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Decatur, Macon County, Illinois

City in Macon County, Illinois · ZIP 62521, 62522, 62523

  • Macon County
  • Within Decatur Township
  • Census data · ACS 2019-2023
  • 20 public schools
Join DecaturAsk DecaturBusinessesPeople
  • 68,763 (2024 estimate)Population
  • 30,904Households
  • $50,809Median household income
  • $97,300Median home value
  • 20Public schools
  • 5ZIP codes

About Decatur

This page shows only what has been published about Decatur: 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%
70k75k80k85k2000: 81,86020002010: 76,12220102020: 70,522202081,86070,522
Population of Decatur at each census
CensusPopulation
200081,860
201076,122
202070,522

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 Decatur
Under $50k49.4%
$50k to $100k30.3%
$100k to $150k11.1%
$150k to $200k4.4%
$200k and over4.8%

Median household income $50,809 · 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 Decatur
Owner occupied
19,244 units
Renter occupied
11,660 units
Vacancy rate
14.4%

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.

Decatur compared with its county and state
Decatur compared with its county and state, American Community Survey 2019-2023
MeasureDecaturMacon CountyIllinois
Population70,368102,59112,692,653
Median household income$50,809$62,449$81,702
Median age39.940.938.9
Median home value$97,300$121,800$250,500
Bachelor’s degree or higher21.3%24.1%37.2%
Foreign-born residents3.1%2.8%14.4%
Owner-occupied homes62.3%69.8%66.8%
Mean commute to work17.4 minutes18.9 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 Decatur20
Public schools in Decatur, NCES directory 2023–2024
SchoolTypeGradesDistrict
Pershing Early Learning CenterPublicPre-KDecatur SD 61
American Dreamer STEM AcademyPublicK–8Decatur SD 61
Dennis Lab SchoolPublicK–8Decatur SD 61
Franklin Grove Elem SchoolPublicK–6Decatur SD 61
Hope AcademyPublicK–8Decatur SD 61
Johns Hill Magnet SchoolPublicK–8Decatur SD 61
Michael E Baum Elem SchoolPublicK–6Decatur SD 61
Montessori Academy for PeacePublicPre-K–8Decatur SD 61
Muffley Elem SchoolPublicK–6Decatur SD 61
Parsons Elementary SchoolPublicK–6Decatur SD 61
Robertson Charter SchoolCharterPre-K–8Decatur SD 61
South Shores Elem SchoolPublicK–6Decatur SD 61
Stephen Decatur Middle SchoolPublic7–8Decatur SD 61
Milligan Academy RsspAlternative6–11Macon/Piatt ROE
Eisenhower High SchoolPublic9–12Decatur SD 61
Futures UnlimitedAlternative9–12Macon/Piatt ROE
Heartland Technical AcademyCareer and technical11–12Macon/Piatt ROE
MacArthur High SchoolPublic9–12Decatur SD 61
Garfield Learning AcademyAlternativeK–12Decatur SD 61
Social-Emotional Learning AcademySpecial educationK–12Macon-Piatt Spec Educ Jnt Agr

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 Decatur8
Congressional and state legislative districts for Decatur
ChamberDistrictShare of Decatur
U.S. House of RepresentativesCongressional District 13 (IL-13)55%
U.S. House of RepresentativesCongressional District 15 (IL-15)45%
State legislature, lower chamberState House District 8834%
State legislature, lower chamberState House District 9663%
State legislature, lower chamberState House District 1073%
State legislature, upper chamberState Senate District 4434%
State legislature, upper chamberState Senate District 4863%
State legislature, upper chamberState Senate District 543%

Boundaries from the Census Bureau’s TIGER/Line district files, matched to Decatur’s own boundary; a town split between districts lists each with the share of its land inside it. 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 DecaturPromoted from questions people asked

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

Nearby towns

Other towns in Macon County

All towns in Macon County

Other places named Decatur in Illinois