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Porcupine, South Dakota facts for kids

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For the census-designated place in North Dakota, see Porcupine, North Dakota.
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Porcupine, South Dakota

pȟahíŋ siŋté
Location in Oglala Lakota County and the state of South Dakota
Location in Oglala Lakota County and the state of South Dakota
Country United States
State South Dakota
County Oglala Lakota
 • Total 9.5 sq mi (24.6 km2)
 • Land 9.5 sq mi (24.6 km2)
 • Water 0 sq mi (0 km2)
3,192 ft (973 m)
 • Total 1,062
 • Density 111.8/sq mi (43.1/km2)
Time zone UTC-7 (Mountain (MST))
 • Summer (DST) UTC-6 (MDT)
ZIP code
Area code(s) 605
FIPS code 46-51340
GNIS feature ID 1257179

Porcupine (Lakota: pȟahíŋ siŋté; "porcupine tail") is a census-designated place (CDP) in Oglala Lakota County, South Dakota, United States. The population was 1,062 at the 2010 census.

The community most likely was named after Porcupine Butte. Porcupine has been noted for its unusual place name, and for its designation as the unofficial capital of the unrecognized Republic of Lakotah.


Porcupine is located at 43°15′45″N 102°20′52″W / 43.26250°N 102.34778°W / 43.26250; -102.34778 (43.262380, -102.347660).

According to the United States Census Bureau, the CDP has a total area of 9.5 square miles (24.6 km²), all land.

Porcupine has been assigned the ZIP code 57772.

Porcupine is also the unofficial capital of the unrecognized Republic of Lakotah.


Porcupine is home to KILI (90.1 FM), a non-profit radio station broadcasting to the Lakota people on the Pine Ridge, Cheyenne River, and Rosebud Indian Reservations, part of the Great Sioux Nation. The station started broadcasting in 1983 as the first American Indian-owned radio station in the United States.


Students at Brave Heart Day, Porcupine, SD, School learn to milk a cow - NARA - 285483
Students at Brave Heart Day School in Porcupine learn to milk a cow, Oct. 2, 1937
Students pose with calf during branding at Brave Heart Day School - NARA - 285477
Students at Brave Heart Day School in Porcupine learn to brand a calf, Oct. 2, 1937
Historical population
Census Pop.
1990 783
2000 407 −48.0%
2010 1,062 160.9%
U.S. Decennial Census

As of the census of 2000, there were 407 people, 89 households, and 76 families residing in the CDP. The population density was 42.9 people per square mile (16.6/km²). There were 103 housing units at an average density of 10.8 per square mile (4.2/km²). The racial makeup of the CDP was 1.23% White, 98.28% Native American, and 0.49% from two or more races. Hispanic or Latino of any race were 1.47% of the population.

There were 89 households out of which 47.2% had children under the age of 18 living with them, 32.6% were married couples living together, 38.2% had a female householder with no husband present, and 13.5% were non-families. 9.0% of all households were made up of individuals and 1.1% had someone living alone who was 65 years of age or older. The average household size was 4.57 and the average family size was 4.83.

In the CDP, the population was spread out with 42.0% under the age of 18, 13.5% from 18 to 24, 21.6% from 25 to 44, 18.9% from 45 to 64, and 3.9% who were 65 years of age or older. The median age was 21 years. For every 100 females there were 110.9 males. For every 100 females age 18 and over, there were 114.5 males.

The median income for a household in the CDP was $24,583, and the median income for a family was $26,667. Males had a median income of $26,786 versus $26,250 for females. The per capita income for the CDP was $4,429. About 30.8% of families and 28.8% of the population were below the poverty line, including 29.1% of those under age 18 and none of those age 65 or over.

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