,400
17.0%
18.2
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.
