Rock County ZIP Codes

List of ZIP Codes in Rock County

The following table lists ZIP Codes associated with Rock County, Wisconsin, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

S.N.	Zip Code	Latitude	Longitude	City	Population	Density
1	53501	42.60484	-89.07165	Afton	147	124.2
2	53505	42.66063	-88.8176	Avalon	370	6.5
3	53511	42.54627	-89.09792	Beloit	48,305	162.4
4	53520	42.60133	-89.36123	Brodhead	6,758	21.8
5	53525	42.54579	-88.84907	Clinton	4,083	27.7
6	53534	42.84763	-89.09032	Edgerton	12,344	55.9
7	53536	42.76366	-89.26983	Evansville	9,449	41.0
8	53537	42.67267	-89.21056	Footville	818	362.4
9	53545	42.73113	-89.03613	Janesville	23,937	410.6
10	53546	42.65126	-88.94854	Janesville	29,482	140.3
11	53548	42.68907	-89.13095	Janesville	20,509	105.6
12	53563	42.78276	-88.93127	Milton	11,468	66.1
13	53576	42.62543	-89.23949	Orfordville	2,309	28.6

About Rock County ZIP Codes

Rock County in Wisconsin (WI) is served by approximately 13 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 169,979 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in Rock County are located in cities such as Janesville, Beloit, Edgerton, Milton, Evansville. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in Rock County, Wisconsin follow the America/Chicago time zone.

Rock County ZIP Codes

List of ZIP Codes in Rock County

About Rock County ZIP Codes

Wisconsin Counties ZIP Codes

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