PlainZIP

Alton, IL

Single-footprint Census roll-up for Alton, IL: 1 USPS ZIP, population 32,704. 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-IL · Alton, IL 1 ZIPs · 32,704 pop · #17163/25278 · Madison County

INC-MID · RANK-LOWER · PHOTO-FINISH · BOOK-ONE · OWN-MID · POP-SMALL · SPREAD-UNK · HOME-LOW

  • INC-MID $61,414
  • RANK-LOWER #17163/25278
  • PHOTO-FINISH ≈ Granite City
  • BOOK-ONE 1 ZIP
  • OWN-MID 66% owners
  • POP-SMALL 32,704
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $118,900

Nearest income peer: Granite City, IL ( $1,383 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, IL sits among US cities with a below-median household income, on a small-city population base, across a single-ZIP footprint.

32nd pct
household income vs 25,278 US cities
32,704
city population (Census)
1
USPS ZIP codes covered
$61,414
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.

Below-median income with few delivery areas (1): read cost-of-living from the primary ZIP. Household income $61,414 and poverty 17.8% concentrate in 62002.

Owner-occupancy sits in a mixed band (65.7%) - check the ZIP page's tenure split before treating Alton as a pure owner town.

Within Illinois, Loves Park is the closest lower-income city and Kane 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 62002 carries the town

Alton is published as a single USPS ZIP. Code 62002 is the entire residential footprint (32,704 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

Mid-pack ZBP load on Alton's one ZIP

Citywide ZBP: 708 establishments, 11,642 employees , annual payroll $627,693k (~22 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 62002 (708 units) ; leading NAICS Health care and social assistance (128) · also Retail trade · Accommodation and food services .

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ZIP Codes in Alton, IL

These ZIP codes sit in Madison County, which covers 26 ZIP codes in all; 1 of them fall in Alton. See the Madison County roll-up →

Alton sits in the lower half of Madison County on income: Edwardsville, Collinsville and Godfrey report more, East Alton and Madison report less. Troy marks the far end of that range at $120,466, 96% above Alton.

ZIP Code Population Median income Establishments Density
62002 32,704 $61,414 708 301
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, .