A Gazetteer for the United States and Canada
Town of Spencer, Wisconsin
Census Data for Spencer ...
The most recent Census Estimate<1> was for 2018 and it gave Spencer a population of 1,674 people.
The last Decennial Census<2> was in 2010, which gave Spencer a population of 1,581 people.
The community of Spencer is located in Marathon County. The 2010 Census gave Marathon County a population of 134,063 people. This means that Spencer had 1.18% of the county's total population, making it Marathon's 17th most populous community.
When the Census Bureau conducts a census for a community like Spencer, they draw a boundary around the area in which they are going to conduct their count - this defines the sampling area (usually shaped as 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 Spencer reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Spencer might be different, it's best to check with the U.S. Census Bureau to resolve any difference between the two.
The 2010 Census shows that the sampling area for Spencer has a total area of 31.6 square miles [81.8 km²]. Of this total, a small amount of the area is covered by water (0.2 square miles [0.5 km²]).
Marathon County has a land area of 1,544 square miles [4,001.5 km²]. At 31.39 square miles [81.3 km²], Spencer has 2.03% 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 the center of the polygon, known as the centroid). At the time of the 2010 Census, the sampling area was located at:
Lat: 44° 43' 30" (or 44.73°) [Map]
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 (1,581 people) and land area (31.39 square miles [81.3 km²]) values from the 2010 Census, Spencer had a population density of 50 people per square mile [19.32 people/km²].
In comparison, the 2000 Census shows Spencer had a population of 1,341 people and a land area of 31.52 square miles [81.6 km²]. This gives a population density of 42.27 people per square mile [16.32 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 Spencer. You need to be careful when making such a comparison, the differences are likely to lead to an apple-to-oranges comparison. More information about the nature of these differences can be found in the section Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, Spencer had 574 Housing Units<3> and with its population of 1,581 people, this averages 2.75 people per Housing Unit.
The 2010 Census shows Spencer had a land area of 31.39 square miles [81.3 km²]. This translates to 18.17 Housing Units per square mile [7.01 housing units/km²].
From the Census of 2000: Spencer had 496 Housing Units, a population of 1,341 people and a land area of 31.52 square miles [81.6 km²]. This gives a density of 2.7 people per Housing Unit and 15.64 Housing Units per square mile [6.04 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 Spencer and you need to be careful when comparing results between the censuses. More information about the nature of these the changes can be found in the section called Census-to-Census Observations ... (see below).
Marathon County ...
The community of Spencer is located in Marathon County.
The county had a population of 134,063 people at the 2010 Census. With it's population of 1,581 people, Spencer represented 1.18% of the county's total.
In addition, where the community of Spencer has a population density of 50 people per square mile [19.32 people/km²], Marathon County averages 86.8 people per square mile [33.5 people/km²].
For more information, please visit our Census Page for Marathon County.
Population Rings for Spencer ...
To help identify the number of people who live in Spencer and the surrounding area, we have drawn concentric rings centered on Spencer. We counted the number of communities within each ring and summed their populations.<4>
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for Spencer, 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 Spencer. 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 Spencer was 31.6 square miles [81.8 km²]. Of this total, 31.39 square miles [81.3 km²] is land, with the balance (0.65%) being water (0.2 square miles [0.5 km²]).
The 2000 Census shows a total area of 31.72 square miles [82.2 km²]. Of this total, 31.52 square miles [81.6 km²] is land, with the balance (0.63%) being water (0.2 square miles [0.5 km²]).
While generally coinciding with the GPS location (latitude/longitude) of Spencer, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Spencer.
For the 2010 Census, the location was given as:
Lat: 44.725252° (or 44°43'30" N) [Map]
For the 2000 Census, the location given was:
Lat: 44.731293° (or 44°43'52" N) [Map]
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 6,081 feet to the east<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 (#1584184) to Spencer. This identifier also marks a GSP point on the map, and that point lies within the boundaries of Spencer. The GNIS point has been mapped to the latitude/longitude:
Lat: 44.727742° (or 44°43'39" N) [Map]
The GSP location given for the 2010 Census lies 2,233 feet to the southeast<6> of the point given by the GNIS for Spencer. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Spencer.
Miscellaneous Information for Spencer ...
The Federal government has assigned various identifying codes to each community, county and state. At one time or another, the US Census Bureau has used one (or more) of the following identifiers when referring to either Marathon County or the community of Spencer:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Spencer:
GNIS ID for Spencer: 1584184
The FIPS Codes ...
An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
State Code: 55 (Wisconsin)
County Code: 073 (Marathon County)
Place Code: 75425 (Spencer)
Misc. Census Codes ...
Spencer 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 Spencer.
Other Roadside Stops ...
Off-the-Road Links ...
The official website of the U.S. Census Bureau
Unfortunately, we don't know of a website for Spencer. If you can help, please contact us through our Feedback Page.
The official website for Marathon County: www.co.marathon.wi.us/
The official website for State of Wisconsin: https://www.wisconsin.gov/
The official website of the U.S. Board on Geographic Names (BGN)
The official website of the U.S. Geological Survey (USGS)
Please keep in mind that we can not guarantee the accuracy or timeliness of the information on this website, so use with care. We encourage you to double-check the information that is critical to you.
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This page was last modified: 26 Jan 2020