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Williamson, Illinois

Village in Madison County, Illinois · ZIP 62088

  • Madison County
  • Within Olive Township
  • Census data · ACS 2019-2023
Join WilliamsonAsk WilliamsonBusinessesPeople
  • 174 (2024 estimate)Population
  • 86Households
  • $56,667Median household income
  • $75,500Median home value
  • 1ZIP codes

About Williamson

This page shows only what has been published about Williamson: 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 2020−27.1%
1752002252502752000: 25120002010: 23020102020: 1832020251183
Population of Williamson at each census
CensusPopulation
2000251
2010230
2020183

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 Williamson
Under $50k46.5%
$50k to $100k31.4%
$100k to $150k15.1%
$150k to $200k7%
$200k and over0%

Median household income $56,667 · 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 Williamson
Owner occupied
62 units
Renter occupied
24 units
Vacancy rate
11.3%

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.

Williamson compared with its county and state
Williamson compared with its county and state, American Community Survey 2019-2023
MeasureWilliamsonMadison CountyIllinois
Population164264,63112,692,653
Median household income$56,667$74,800$81,702
Median age55.040.238.9
Median home value$75,500$167,900$250,500
Bachelor’s degree or higher2.9%30.8%37.2%
Foreign-born residents0.6%2.2%14.4%
Owner-occupied homes72.1%73.6%66.8%
Mean commute to work29.7 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

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Frequently asked about WilliamsonPromoted from questions people asked

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Nearby towns

Other towns in Madison County

All towns in Madison County