Porcupine Flag

Porcupine

County Seat:
No
Area (mi²):
9.587
State:
South Dakota

Porcupine is a CDP located in Oglala Lakota County, South Dakota. Porcupine has a 2026 population of 431. Porcupine is currently declining at a rate of -8.3% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Porcupine is 29.1 years: 14 years for males, and 36 years for females. For every 100 females there are 75.9 males.

431
Total Population
45
Density (mi²)
-39 -8.3%
Growth

Porcupine Population

Porcupine Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026431-39-8.3%
2025470-40-7.84%

Median Age

Overall: 29.1 years
Female: 36 years
Male: 14 years

Porcupine Adults

There are 228 adults, (95 of whom are seniors) in Porcupine.

Sex Ratio

Female: 241 (56.8%)
Male: 183 (43.2%)

Demographics

The racial composition of Porcupine includes 86.32% Native American, 12.97% other race, and smaller percentages for White and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
Native American36686.32%
Other race5512.97%
White30.71%
Race
Population ↓
Percentage (of total)
Other race5512.97%
Race
Population ↓
Percentage (of total)
Native American36686.32%
White30.71%

Porcupine Marital Status

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)