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St. Elmo, Illinois

City in Fayette County, Illinois · ZIP 62458

  • Fayette County
  • Within Avena Township
  • Census data · ACS 2019-2023
  • 3 public schools
Join St. ElmoAsk St. ElmoBusinessesPeople
  • 1,243 (2024 estimate)Population
  • 494Households
  • $47,115Median household income
  • $80,300Median home value
  • 3Public schools
  • 1ZIP codes

About St. Elmo

This page shows only what has been published about St. Elmo: 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 2020−13.9%
1.2k1.3k1.4k1.5k2000: 1,45620002010: 1,42620102020: 1,25420201,4561,254
Population of St. Elmo at each census
CensusPopulation
20001,456
20101,426
20201,254

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 St. Elmo
Under $50k53.1%
$50k to $100k31.2%
$100k to $150k11.7%
$150k to $200k1.8%
$200k and over2.2%

Median household income $47,115 · 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 St. Elmo
Owner occupied
413 units
Renter occupied
81 units
Vacancy rate
11.9%

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.

St. Elmo compared with its county and state
St. Elmo compared with its county and state, American Community Survey 2019-2023
MeasureSt. ElmoFayette CountyIllinois
Population1,40121,38012,692,653
Median household income$47,115$57,113$81,702
Median age37.641.738.9
Median home value$80,300$114,700$250,500
Bachelor’s degree or higher8.2%16.6%37.2%
Foreign-born residents0.7%1.5%14.4%
Owner-occupied homes83.6%80.2%66.8%
Mean commute to work23.1 minutes23.9 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 St. Elmo3
Public schools in St. Elmo, NCES directory 2023–2024
SchoolTypeGradesDistrict
St Elmo Elem SchoolPublicPre-K–6St Elmo CUSD 202
St Elmo Jr High SchoolPublic7–8St Elmo CUSD 202
St Elmo Sr High SchoolPublic9–12St Elmo CUSD 202

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.

Legislative districts

Legislative districts for St. Elmo3
Congressional and state legislative districts for St. Elmo
ChamberDistrict
U.S. House of RepresentativesCongressional District 15 (IL-15)
State legislature, lower chamberState House District 110
State legislature, upper chamberState Senate District 55

Boundaries from the Census Bureau’s TIGER/Line district files, matched to St. Elmo’s own boundary. Who holds each seat appears on the People page once the official records are approved.

Sources: Census cartographic boundaries 2025: congressional districts, 119th Congress, retrieved November 14, 2026; Census cartographic boundaries 2025: state legislative districts, upper chamber, state 17, retrieved November 14, 2026; Census cartographic boundaries 2025: state legislative districts, lower chamber, state 17, retrieved November 14, 2026.

Frequently asked about St. ElmoPromoted from questions people asked

No question about St. Elmo has been asked often enough to publish an answer yet. Ask St. Elmo and the answer, once a person checks it, appears here.

Nearby towns

Other towns in Fayette County

All towns in Fayette County