Janesville Flag

Janesville

County Seat:
No
Area (mi²):
143.567
State:
Kansas

Janesville is located in Greenwood County, Kansas. Janesville has a 2025 population of 342 . Janesville is currently declining at a rate of -0.29% annually and its population has decreased by -1.72% since the most recent census, which recorded a population of 348 in 2020.

The average household income in Janesville is $104,618 with a poverty rate of 7.92%. The median age in Janesville is 52.2 years: 55 years for males, and 50.5 years for females. For every 100 females there are 104.5 males.

342
Total Population
2
Density (mi²)
-1 -0.29%
Growth

Janesville Population

Janesville Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Janesville includes 95.63% White, and smaller percentages for other race and multiracial populations.

Population by Race

White (95.63%)

Two or more races (3.55%)

Other race (0.82%)

Race
Population
Percentage (of total)
White35095.63%
Two or more races133.55%
Other race30.82%

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 $39,375. Household income levels show a median of $59,063. The poverty rate stands at 7.92%.

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$103,036-
Families$101,250$141,335
Households$59,063$104,618
Non Families$28,606$33,256

$39,375

Average Income

$59,063

Median Household Income

7.92%

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)