Census Data for North Johns ...
The most recent Census Estimate<1> was for 2015 and it gives North Johns a population of 142 people.
The last Decennial Census<2> was in 2010, giving North Johns a population of 145 people.
The town of North Johns is located in Jefferson County. The 2010 Census gave Jefferson County a population of 658,466 people. This means that North Johns had 0.02% of the county's total population, making it Jefferson's 33rd most populous community.
At the same time, Alabama had a population of 4,779,736 people.
When the Census Bureau conducts a census for a town like North Johns, 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 town.
Things like the population, area and housing for North Johns reflect the sampling area. Since the shape of the sampling area and the actual boundaries of&$160;North Johns 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 North Johns has a total area of 0.2 square miles [0.5 km²].
Jefferson County has a land area of 1,111 square miles [2,878.2 km²]. At 0.2 square miles [0.5 km²], North Johns has 0.02% 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: 33° 22' 0" (or 33.37°)
Lon: -87° 6' 5" (or -87.1°)
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 (145 people) and land area (0.2 square miles [0.5 km²]) values from the 2010 Census, North Johns had a population density of 714 people per square mile [275.8 people/km²].
In comparison, the 2000 Census shows North Johns had a population of 142 people and a land area of 0.19 square miles [0.5 km²]. This gives a population density of 732 people per square mile [282.8 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 North Johns. You need to be careful when making such a comparison, the differences are likely to lead to an incorrect comparison. More information about the nature of these changes can be found in the section Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, North Johns had 64 Housing Units<3> and with its population of 145 people, this averages 2.27 people per Housing Unit.
The 2010 Census shows North Johns had a land area of 0.2 square miles [0.5 km²]. This translates to 315.3 Housing Units per square mile [121.7 housing units/km²].
From the Census of 2000: North Johns had 56 Housing Units, a population of 142 people and a land area of 0.19 square miles [0.5 km²]. This gives a density of 2.54 people per Housing Unit and 288.8 Housing Units per square mile [111.5 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 North Johns 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).
Jefferson County ...
The community of North Johns is located in Jefferson County.
The county had a population of 658,466 people at the 2010 Census. With it's population of 145 people, North Johns represented 0.02% of the county's total.
In addition, where the town of North Johns has a population density of 714 people per square mile [275.8 people/km²], Jefferson County averages 592 people per square mile [228.8 people/km²].
For more information, please visit our Census Page for Jefferson County.
Population Rings for North Johns ...
To help identify the number of people who live in North Johns and the surrounding area, we have drawn concentric rings centered on North Johns. We counted the number of communities within each ring and summed their populations.<4>
|5 mi [8 km]||2||15,852||-2.45%|
|10 mi [16 km]||6||49,713||-2.15%|
|15 mi [24 km]||16||101,965||+0.22%|
|20 mi [32 km]||26||490,742||+1.69%|
|25 mi [40 km]||36||573,639||+1.63%|
|30 mi [48 km]||50||782,743||+2.79%|
US Census QuickFacts ...
The Census Bureau has created documents containing demographic information called QuickFacts. Although they haven't created a QuickFact for North Johns, there are QuickFacts available for the following nearby communities:
For more about neighboring communities, please visit our Nearby Page for North Johns. For an expanded list of the communities that are closest to North Johns, see our County-by-County Page for North Johns.
A Census QuickFact is available for Jefferson County (QF-01073).
Below are QuickFacts for the counties that border Jefferson County.
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for North Johns, 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 North Johns. 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.
The sampling area (or polygon) given for the 2010 Census is 4.69% larger than the 2000 Census.
The 2010 Census shows that the total area for North Johns was 0.2 square miles [0.5 km²]. Of this total, only a minor amount of the area is covered by water.
The 2000 Census shows a total area of 0.19 square miles [0.5 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 North Johns, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for North Johns.
For the 2010 Census, the location was given as:
Lat: 33.368055° (or 33°22'4" N)
Lon: -87.100888° (or -87°6'3" W)
For the 2000 Census, the location given was:
Lat: 33.366880° (or 33°22'0" N)
Lon: -87.101486° (or -87°6'5" W)
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 465.5 feet to the northeast<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 (#2407006) to North Johns. This identifier also marks a GSP point on the map, and that point lies within the boundaries of North Johns. The GNIS point has been mapped to the latitude/longitude:
Lat: 33.368032° (or 33°22'4" N)
Lon: -87.100895° (or -87°6'3" W)
The GSP location given for the 2010 Census lies 8.65 feet to the north<6> of the point given by the GNIS for North Johns. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for North Johns.
Miscellaneous Information for North Johns ...
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 Jefferson County or the town of North Johns:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to North Johns:
GNIS ID for North Johns: 2407006
GNIS ID for Jefferson County: 161562
GNIS ID for Alabama: 1779775
The FIPS Codes ...
An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
State Code: 01 (Alabama)
County Code: 073 (Jefferson County)
Place Code: 55152 (North Johns)
State & County Code: 01/073 (Alabama / Jefferson County)
State & Place Code: 01/55152 (Alabama / North Johns)
Misc. Census Codes ...
North Johns is located in Census Region #3 (the South Region) and Division #6 (the East South-Central Division).
For more information about the various Federal identification codes, please visit our Misc Page for North Johns.
|<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 2015.|
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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 the angle) to the 2010 Census location is 336 degrees.|
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|<6>||The calculated bearing (or the angle) to the GNIS point is 345 degrees.|
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For additional information, please visit our Glossary for North Johns.