Bertram

County:: Linn County
County Seat:: No
Area (mi²):: 1.534
State:: Iowa

Bertram is a city located in Linn County, Iowa. Bertram has a 2025 population of 265. Bertram is currently declining at a rate of -0.38% annually and its population has decreased by -1.85% since the most recent census, which recorded a population of 270 in 2020.

The average household income in Bertram is $128,139 with a poverty rate of 2.7%. The median age in Bertram is 56.6 years: 54.5 years for males, and 58 years for females.

Demographics

The racial composition of Bertram includes 92.34% White, and smaller percentages for 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	205	92.34%
Two or more races	16	7.21%
Other race	1	0.45%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Bertram Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Bertram's average per capita income is $56,250. Household income levels show a median of $100,000. The poverty rate stands at 2.7%.

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	$124,750	-
Families	$122,500	$139,959
Households	$100,000	$128,139
Non Families	$55,000	$66,600

$56,250

Average Income

$100,000

Median Household Income

2.7%

Poverty Rate