Pennington County, South Dakota

Time zones in Pennington County

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

1. 5770145,795 people
2. 5770235,595 people
3. 5770318,013 people
4. 5771912,221 people
5. 577187,937 people
6. 577305,596 people
7. 827015,459 people
8. 577062,787 people
9. 577442,421 people
10. 577451,894 people
11. 577321,714 people
12. 577611,180 people

20 ZIP Code areas overlap Pennington County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Pennington County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Pennington County, largest first

1. Fairview Township109 people
2. Cedar Butte Township77 people
3. Sunnyside Township63 people
4. Lake Flat Township60 people
5. Scenic Township53 people
6. Huron Township52 people
7. Lake Hill Township47 people
8. Ash Township36 people
9. Imlay Township29 people
10. Wasta Township26 people
11. Rainy Creek/Cheyenne Township22 people
12. Owanka Township8 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in South Dakota, by county

School districts in Pennington County, largest first

1. Rapid City School District 51-4101,606 people
2. Douglas School District 51-118,206 people
3. Custer School District 16-18,644 people
4. Hill City School District 51-23,435 people
5. Wall School District 51-51,412 people
6. New Underwood School District 51-31,159 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Tribal areas in Pennington County, largest first

1. Shakopee Mdewakanton Sioux Community and Off-Reservation Trust Land448 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. Rapid City, South Dakota (city)77,946 people
2. Box Elder, South Dakota (city)12,902 people
3. Rapid Valley, South Dakota (CDP)6,975 people
4. Colonial Pine Hills, South Dakota (CDP)2,609 people
5. Green Valley, South Dakota (CDP)1,642 people
6. Ashland Heights, South Dakota (CDP)1,105 people
7. Hill City, South Dakota (city)834 people
8. Johnson Siding, South Dakota (CDP)704 people
9. Wall, South Dakota (town)622 people
10. New Underwood, South Dakota (city)509 people
11. Hermosa, South Dakota (town)353 people
12. Keystone, South Dakota (town)336 people

Bordering areas, nearest first

Distances are straight lines between map points.

1. Custer County, South Dakota39 mi southwest
2. Meade County, South Dakota42 mi north
3. Oglala Lakota County, South Dakota48 mi south
4. Lawrence County, South Dakota54 mi northwest
5. Jackson County, South Dakota64 mi east
6. Haakon County, South Dakota67 mi east
7. Weston County, Wyoming88 mi west

Before using this answer on a form

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See this county on Census.gov ↗