Town of Watterstown, Wisconsin
Census Data for Watterstown ...
The most recent Census Estimate<1> was for 2017 and it gives Watterstown a population of 337 people.
The last Decennial Census<2> was in 2010, giving Watterstown a population of 330 people.
The community of Watterstown is located in Grant County. The 2010 Census gave Grant County a population of 51,208 people. This means that Watterstown had 0.64% of the county's total population, making it Grant's 44th most populous community.
At the same time, Wisconsin had a population of 5,686,986 people.
When the Census Bureau conducts a census for a community like Watterstown, they draw a boundary around the area in which they are going to conduct their count - this is called a sampling area (or a polygon). The shape of the sampling area can be quite complex and it's important to keep in mind that the boundaries of the sampling area may or may not match the recognized boundaries of the community.
Things like the population, area and housing for Watterstown reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Watterstown might be slightly different, it's best to check with the U.S. Census Bureau if you need precision.
The 2010 Census shows that the sample polygon for Watterstown has a total area of 28.72 square miles [74.4 km²]. Of this total, 27.57 square miles [71.4 km²] is land, with the balance (4.01%) being water (1.15 square miles [3 km²]).
Grant County has a land area of 1,146 square miles [2,970.3 km²]. At 27.57 square miles [71.4 km²], Watterstown has 2.4% of the county's total land area.
Not only does the sampling area define boundaries, it also has a GPS location (latitude & longitude) that indicates a point within the sampling area (usually at the center of the polygon). At the time of the 2010 Census, the sampling area was located at:
Lat: 43° 9' 41" (or 43.16°) [Map]
Lon: -90° 36' 30" (or -90.61°)
More information on this topic and the changes between the 2000 Census and the 2010 Census can be found in the section for our Census-to-Census Observations ... (see below).
Population Density ...
Using the population (330 people) and land area (27.57 square miles [71.4 km²]) values from the 2010 Census, Watterstown had a population density of 11.49 people per square mile [4.44 people/km²].
In comparison, the 2000 Census shows Watterstown had a population of 362 people and a land area of 27.74 square miles [71.8 km²]. This gives a population density of 12.58 people per square mile [4.86 people/km²]
NOTE: Be aware that when comparing population density between the 2000 and the 2010 Census, there were changes in the sampling area for Watterstown. You need to be careful when making such a comparison, the differences are likely to lead to a questionable comparison. More information about these differences can be found in the section Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, Watterstown had 193 Housing Units<3> and with its population of 330 people, this averages 1.71 people per Housing Unit.
The 2010 Census shows Watterstown had a land area of 27.57 square miles [71.4 km²]. This translates to 6.72 Housing Units per square mile [2.59 housing units/km²].
From the Census of 2000: Watterstown had 171 Housing Units, a population of 362 people and a land area of 27.74 square miles [71.8 km²]. This gives a density of 2.12 people per Housing Unit and 5.94 Housing Units per square mile [2.29 housing units/km²].
NOTE: Repeating the caution above (under Population Density), be aware that when comparing Housing Units between the 2000 Census and the 2010 Census, there were changes in the sampling area for Watterstown and you need to be careful when comparing numbers between the censuses. More information about the changes can be found in the section called Census-to-Census Observations ... (see below).
Grant County ...
The community of Watterstown is located in Grant County.
The county had a population of 51,208 people at the 2010 Census. With it's population of 330 people, Watterstown represented 0.64% of the county's total.
In addition, where the community of Watterstown has a population density of 11.49 people per square mile [4.44 people/km²], Grant County averages 44.65 people per square mile [17.24 people/km²].
For more information, please visit our Census Page for Grant County.
Population Rings for Watterstown ...
To help identify the number of people who live in Watterstown and the surrounding area, we have drawn concentric rings centered on Watterstown. We counted the number of communities within each ring and summed their populations.<4>
| Radius ||No of|
|5 mi [8 km]||6||5,560||-1.99%|
|10 mi [16 km]||13||9,560||-1.54%|
|15 mi [24 km]||33||21,180||-1.3%|
|20 mi [32 km]||55||38,262||-1.73%|
|25 mi [40 km]||80||56,501||-1.27%|
|30 mi [48 km]||115||105,623||+0.47%|
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for Watterstown, they start by specifying the boundaries of the area to be counted. This area (or sampling area) is a polygon and its shape can be quite complex - it may or may not match the geographical boundaries of Watterstown. It's important to note that from one Census to the next, the shape and location of the polygon can change.
If you need precision or details about the methodology of the Census, you should visit the U.S. Census Bureau for a definitive answer.
There is only a very minor difference in the sampling area given between the 2010 Census and the 2000 Census.
The 2010 Census shows that the total area for Watterstown was 28.72 square miles [74.4 km²]. Of this total, 27.57 square miles [71.4 km²] is land, with the balance (4.01%) being water (1.15 square miles [3 km²]).
The 2000 Census shows a total area of 28.78 square miles [74.5 km²]. Of this total, 27.74 square miles [71.8 km²] is land, with the balance (3.61%) being water (1.04 square miles [2.7 km²]).
While generally coinciding with the GPS location (latitude/longitude) of Watterstown, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Watterstown.
For the 2010 Census, the location was given as:
Lat: 43.161577° (or 43°9'41" N) [Map]
Lon: -90.608398° (or -90°36'30" W)
For the 2000 Census, the location given was:
Lat: 43.163586° (or 43°9'48" N) [Map]
Lon: -90.594326° (or -90°35'39" W)
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 3,813 feet to the west<5> of the location that was used in the 2000 Census.
The U.S. Geological Survey (USGS) and the U.S. Board on Geographic Names (BGN) have assigned a unique GNIS identifier (#1584368) to Watterstown. This identifier also marks a GSP point on the map, and that point lies within the boundaries of Watterstown. The GNIS point has been mapped to the latitude/longitude:
Lat: 43.161930° (or 43°9'42" N) [Map]
Lon: -90.599293° (or -90°35'57" W)
The GSP location given for the 2010 Census lies 2,424 feet to the west<6> of the point given by the GNIS for Watterstown. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Watterstown.
Miscellaneous Information for Watterstown ...
The Federal government has assigned various identifying codes to each community, county and state. At one time or another, the US Census Bureau has referenced one (or more) of the following identifiers when referring to either Grant County or the community of Watterstown:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Watterstown:
GNIS ID for Watterstown: 1584368
GNIS ID for Grant County: 1581081
GNIS ID for Wisconsin: 1779806
The FIPS Codes ...
An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
State Code: 55 (Wisconsin)
County Code: 043 (Grant County)
Place Code: 84075 (Watterstown)
State & County Code: 55/043 (Wisconsin / Grant County)
State & Place Code: 55/84075 (Wisconsin / Watterstown)
Misc. Census Codes ...
Watterstown is located in Census Region #2 (the Midwest Region) and Division #3 (the East North-Central Division).
For more information about the various Federal identification codes, please visit our Misc Page for Watterstown.
|<1>||Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2017.|
- Return to Citation
|<2>||Every 10 years (eg- 1990, 2000, 2010), the US Census Bureau conducts a Constitutionally-mandated count (or enumeration) of people living within the United States. This count is called a Decennial Census. The last Decennial Census was the 2010 Census, with the next one planned for 2020.|
- Return to Citation
|<3>||A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).|
- Return to Citation
|<4>||The communities in our count are those provided by the 2010 Census, so keep in mind that our population rings will only include the people living in those communities. Smaller communities usually don't participate directly in the Census and therefore they won't be included. While our count is a close approximation, it shouldn't be considered as a complete or accurate count.|
- Return to Citation
|<5>||The calculated bearing (or angle) to the 2010 Census location is 101 degrees and a distance of 3,813 feet.|
- Return to Citation
|<6>||The calculated bearing (or angle) to the GNIS point is 93 degrees and a distance of 2,424 feet.|
- Return to Citation
For additional information, please visit our Glossary for Watterstown.