PlainZIP

Isabel, SD

Single-footprint Census roll-up for Isabel, SD: 1 USPS ZIP, population 414. 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 ISABEL-SD · Isabel, SD 1 ZIPs · 414 pop · #9708/25278 · Dewey County

INC-HIGH · RANK-UPPER · ABOVE-PEER · BOOK-ONE · OWN-MID · POP-VILLAGE · SPREAD-UNK · HOME-LOW

  • INC-HIGH $78,750
  • RANK-UPPER #9708/25278
  • ABOVE-PEER over Timber Lake
  • BOOK-ONE 1 ZIP
  • OWN-MID 77% owners
  • POP-VILLAGE 414
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $70,000

Nearest income peer: Timber Lake, SD ( $12,656 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 Isabel

Lowest/highest poles plus county-sharing cities nearest Isabel 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, Isabel, SD sits among US cities with an above-median household income, on a village-scale population base, across a single-ZIP footprint.

Top 38%
household income vs 25,278 US cities
414
city population (Census)
1
USPS ZIP codes covered
$78,750
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.

Above-median income on a short ZIP list (1) - lead code 57633 (414 residents). Household income $78,750 is the roll-up; open the ZIP for tenure and commute.

Owner-occupancy sits in a mixed band (76.5%) - check the ZIP page's tenure split before treating Isabel as a pure owner town.

Within South Dakota, De Smet is the closest lower-income city and Barnard the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Isabel.

Population concentration

Isabel's single ZIP 57633 carries the town

Isabel is published as a single USPS ZIP. Code 57633 is the entire residential footprint (414 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Dense ZBP book packed into Isabel's one ZIP

Citywide ZBP: 19 establishments, 99 employees , annual payroll $4,225k (~46 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 57633 (19 units) ; leading NAICS Wholesale trade (4) · also Accommodation and food services .

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ZIP Codes in Isabel, SD

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

Isabel sits in the upper half of Dewey County on income: Eagle Butte, Timber Lake and Ridgeview report less, while Lantry reports more. Ridgeview marks the far end of that range at $19,327, 75% below Isabel.

ZIP Code Population Median income Establishments Density
57633 414 $78,750 19 0
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Isabel 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 Isabel, .