Census Data for West Allis ...
The most recent Census Estimate<1> was for 2017 and it gives West Allis a population of 59,934 people.
The last Decennial Census<2> was in 2010, giving West Allis a population of 60,411 people.
The city of West Allis is located in Milwaukee County. The 2010 Census gave Milwaukee County a population of 947,735 people. This means that West Allis had 6.37% of the county's total population, making it Milwaukee's 2nd most populous community.
At the same time, Wisconsin had a population of 5,686,986 people, meaning that West Allis had 1.06% of the total population of Wisconsin - making it the state's 11th most populous community.
When the Census Bureau conducts a census for a city like West Allis, 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 city.
Things like the population, area and housing for West Allis reflect the sampling area. Since the shape of the sampling area and the actual boundaries of West Allis 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 West Allis has a total area of 11.41 square miles [29.5 km²]. Of this total, a small amount of the area is covered by water (0.02 square miles [0.1 km²]).
Milwaukee County has a land area of 241.4 square miles [625.2 km²]. At 11.39 square miles [29.5 km²], West Allis has 4.72% 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° 0' 25" (or 43.01°) [Map]
Lon: -88° 1' 44" (or -88.03°)
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 (60,411 people) and land area (11.39 square miles [29.5 km²]) values from the 2010 Census, West Allis had a population density of 5,295 people per square mile [2,044 people/km²].
In comparison, the 2000 Census shows West Allis had a population of 61,254 people and a land area of 11.35 square miles [29.4 km²]. This gives a population density of 5,386 people per square mile [2,079 people/km²]
NOTE: Be aware that when comparing population density between the 2000 Census and the 2010 Census, there were changes in the sampling area for West Allis. You need to be careful when making such a comparison, the differences are likely to lead to a questionable 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, West Allis had 29,353 Housing Units<3> and with its population of 60,411 people, this averages 2.06 people per Housing Unit.
The 2010 Census shows West Allis had a land area of 11.39 square miles [29.5 km²]. This translates to 2,573 Housing Units per square mile [993 housing units/km²].
From the Census of 2000: West Allis had 28,708 Housing Units, a population of 61,254 people and a land area of 11.35 square miles [29.4 km²]. This gives a density of 2.13 people per Housing Unit and 2,524 Housing Units per square mile [974 housing units/km²].
NOTE: Repeating the caution above (under Population Density), be aware that when comparing Housing Units between the 2000 and the 2010 Census, there were changes in the sampling area for West Allis and you need to be careful when comparing numbers 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).
Milwaukee County ...
The community of West Allis is located in Milwaukee County.
The county had a population of 947,735 people at the 2010 Census. With it's population of 60,411 people, West Allis represented 6.37% of the county's total.
In addition, where the city of West Allis has a population density of 5,295 people per square mile [2,044 people/km²], Milwaukee County averages 3,925 people per square mile [1,515 people/km²].
For more information, please visit our Census Page for Milwaukee County.
Population Rings for West Allis ...
To help identify the number of people who live in West Allis and the surrounding area, we have drawn concentric rings centered on West Allis. We counted the number of communities within each ring and summed their populations.<4>
| Radius ||No of|
|5 mi [8 km]||10||850,302||+0.3%|
|10 mi [16 km]||23||1,154,543||+0.83%|
|15 mi [24 km]||40||1,306,574||+0.99%|
|20 mi [32 km]||63||1,442,645||+1.13%|
|25 mi [40 km]||87||1,667,731||+1.15%|
|30 mi [48 km]||115||1,888,845||+0.84%|
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for West Allis, 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 West Allis. 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 West Allis was 11.41 square miles [29.5 km²]. Of this total, only a minor amount of the area is covered by water.
The 2000 Census shows a total area of 11.37 square miles [29.5 km²]. Of this total, only a minor amount of the area is covered by water.
While generally coinciding with the GPS location (latitude/longitude) of West Allis, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for West Allis.
For the 2010 Census, the location was given as:
Lat: 43.007186° (or 43°0'25" N) [Map]
Lon: -88.028986° (or -88°1'44" W)
For the 2000 Census, the location given was:
Lat: 43.008114° (or 43°0'29" N) [Map]
Lon: -88.018353° (or -88°1'6" W)
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 2,854 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 (#1584397) to West Allis. This identifier also marks a GSP point on the map, and that point lies within the boundaries of West Allis. The GNIS point has been mapped to the latitude/longitude:
Lat: 43.007236° (or 43°0'26" N) [Map]
Lon: -88.030088° (or -88°1'48" W)
The GSP location given for the 2010 Census lies 294.4 feet to the east<6> of the point given by the GNIS for West Allis. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for West Allis.
Miscellaneous Information for West Allis ...
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 Milwaukee County or the city of West Allis:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to West Allis:
GNIS ID for West Allis: 1584397
GNIS ID for Milwaukee County: 1581100
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: 079 (Milwaukee County)
Place Code: 85300 (West Allis)
State & County Code: 55/079 (Wisconsin / Milwaukee County)
State & Place Code: 55/85300 (Wisconsin / West Allis)
Misc. Census Codes ...
West Allis 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 West Allis.
|<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.|
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|<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.|
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|<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).|
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|<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.|
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|<5>||The calculated bearing (or angle) to the 2010 Census location is 96 degrees and a distance of 2,854 feet.|
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|<6>||The calculated bearing (or angle) to the GNIS point is 266 degrees and a distance of 294.4 feet.|
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For additional information, please visit our Glossary for West Allis.