Also See: Keystone, SD ZIP Codes & ZIP Code Maps
The Town of Keystone had a population of 355 as of July 1, 2021. Keystone ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in South Dakota. See peer rankings below.
The primary coordinate point for Keystone is located at latitude 43.8955 and longitude -103.4182 in Pennington County. The formal boundaries for the Town of Keystone encompass a land area of 2.86 sq. miles and a water area of 0 sq. miles. Pennington County is in the Mountain time zone (GMT -7). The elevation is 4,331 feet.
The Town of Keystone has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.
|Total Population||355 (100%)|
|Population in Households||353 (99.4%)|
|Population in Families||267 (75.2%)|
|Population in Group Quarters1||2 ( 0.6%)|
|Median Household Income||$77,052|
|Average Household Income||$98,318|
|% of Income for Mortgage4||19%|
|Per Capita Income||$42,922|
|Total HU (Housing Units)||242 (100%)|
|Owner Occupied HU||122 (50.4%)|
|Renter Occupied HU||40 (16.5%)|
|Vacant Housing Units||80 (33.1%)|
|Median Home Value||$348,529|
|Average Home Value||$401,446|
|Housing Affordability Index3||132|
|Average Household Size||2.18|
|Average Family Size||3|
GROWTH RATE / YEAR
|Median Household Income||3.04%|
|Per Capita Income||3.01%|
|Owner Occupied HU||0.96%|
The table below compares Keystone to the other 393 incorporated cities, towns and CDPs in South Dakota by rank and percentile using July 1, 2021 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
|Total Population||# 176||55th|
|Population Density||# 315||20th|
|Median Household Income||# 47||88th|
|Housing Affordability Index||# 158||40th|
|Per Capita Income||# 19||95th|
|Diversity Index||# 118||70th|
Additional comparisons and rankings can be made with a VERY EASY TO USE South Dakota Census Data Comparison Tool.