Dorchester Flag

Dorchester

County:
Macoupin County
County Seat:
No
Area (mi²):
0.722
State:
Illinois

Dorchester is a village located in Macoupin County, Illinois. Dorchester has a 2025 population of 122. Dorchester is currently declining at a rate of -0.81% annually and its population has decreased by -5.43% since the most recent census, which recorded a population of 129 in 2020.

The average household income in Dorchester is $117,588 with a poverty rate of 1.08%.The median age in Dorchester is 42.8 years: 55.2 years for males, and 37.5 years for females.

122
Total Population
169
Density (mi²)
-1 -0.81%
Growth

Dorchester Population

Dorchester Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Dorchester includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White185100%

Dorchester Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Dorchester's average per capita income is $70,833. Household income levels show a median of $121,250. The poverty rate stands at 1.08%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$126,250-
Families$124,375$125,496
Households$121,250$117,588
Non Families$26,875$30,580

$70,833

Average Income

$121,250

Median Household Income

1.08%

Poverty Rate

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)