Janesville, IA Profile: Facts & Data

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Janesville, Iowa - Basic Facts

The City of Janesville had a population of 1,043 as of July 1, 2023. Janesville ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Iowa. See peer rankings below.

The primary coordinate point for Janesville is located at latitude 42.6461 and longitude -92.463 in Bremer County. The formal boundaries for the City of Janesville encompass a land area of 1.44 sq. miles and a water area of 0.05 sq. miles. Bremer County is in the Central time zone (GMT -6).

While the primary coordinates for City of Janesville are located in Bremer County, it should be noted that the formal boundaries for this community also extend into and Black Hawk County.

The City of Janesville has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Janesville is located within Township of Jackson, a minor civil division (MCD) of Bremer County.


Jump to... (On This Page!)
  1. Janesville 2023 Demographic Data
  2. Growth Rates for Janesville (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Iowa Research Tools (Easy Tools & Current Data)
  3. Iowa Data Comparison Tool - 2023 Demographics
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Janesville, IA Data & Demographics (As of July 1, 2023)

POPULATION

Total Population 1,043 (100%)
Population in Households 1,043 (100.0%)
Population in Families 859 (82.4%)
Population in Group Quarters1 0
Population Density 738
Diversity Index2 9
 
 

INCOME

Median Household Income $81,563
Average Household Income $93,705
% of Income for Mortgage4 18%
Per Capita Income $38,183
Wealth Index5 73
Socioeconomic Status Index6 High (67.0)
 

HOUSING

Total HU (Housing Units) 461 (100%)
Owner Occupied HU 379 (82.2%)
Renter Occupied HU 46 ( 10.0%)
Vacant Housing Units 36 ( 7.8%)
Median Home Value $246,642
Average Home Value $252,111
Housing Affordability Index3 127
 

HOUSEHOLDS

Total Households 425
Average Household Size 2.45
Family Households 284
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

2020-2023 2023-2028
Population 0.27% 0.19%
Households 0.44% 0.19%
Families   0.63%
Median Household Income   2.71%
Per Capita Income   2.57%
Owner Occupied HU   0.11%

Janesville, IA - Peer Comparisons by Rank and Percentile

The table below compares Janesville to the other 1,027 incorporated cities, towns and CDPs in Iowa by rank and percentile using July 1, 2023 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 271 74th
Population Density # 435 58th
Median Household Income # 227 78th
Housing Affordability Index # 406 40th
Per Capita Income # 535 48th
Diversity Index # 834 20th

Additional comparisons and rankings can be made with a VERY EASY TO USE Iowa Census Data Comparison Tool.

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