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Welcome to Rock County ...Time Zone: Rock County lies in the Central Time Zone (CST/CDT) and observes daylight saving time. The community of Janesville is the Seat for Rock County. Rock County was founded in 1836. From the Census Estimates for 2019, <1> Rock had a population of 163,354 people.  This is an increase of 1.93% since the last Census (which gave a population of 160,260 people in 2010). At the time of the 2010 Census, Rock represented 2.82% of the total population of Wisconsin. Below are some of the communities located in Rock County: 
Avon(15 miles [24.1 km] to the southwest)
 
Note: The GPS coordinates that we are using for Avon have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for AvonAvon is located in Rock County (WI)Population from the 2020 Census: 612 peopleBeloit(8 miles [12.9 km] to the south)
 
Note: The GPS coordinates that we are using for Beloit have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for BeloitBeloit is located in Rock County (WI)Population from the 2020 Census: 7,716 peopleBradford(11 miles [17.7 km] to the east)
 
Note: The GPS coordinates that we are using for Bradford have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for BradfordBradford is located in Rock County (WI)Population from the 2020 Census: 1,128 peopleCenter(8 miles [12.9 km] to the northwest)
 
Note: The GPS coordinates that we are using for Center have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for CenterCenter is located in Rock County (WI)Population from the 2020 Census: 1,116 peopleClinton(13 miles [20.9 km] to the southeast)
 
Note: The GPS coordinates that we are using for Clinton have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for ClintonClinton is located in Rock County (WI)Population from the 2020 Census: 975 peopleEdgerton(12 miles [19.3 km] to the north)
 
Jump to our Gazetteer entry for EdgertonEdgerton is located in Rock County (WI)Population from the 2020 Census: 5,595 peopleEvansville(15 miles [24.1 km] to the northwest)
 
Note: The GPS coordinates that we are using for Evansville have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for EvansvilleEvansville is located in Rock County (WI)Population from the 2020 Census: 5,556 peopleFootville(8 miles [12.9 km] to the west)
 
Jump to our Gazetteer entry for FootvilleFootville is located in Rock County (WI)Population from the 2020 Census: 822 peopleContinue List   (20 more) ...
Fulton(10 miles [16.1 km] to the north)
 
Note: The GPS coordinates that we are using for Fulton have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for FultonFulton is located in Rock County (WI)Population from the 2020 Census: 3,435 peopleHarmony(7 miles [11.3 km] to the northeast)
 
Note: The GPS coordinates that we are using for Harmony have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for HarmonyHarmony is located in Rock County (WI)Population from the 2020 Census: 2,604 peopleJanesville(4 miles [6.4 km] to the north)
 
Note: The GPS coordinates that we are using for Janesville have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for JanesvilleJanesville is located in Rock County (WI)Population from the 2020 Census: 3,612 peopleJohnstown(11 miles [17.7 km] to the east)
 
Note: The GPS coordinates that we are using for Johnstown have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for JohnstownJohnstown is located in Rock County (WI)Population from the 2020 Census: 791 peopleLa Prairie(5 miles [8 km] to the east)
 
Note: The GPS coordinates that we are using for La Prairie have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for La PrairieLa Prairie is located in Rock County (WI)Population from the 2020 Census: 871 peopleLima(14 miles [22.5 km] to the northeast)
 
Note: The GPS coordinates that we are using for Lima have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for LimaLima is located in Rock County (WI)Population from the 2020 Census: 1,357 peopleMagnolia(13 miles [20.9 km] to the west)
 
Note: The GPS coordinates that we are using for Magnolia have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for MagnoliaMagnolia is located in Rock County (WI)Population from the 2020 Census: 808 peopleMilton(11 miles [17.7 km] to the northeast)
 
Note: The GPS coordinates that we are using for Milton have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for MiltonMilton is located in Rock County (WI)Population from the 2020 Census: 3,126 peopleNewark(10 miles [16.1 km] to the southwest)
 
Note: The GPS coordinates that we are using for Newark have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for NewarkNewark is located in Rock County (WI)Population from the 2020 Census: 1,617 peopleOrfordville(10 miles [16.1 km] to the west)
 
Jump to our Gazetteer entry for OrfordvilleOrfordville is located in Rock County (WI)Population from the 2020 Census: 1,486 peoplePlymouth(7 miles [11.3 km] to the west)
 
Note: The GPS coordinates that we are using for Plymouth have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for PlymouthPlymouth is located in Rock County (WI)Population from the 2020 Census: 1,305 peoplePorter(12 miles [19.3 km] to the northwest)
 
Note: The GPS coordinates that we are using for Porter have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for PorterPorter is located in Rock County (WI)Population from the 2020 Census: 1,000 peopleRock(2 miles [3.2 km] to the southwest)
 
Note: The GPS coordinates that we are using for Rock have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for RockRock is located in Rock County (WI)Population from the 2020 Census: 3,168 peopleSpring Valley(13 miles [20.9 km] to the west)
 
Note: The GPS coordinates that we are using for Spring Valley have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for Spring ValleySpring Valley is located in Rock County (WI)Population from the 2020 Census: 788 peopleTurtle(9 miles [14.5 km] to the southeast)
 
Note: The GPS coordinates that we are using for Turtle have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for TurtleTurtle is located in Rock County (WI)Population from the 2020 Census: 2,383 peopleUnion(16 miles [25.7 km] to the northwest)
 
Note: The GPS coordinates that we are using for Union have been provided by the GNIS.<2>  The coordinates still need to be verified.Jump to our Gazetteer entry for UnionUnion is located in Rock County (WI)Population from the 2020 Census: 2,135 people Websites of Interest ...Websites specific to Wisconsin
 Websites specific to Rock County
 Websites for nearby counties
Green County
Dane County
Jefferson County
Walworth County
Boone County
Winnebago County
 Cemetery Information and Directories
 
Footnotes ...
| <1> | On a yearly basis, the US Census Bureau creates an estimate of the county's population.  Keep in mind that this is an estimate and not an actual count.  The last physical count was the 2010 Census and the next count will be for the 2020 Census. |  | <2> | The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS).  While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required. |  |  |