Keystone is a town located in Pennington County South Dakota. Keystone has a 2024 population of 240. Keystone is currently declining at a rate of -0.41% annually and its population has decreased by -1.64% since the most recent census, which recorded a population of 244 in 2020.
The average household income in Keystone is $87,333 with a poverty rate of 11.14%. The median age in Keystone is 37 years: 37.5 years for males, and 35.4 years for females.
According to the most recent ACS, the racial composition of Keystone was:
Race | Population | Percentage (of total) |
|---|---|---|
| White | 360 | 89.11% |
| Two or more races | 30 | 7.43% |
| Native American | 9 | 2.23% |
| Other race | 3 | 0.74% |
| Asian | 2 | 0.5% |
| Black or African American | 0 | 0% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
White
Two or more races
Native American
Other race
Asian
Black or African American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 138 | 2.9 | 67.4 | 32.6 |
| Married | 91 | 3.49 | 70.3 | 29.7 |
| Non Family | 36 | 1.17 | 63.9 | 36.1 |
| Female | 7 | 2.14 | 85.7 | 14.3 |
| Male | 4 | 6.25 | 0 | 100 |
3.46
Average Family Size
2.9
Average Household Size
67.4%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Education Attained | Count | Percentage |
|---|---|---|
| 9th to 12th Grade | 28 | 10.81% |
| Associates Degree | 21 | 8.11% |
| Bachelors Degree | 33 | 12.74% |
| Graduate Degree | 12 | 4.63% |
| High School Graduate | 129 | 49.81% |
| Less Than 9th Grade | 4 | 1.54% |
| Some College | 32 | 12.36% |
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 192 | 175 | 42 |
| 2+ Races | 29 | 28 | 0 |
| Hispanic | 26 | 12 | 0 |
| Native American | 9 | 9 | 0 |
| Other Race | 3 | 3 | 3 |
| Asian | 2 | 2 | 0 |
The highest rate of high school graduation is among native american people with a rate of 100%.
The highest rate of bachelors degrees is among other race people with a rate of 100%.
All
Male
Female
Name | Average | Male | Female |
|---|---|---|---|
| Bachelors Degree | $0 | $0 | $0 |
| Graduate Degree | $63,750 | $125,625 | $56,667 |
| High School Graduate | $21,250 | $0 | $25,893 |
| Less Than 9th Grade | $51,429 | $51,429 | $0 |
| Overall | $34,219 | $37,083 | $27,266 |
| Some College | $38,750 | $50,833 | $35,000 |
$34,219
Average Earnings
$37,083
Average Male
$27,266
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
80.93% of Keystone residents speak only English, while 19.07% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 17.44% of the population.
rate
Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 296 | 45 | 15.2% |
11.14%
Overall Poverty Rate
14.86%
Male Poverty Rate
6.59%
Female Poverty Rate
The race most likely to be in poverty in Keystone is White, with 15.2% below the poverty level.
The race least likely to be in poverty in Keystone is White, with 15.2% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 4.24%. Among those working part-time, it was 13.11%, and for those that did not work, the poverty rate was 12%.
rate
Rate | Poverty |
|---|---|
| High School | 12.4% |
| Some College | 9.43% |
| Less Than 9th Grade | 3.13% |
| Bachelors or Greater | 0% |
rate
Rate | Poverty |
|---|---|
| Male Unemployed | 16.67% |
| Male Employed | 12.26% |
| Female Employed | 2.73% |
| Female Unemployed | 0% |
Households
Families
MarriedFamilies
NonFamilies
Name | Median | Mean |
|---|---|---|
| Families | $61,905 | $85,599 |
| Households | $62,159 | $87,333 |
| Married Families | $62,321 | $-999,999,999 |
| Non Families | - | $87,869 |
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
60.0%
Overall Marriage Rate
57.4%
Male Marriage Rate
63.0%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
31
Number of Veterans
31
Male Veterans
0
Female Veterans
War | Veterans |
|---|---|
| Vietnam | 15 |
| First Gulf War | 6 |
| Second Gulf War | 5 |
| Korea | 2 |
| World War II | 0 |
count
Age Group | Veterans |
|---|---|
| 55 to 64 | 15 |
| 65 to 74 | 8 |
| 75+ | 7 |
| 35 to 54 | 1 |
| 18 to 34 | 0 |
count
Name | Veterans | % of Total |
|---|---|---|
| White | 31 | 12.76% |
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
6.45%
Veteran Poverty Rate
51.61%
Veteran Disability Rate
LaborForceParticipation
80.7%
Labor Force Participation
74.5%
Employment Rate
7.7%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
58.42%
Born in Keystone
93.56%
Native Born
6.44%
Foreign Born
0%
Non Citizen
6.44%
Naturalized
93.56% of Keystone residents were born in the United States, with 58.42% having been born in South Dakota. 0% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 235 | -1 | -0.42% |
| 2028 | 236 | -1 | -0.42% |
| 2027 | 237 | -1 | -0.42% |
| 2026 | 238 | -1 | -0.42% |
| 2025 | 239 | -1 | -0.42% |
| 2024 | 240 | -1 | -0.41% |
| 2023 | 241 | -3 | -1.23% |
| 2022 | 244 | 0 | 0% |
| 2021 | 244 | 0 | 0% |
| 2020 | 244 | -101 | -29.28% |
| 2019 | 345 | 4 | 1.17% |
| 2018 | 341 | 2 | 0.59% |
| 2017 | 339 | -1 | -0.29% |
| 2016 | 340 | 0 | 0% |
| 2015 | 340 | -1 | -0.29% |
| 2014 | 341 | -1 | -0.29% |
| 2013 | 342 | 2 | 0.59% |
| 2012 | 340 | 5 | 1.49% |
| 2011 | 335 | 1 | 0.3% |
| 2010 | 334 | 0 | 0% |