Data Last Updated: March 1, 2023

ZIP Codes for City of Janesville, IA


    
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Counties:	BREMER, IA
Area Code(s):	319
Timezone(s):	Central (GMT -06:00)
City Population:	930 (More Details)
CBSA:	Waterloo-Cedar Falls, IA
Congressional District(s):	02
Land Area:	435 square miles (county)
Water Area:	4 square miles (county)

1 ZIP Code

Janesville, IA ZIP Code Boundaries

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Janesville, IA Covers 1 ZIP Code

ZIP Code	Type	Population	% of Population	Aliases
50647	Standard	1,894	100.00%	FINCHFORD

Janesville, IA Demographic Information *

Total population**	930
Male population	461
Female population	469
Median age (years)	40.2
White Population	915
Black Population	6
Indian Population	0
Asian Population	2
Hawaiian Population	0
Hispanic Population	3
Median age (Male)	39.9
Median age (Female)	40.5
Total households	398
Family households (families)	262
Average household size	2.34
Average family size	2.9
Total housing units	409

* Demographic data is based on 2010 Census for the City of JANESVILLE.
** City and ZIP Code Population will not be equal due to differences in their geographies.

References

U.S. Postal Service [Last Updated: 2/1/2023], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 2/1/2023], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov/
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010], https://www.census.gov