Janesville, IA Population

Overview

1,059

Total Population

40.9

Median age

47.50%

Female population %

110.5:100

Gender ratio (M:F)

55-59 years

Largest age group

56.4

Total dependency ratio

White

Largest racial group

13

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Janesville's population is old compared to the rest of the country:

The median age in Janesville is 40.9, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Janesville's population under 18 was 26.72%, compared to the 22.51% nationwide.
Janesville's elderly or the senior population (over 65 age) was 15.20% as compared to 16.04% nationwide.
Of the total population in Janesville, 20.87% were under the age of 15, 12.84% aged 15 to 29, 51.09% aged 30 to 64, 14.26% aged 65 to 84, and 0.94% were 85 years of age and older.

There are 53 less females than males in Janesville:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 47.50% females and 52.50% males in Janesville, IA.
The Janesville, IA gender ratio is 110.5:100 i.e. 110.5 men to 100 women (1.105).
For male population, the largest age group is 55-59 years with a population of 64.
For the female population, the largest age group is 55-59 years with a population of 77.

Janesville's population is not that diverse:

Racial distribution of Janesville population: 99.62% are White and 0.38% are multiracial.
Janesville's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 13 is Hispanic or Latino (of any race), and 1,046 (98.77% of the total population) is Non-Hispanic.
The largest racial group in Janesville is White with a population of 1,055 (99.62% of the total population).

Janesville's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 1,050 in the year 2022
From 2000 to 2010, Janesville's population increased by 108 (13.11%), as compared to the national growth of 9.63%.
From 2010 to 2020, Janesville's population increased by 107 (11.48%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Janesville's population was lowest in year 2002 at 817.