Auburn Flag

Auburn

County:
Sangamon County
County Seat:
No
Area (mi²):
15.806
State:
Illinois

Auburn is located in Sangamon County, Illinois. Auburn has a 2025 population of 229 . Auburn is currently declining at a rate of -0.87% annually and its population has decreased by -2.14% since the most recent census, which recorded a population of 234 in 2020.

The median age in Auburn is 58.7 years: 60.5 years for males, and 58.2 years for females. For every 100 females there are 137.6 males.

229
Total Population
14
Density (mi²)
-2 -0.87%
Growth

Auburn Population

Auburn Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Auburn includes 99.72% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

White (99.72%)

Two or more races (0.28%)

Race
Population
Percentage (of total)
White35399.72%
Two or more races10.28%

Auburn Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)