PlainZIP

Keystone, SD

Single-footprint Census roll-up for Keystone, SD: 1 USPS ZIP, population 844. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet KEYSTONE-SD · Keystone, SD 1 ZIPs · 844 pop · #4785/25278 · Pennington County

INC-HIGH · RANK-TOP · PHOTO-FINISH · BOOK-ONE · OWN-HIGH · POP-VILLAGE · SPREAD-UNK · HOME-HIGH

  • INC-HIGH $97,969
  • RANK-TOP #4785/25278
  • PHOTO-FINISH ≈ New Underwood
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 86% owners
  • POP-VILLAGE 844
  • SPREAD-UNK Single-ZIP book
  • HOME-HIGH $473,500

Nearest income peer: New Underwood, SD ( $235 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Keystone

Lowest/highest poles plus county-sharing cities nearest Keystone on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Keystone, SD sits among US cities with an upper-quartile household income, on a village-scale population base, across a single-ZIP footprint.

Top 19%
household income vs 25,278 US cities
844
city population (Census)
1
USPS ZIP codes covered
$97,969
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $97,969 and home value $473,500 should be read as near-neighborhood numbers ; bachelor's attainment averages 43.0%.

Owner-occupancy here runs high (85.6%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within South Dakota, Cresbard is the closest lower-income city and Egan the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Keystone.

Population concentration

One ZIP, 57751, is all of Keystone

There is no split to weigh here: 57751 holds every one of Keystone's 844 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Dense ZBP book packed into Keystone's one ZIP

Citywide ZBP: 72 establishments, 304 employees , annual payroll $18,744k (~85 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 57751 (72 units) ; leading NAICS Accommodation and food services (31) · also Retail trade · Arts, entertainment, and recreation .

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ZIP Codes in Keystone, SD

These ZIP codes sit in Pennington County, which covers 13 ZIP codes in all; 1 of them fall in Keystone. See the Pennington County roll-up →

Keystone sits in the upper half of Pennington County on income: Rapid City, Box Elder and Hill City report less, while Owanka reports more. Owanka marks the far end of that range at $250,000+, 155% above Keystone.

ZIP Code Population Median income Establishments Density
57751 844 $97,969 72 5
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Keystone roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Keystone, .