Janesville Flag

Janesville

County:
Bremer County
County Seat:
No
Area (mi²):
1.39
State:
Iowa

Janesville is a city located in Bremer County, Iowa. Janesville has a 2025 population of 1,057. Janesville is currently growing at a rate of 0.28% annually and its population has increased by 1.54% since the most recent census, which recorded a population of 1,041 in 2020.

The average household income in Janesville is $93,921 with a poverty rate of 5.75%.The median age in Janesville is 44.7 years: 44 years for males, and 45.3 years for females.

1.1K
Total Population
761
Density (mi²)
3 0.28%
Growth

Janesville Population

Janesville Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Janesville includes 99.11% White, and smaller percentages for Two or more races, other race and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White1,00399.11%
Two or more races70.69%
Other race20.2%

Janesville Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Janesville's average per capita income is $57,574. Household income levels show a median of $84,231. The poverty rate stands at 5.75%.

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
Families$110,139$112,865
Married Families$110,139-
Households$84,231$93,921
Non Families$41,750$46,143

$57,574

Average Income

$84,231

Median Household Income

5.75%

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)