St. Peter

County:: Fayette County
County Seat:: No
Area (mi²):: 0.521
State:: Illinois

St. Peter is a village located in Fayette County, Illinois. St. Peter has a 2025 population of 313. St. Peter is currently declining at a rate of -0.63% annually and its population has decreased by -2.8% since the most recent census, which recorded a population of 322 in 2020.

The average household income in St. Peter is $70,749 with a poverty rate of 11.33%.The median age in St. Peter is 41.2 years: 39.2 years for males, and 45.5 years for females.

Demographics

The racial composition of St. Peter includes 98.05% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	251	98.05%
Two or more races	5	1.95%

St. Peter Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Peter's average per capita income is $46,750. Household income levels show a median of $55,000. The poverty rate stands at 11.33%.

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	$81,250	-
Families	$72,000	$85,942
Households	$55,000	$70,749
Non Families	$25,833	$45,562

$46,750

Average Income

$55,000

Median Household Income

11.33%

Poverty Rate