Petersburg

County:: Monroe County
County Seat:: No
Area (mi²):: 0.483
State:: Michigan

Petersburg is a city located in Monroe County, Michigan. Petersburg has a 2025 population of 1,146. Petersburg is currently declining at a rate of -0.43% annually and its population has decreased by -2.05% since the most recent census, which recorded a population of 1,170 in 2020.

The average household income in Petersburg is $87,060 with a poverty rate of 3.98%. The median age in Petersburg is 39.2 years: 34.2 years for males, and 41.2 years for females.

Demographics

The racial composition of Petersburg includes 97.22% White, and smaller percentages for Two or more races, other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	1,226	97.22%
Two or more races	30	2.38%
Other race	5	0.4%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Petersburg Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Petersburg's average per capita income is $45,750. Household income levels show a median of $76,071. The poverty rate stands at 3.98%.

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	$104,464	-
Families	$83,333	$98,345
Households	$76,071	$87,060
Non Families	$40,833	$47,391

$45,750

Average Income

$76,071

Median Household Income

3.98%

Poverty Rate