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Alton, Illinois

City in Madison County, Illinois · ZIP 62002, 62018

  • Madison County
  • Census data · ACS 2019-2023
  • 8 public schools
Join AltonAsk AltonBusinessesPeople
  • 24,967 (2024 estimate)Population
  • 10,811Households
  • $53,005Median household income
  • $99,500Median home value
  • 8Public schools
  • 2ZIP codes

About Alton

This page shows only what has been published about Alton: Census facts with their sources first, then its businesses, jobs, events, people in public roles, housing and questions as they are added. Nothing here is written by the town government.

Town intelligenceOfficial sources, refreshed yearly

Population, 2000 to 2020−15.8%
24k26k28k30k32k2000: 30,49620002010: 27,86520102020: 25,676202030,49625,676
Population of Alton at each census
CensusPopulation
200030,496
201027,865
202025,676

As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.

Sources: Census 2000 Summary File 1: total population, place level, state 17, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 17, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 17, retrieved November 14, 2026.

Household income in Alton
Under $50k47.1%
$50k to $100k31.9%
$100k to $150k12.8%
$150k to $200k4.7%
$200k and over3.4%

Median household income $53,005 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.

Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 17, retrieved November 14, 2026.

Housing tenure in Alton
Owner occupied
6,178 units
Renter occupied
4,633 units
Vacancy rate
13.6%

Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.

Source: American Community Survey 5-year data profile 2019–2023, place level, state 17, retrieved November 14, 2026.

Alton compared with its county and state
Alton compared with its county and state, American Community Survey 2019-2023
MeasureAltonMadison CountyIllinois
Population25,430264,63112,692,653
Median household income$53,005$74,800$81,702
Median age38.440.238.9
Median home value$99,500$167,900$250,500
Bachelor’s degree or higher21.2%30.8%37.2%
Foreign-born residents2.3%2.2%14.4%
Owner-occupied homes57.1%73.6%66.8%
Mean commute to work23.7 minutes25.2 minutes28.1 minutes

Source: American Community Survey 5-year data profile 2019–2023, place level, state 17, retrieved November 14, 2026.

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Schools

Public schools in Alton8
Public schools in Alton, NCES directory 2023–2024
SchoolTypeGradesDistrict
East Elementary SchoolPublic3–5Alton CUSD 11
Eunice Smith Elem SchoolPublicK–2Alton CUSD 11
Lovejoy Elem SchoolPublicK–2Alton CUSD 11
West Elementary SchoolPublic2–5Alton CUSD 11
Alton Middle SchoolPublic6–8Alton CUSD 11
Journeys SchoolSpecial education7–12Region III Spec Ed Coop
L&C Elementary/Region IIISpecial educationMRegion III Spec Ed Coop
Mark TwainAlternativeK–12Alton CUSD 11

Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.

Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.

Frequently asked about AltonPromoted from questions people asked

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Nearby towns

Other towns in Madison County

All towns in Madison County