Census Data for Sister Bay

Population ...

The most recent Census Estimate<1> was for 2019 and it gave Sister Bay a population of 928 people.

The last Decennial Census<2> was in 2010, which gave Sister Bay a population of 876 people.

The village of Sister Bay is located in Door County. The 2010 Census gave Door County; a population of 27,785 people. This means that Sister Bay had 3.15% of the county's total population, making it Door's 12th most populous community.

At the same time, Wisconsin had a population of 5,686,986 people, meaning that Sister Bay had 0.02% of the total population of Wisconsin - making it the state's 992nd most populous community.

Area ...

The 2010 Census shows that the sampling area for Sister Bay has a total area of 3.58 square miles [9.3 km²]. Of this total, 2.58 square miles [6.7 km²] is land, with the balance (27.94%) being water (1 square miles [2.6 km²]).

Door County has a land area of 482 square miles [1,248.3 km²]. At 2.58 square miles [6.7 km²], Sister Bay has 0.53% of the county's total land area.

• Continue Reading ...
  • When the Census Bureau conducts a census for a village like Sister Bay, they draw a boundary around the area in which they are going to conduct their count - this defines the sampling area (usually 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 village.
  • Things like population, area and housing for Sister Bay reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Sister Bay might be different, it's best to check with the U.S. Census Bureau to resolve any difference between the two.
  • 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:   45° 11' 13"   (or 45.19°)
  • Lon:   -87° 7' 45"   (or -87.13°)
  • 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).

Door County ...

The community of Sister Bay is located in Door County<3>.

The county had a population of 27,785 people at the 2010 Census. With it's population of 876 people, Sister Bay represented 3.15% of the county's total.

In addition, where the village of Sister Bay has a population density of 245 people per square mile [94.6 people/km²], Door County averages 57.6 people per square mile [22.26 people/km²].

For more information, please visit our Census Page for Door County.

Census-to-Census Observations ...

Introduction ...

When the Census Bureau takes a census count (or enumeration) for Sister Bay, 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 Sister Bay. It's important to note that from one Census to the next, the shape and location of the polygon can change.

• Continue Reading ...
  • Although we don't have specific information about the shape of the polygon for Sister Bay or how it changed has over time, there is some information that can give us some hints. For example, since the shape of the sampling area is directly related to the shape of the polygon, any change to area probably indicates a new shape for the polygon.
  • If you need precision or details about the methodology of the Census, you should visit the U.S. Census Bureau for a definitive answer.

Location ...

While generally coinciding with the GPS location (latitude/longitude) of Sister Bay, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Sister Bay.

• Continue Reading ...
  • For the 2010 Census, the location was given as:
  • Lat:   45.187097°   (or 45°11'13" N)
  • Lon:   -87.129354°   (or -87°7'45" W)
  • For the 2000 Census, the location given was:
  • Lat:   45.187192°   (or 45°11'13" N)
  • Lon:   -87.123852°   (or -87°7'25" W)
  • The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 1,414 feet to the west<4> 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 (#1584166) to Sister Bay. This identifier also marks a GPS point on the map, and that point lies within the boundaries of Sister Bay. The GNIS point has been mapped to the latitude/longitude:
  • Lat:   45.186933°   (or 45°11'12" N)
  • Lon:   -87.127612°   (or -87°7'39" W)
  • The GPS location given for the 2010 Census lies 451.6 feet to the west<5> of the point given by the GNIS for Sister Bay. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Sister Bay.

Miscellaneous Information for Sister Bay ...

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 Door County or the village of Sister Bay:

• The GNIS Codes ...
  • The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Sister Bay:
  • GNIS ID for Sister Bay: 1584166
  • GNIS ID for Door County: 1581074
  • GNIS ID for State of 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: 029 (Door County)
  • Place Code: 74225 (Sister Bay)
  • State & County Code: 55/029 (Wisconsin / Door County)
  • State & Place Code: 55/74225 (Wisconsin / Sister Bay)

• Misc. Census Codes ...
  • Sister Bay is located in Census Region #2 (the Midwest Region) and Division #3 (the East North-Central Division).

• The US Postal Service ZIP Code ...
  • While some people have used a ZIP code to identify a community, the purpose of the ZIP code was to make mail delivery more efficient by grouping addresses together. Although the ZIP Code doesn't specifically identify a village like Sister Bay, it does identify addresses that are in (or near) Sister Bay. It's important to remember that the boundaries of a ZIP Code can be changed, re-assigned or overlapped with other ZIP Codes.
  • The ZIP code for Sister Bay:54234<6>

• Census ZCTA Codes ...
  • The US Census Bureau created statistical entities that they call ZIP Code Tabulation Areas (ZCTAs) and these ZCTAs are frequently confused with the ZIP codes that come from the US Postal Service (USPS).
  • ZCTAs were first created for the 2000 Census and at that time, they were based upon the USPS ZIP codes. While largely covering the same areas, the boundaries of a ZCTA do not necessarily match the boundaries of a postal ZIP code with the same number. For example, while a postal ZIP code can cross a county or state line, a Census ZCTA can not. They should be treated as separate entities with no correlation between them.

For more information about the various Federal identification codes, please visit our Misc Page for Sister Bay.

Off-the-Road Links ...

Unfortunately, we don't know of a website for Sister Bay. If you can help, please contact us through our Feedback Page.

The official website for Door County: www.co.door.wi.gov/

The official website for State of Wisconsin: https://www.wisconsin.gov/

The official website of the U.S. Census Bureau

The official website of the U.S. Board on Geographic Names (BGN)

The official website of the U.S. Geological Survey (USGS)