PlainZIP

Alton, IA

Single-footprint Census roll-up for Alton, IA: 1 USPS ZIP, population 1,700. 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 ALTON-IA · Alton, IA 1 ZIPs · 1,700 pop · #4261/25278 · Sioux County

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

  • INC-HIGH $101,250
  • RANK-TOP #4261/25278
  • PHOTO-FINISH ≈ Ireton
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 87% owners
  • POP-VILLAGE 1,700
  • SPREAD-UNK Single-ZIP book
  • HOME-MID $232,700

Nearest income peer: Ireton, IA ( $357 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 Alton

Lowest/highest poles plus county-sharing cities nearest Alton 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, Alton, IA sits among US cities with an upper-quartile household income, on a village-scale population base, across a single-ZIP footprint.

Top 17%
household income vs 25,278 US cities
1,700
city population (Census)
1
USPS ZIP codes covered
$101,250
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 $101,250 and home value $232,700 should be read as near-neighborhood numbers ; bachelor's attainment averages 29.2%.

Owner-occupancy here runs high (87.1%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within Iowa, Gilman is the closest lower-income city and Bettendorf the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Alton.

Population concentration

Alton's single ZIP 51003 carries the town

Alton is published as a single USPS ZIP. Code 51003 is the entire residential footprint (1,700 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 Alton's one ZIP

Citywide ZBP: 44 establishments, 175 employees , annual payroll $7,882k (~26 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 51003 (44 units) ; leading NAICS Construction (9) · also Transportation and warehousing · Other services (except public administration) .

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ZIP Codes in Alton, IA

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

Alton sits in the upper half of Sioux County on income: Sioux Center, Orange City and Rock Valley report less, while Maurice reports more. Chatsworth marks the far end of that range at $44,375, 56% below Alton.

ZIP Code Population Median income Establishments Density
51003 1,700 $101,250 44 12
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Alton 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 Alton, .