Statistic Janesville Iowa National
Population 1,051 3,155,070 328,239,523
Population density (sq mi) 743 57 91
Median age 42.0 38.0 37.7
Male/Female ratio 1.1:1 1.0:1 1.0:1
Married (15yrs & older) 76% 60% 55%
Families w/ Kids under 18 41% 44% 43%
Speak English 98% 92% 79%
Speak Spanish 2% 4% 13%

Overview of Janesville Demographics

The population in Janesville is 1,051, while the population density is 743 people per square mile, contrasting with the national average of 91. The median age stands at 42, with 76% of individuals aged 15 or older being married and 41% having children under 18. In terms of household income equality in Janesville, 14% of households report a median income below $25,000, while 18% report an income exceeding $150,000. The Janesville demographics data can provide invaluable insight into the composition, dynamics and needs of urban and rural areas, enabling planners, developers and policymakers to strategize effectively for the promotion of prosperity, equity and well-being for all residents in the area.

Janesville Racial Demographics & Ethnicity

The 5 largest ethnic groups in Janesville are 100% White, 0% Black or African American, 0% Asian, 0% American Indian and 0% Native Hawaiian, with 1.7% of the population identifying as Hispanic or Latino. Of note, 98.2% of households reported speaking English only, while 1.8% reported speaking Spanish only. Additionally, 0.7% of residents were classified as foreign-born. The Janesville racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.

Janesville Population Density

Regions with below-average population density like Janesville, tend to offer a serene pace of life, stronger ties to nature, tight-knit communities, increased affordability and heightened safety, making them appealing havens for those desiring a tranquil lifestyle away from urban chaos. These locales often boast a more economical cost of living, with housing prices typically more accessible and residents may enjoy reduced taxes, living expenses and insurance rates. Low population density areas generally exhibit lower crime rates than densely populated urban regions, fostering a heightened sense of security for residents and their families. With a population density of 743 people per square mile, Janesville ranks lower than 50% of cities nationwide and positions itself in a great spot to take advantage of all these benefits.

Why are Demographics Important?

Social Cohesion: Analyzing demographics is vital for nurturing social cohesion and fostering understanding among diverse communities. By embracing and respecting variations in Janesville demographics, societies can advance inclusivity, diversity and social unity while combatting social inequalities and advocating for equal opportunities. Racial demographics mirror the diversity within a population and can be instrumental in cultivating inclusive and inviting communities. Embracing diversity strengthens social bonds, fosters cultural appreciation and enriches society by acknowledging the contributions of individuals from various racial and ethnic backgrounds.

Healthcare Planning: An analysis of Janesville demographics can inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. Understanding demographic trends allows healthcare providers and policymakers to allocate resources effectively, develop prevention and intervention programs and address health inequities within communities. Leveraging demographic data, healthcare providers, and policymakers strive to achieve equitable, accessible, and high-quality healthcare for all individuals and communities. This proactive healthcare planning approach ensures targeted interventions, efficient resource allocation and customized healthcare services to meet the diverse needs of populations.

Policy Planning: Demographic data and statistics can inform policy and decision-making processes at various levels of government, as well as in organizations and businesses. By reporting and analyzing Janesville demographics data, policymakers, government officials and organizational leaders can identify areas of need, allocate resources effectively and develop targeted policies and programs that address the specific needs and priorities of different demographic groups. Janesville demographics can play a crucial role in policy planning by informing resource allocation, evidence-based decision making, identifying priorities, forecasting future trends, monitoring policy impact and promoting equity and inclusion. By leveraging this data effectively, policymakers can develop policies that are targeted, effective and responsive to the needs of diverse communities.

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Demographics Quick Facts

  • The population density in Janesville is 1204% higher than Iowa
  • The median age in Janesville is 11% higher than Iowa
  • In Janesville 100.00% of the population is White
  • In Janesville 0.00% of the population is Black
  • In Janesville 0.00% of the population is Asian

Compare Janesville, IA Demographics


      Janesville racial demographics

      Race Janesville Iowa National
      White 100.00% 90.90% 73.35%
      Black 0.00% 3.32% 12.63%
      Asian 0.00% 2.14% 5.22%
      American Indian 0.00% 0.32% 0.82%
      Native Hawaiian 0.00% 0.08% 0.18%
      Mixed race 0.00% 1.97% 3.06%
      Other race 0.00% 1.27% 4.75%
      In Janesville, 1.7% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      Janesville age breakdown

      Marital status

      Age of children in married couples

      Source: The Janesville, IA demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS).