PlainZIP

Sinai, SD

Single-footprint Census roll-up for Sinai, SD: 1 USPS ZIP, population 102. 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 SINAI-SD · Sinai, SD 1 ZIPs · 102 pop · #19240/25278 · Brookings County

INC-MID · RANK-LOWER · BELOW-PEER · BOOK-ONE · OWN-MID · POP-VILLAGE · SPREAD-UNK · HOME-LOW

  • INC-MID $56,875
  • RANK-LOWER #19240/25278
  • BELOW-PEER under Brookings
  • BOOK-ONE 1 ZIP
  • OWN-MID 67% owners
  • POP-VILLAGE 102
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $89,300

Nearest income peer: Brookings, SD (+ $9,462 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 Sinai

Lowest/highest poles plus county-sharing cities nearest Sinai 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, Sinai, SD sits among US cities with one of the lowest household incomes among US cities, on a village-scale population base, across a single-ZIP footprint.

24th pct
household income vs 25,278 US cities
102
city population (Census)
1
USPS ZIP codes covered
$56,875
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.

Lower-income footing on only 1 ZIP ($56,875 average) · poverty 1.9%. The primary code (57061) carries the ACS household fields that matter.

Owner-occupancy sits in a mixed band (66.7%) - check the ZIP page's tenure split before treating Sinai as a pure owner town.

Within South Dakota, Glenham is the closest lower-income city and Ellsworth Afb the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Sinai.

Population concentration

Sinai reads through its lone ZIP, 57061

102 ACS residents, one ZIP: 57061 is not the leading code inside Sinai, it is the only one on file. Treat the ZIP page as the primary source for anything below the city-wide total.

Census ZBP business roll-up

Dense ZBP book packed into Sinai's one ZIP

Citywide ZBP: 8 establishments, 32 employees , annual payroll $977k (~78 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 57061 (8 units) .

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ZIP Codes in Sinai, SD

These ZIP codes sit in Brookings County, which covers 7 ZIP codes in all; 1 of them fall in Sinai. See the Brookings County roll-up →

Every one of the 6 cities sharing Brookings County reports a higher average ZIP median income than Sinai, Brookings, Volga and Elkton among them. That gap is the county's income spread, not a measure of the housing or commute picture below. Aurora marks the far end of that range at $93,214, 64% above Sinai.

ZIP Code Population Median income Establishments Density
57061 102 $56,875 8 182
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Sinai 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 Sinai, .