Janesville, IA 50647 ZIP Code Profile

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Janesville, IA

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ZIP Code 50647: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Janesville, IA 50647

Not Acceptable, USPS
Finchford, IA 50647

  • ZIP Code Type: STANDARD
  • County: Bremer County
  • Centroid: Latitude 42.633, Longitude -92.495
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 50647 has segments in 2 Counties (Black Hawk, Bremer).

  • Businesses Addresses: 46
  • PO Box Addresses: 233
  • Residential Addresses: 612
    • Multi-Family Addresses: 24
    • Single Family Addresses: 588

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

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50647 ZIP Code Map

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Janesville, IA 50647 Data & Demographics (As of July 1, 2017)


Total Population 1,932
Daytime Population: Workers 666
Daytime Population: Residents 980
Total Daytime Population (TDP) 1,646
Ratio TDP/Total Population1 0.85
Population in Households 1,932
Population in Familes 1,632
Population in Group Qrtrs 0
Population Density2 72
Diversity Index3 8


Median Household Income $61,075
Average Household Income $82,728
Per Capita Income $34,427


Total Housing Units 828 (100%)
Owner Occupied HU 671 (81.0%)
Renter Occupied HU 133 (16.1%)
Vacant Housing Units 24 ( 2.9%)
Median Home Value $218,578
Average Home Value $276,230


Total Households 804
Average Household Size 2.4
Family Households 581
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population 1.25% 1.06%
Households 1.28% 1.12%
Families 1.09% 0.98%
Median Household Income   1.79%
Per Capita Income   2.29%

Janesville, IA 50647 - Peer Comparisons by Rank and Percentile

The table below compares 50647 to the other 963 ZIP Codes in Iowa by rank and percentile using July 1, 2017 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 # 295 69th
Population Density # 228 76th
Diversity Index # 632 34th
Median Household Income # 218 77th
Per Capita Income # 95 90th

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

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