Census Data for Irondale ...
The most recent Census Estimate<1> was for 2015 and it gives Irondale a population of 12,423 people.
The last Decennial Census<2> was in 2010, giving Irondale a population of 12,349 people.
The city of Irondale is located in Jefferson County. The 2010 Census gave Jefferson County a population of 658,466 people. This means that Irondale had 1.88% of the county's total population, making it Jefferson's 11th most populous community.
At the same time, Alabama had a population of 4,779,736 people, meaning that Irondale had 0.26% of the total population of Alabama - making it the state's 54th most populous community.
When the Census Bureau conducts a census for a city like Irondale, 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 Irondale reflect the sampling area. Since the shape of the sampling area and the actual boundaries of&$160;Irondale 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 Irondale has a total area of 17.47 square miles [45.2 km²]. Of this total, a small amount of the area is covered by water (0.16 square miles [0.4 km²]).
Jefferson County has a land area of 1,111 square miles [2,878.2 km²]. At 17.31 square miles [44.8 km²], Irondale has 1.56% 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° 31' 54" (or 33.53°)
Lon: -86° 41' 12" (or -86.69°)
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 (12,349 people) and land area (17.31 square miles [44.8 km²]) values from the 2010 Census, Irondale had a population density of 706 people per square mile [272.9 people/km²].
In comparison, the 2000 Census shows Irondale had a population of 9,813 people and a land area of 8.97 square miles [23.2 km²]. This gives a population density of 1,092 people per square mile [422 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 Irondale. 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 these differences can be found in the section Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, Irondale had 5,495 Housing Units<3> and with its population of 12,349 people, this averages 2.25 people per Housing Unit.
The 2010 Census shows Irondale had a land area of 17.31 square miles [44.8 km²]. This translates to 314.5 Housing Units per square mile [121.4 housing units/km²].
From the Census of 2000: Irondale had 4,212 Housing Units, a population of 9,813 people and a land area of 8.97 square miles [23.2 km²]. This gives a density of 2.33 people per Housing Unit and 469.1 Housing Units per square mile [181.1 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 Irondale 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).
Jefferson County ...
The community of Irondale is located in Jefferson County.
The county had a population of 658,466 people at the 2010 Census. With it's population of 12,349 people, Irondale represented 1.88% of the county's total.
In addition, where the city of Irondale has a population density of 706 people per square mile [272.9 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 Irondale ...
To help identify the number of people who live in Irondale and the surrounding area, we have drawn concentric rings centered on Irondale. We counted the number of communities within each ring and summed their populations.<4>
|5 mi [8 km]||2||33,114||+1.07%|
|10 mi [16 km]||11||377,767||+0.8%|
|15 mi [24 km]||24||563,722||+1.9%|
|20 mi [32 km]||44||653,874||+1.82%|
|25 mi [40 km]||53||730,000||+2.17%|
|30 mi [48 km]||66||765,506||+2.32%|
US Census QuickFacts ...
The Census Bureau has created documents containing demographic information called QuickFacts. Although they don't create QuickFacts for all communities, they do have one for Irondale. Not only does the QuickFact have details about Irondale, it also contains a comparison between Irondale and the state of Alabama.
Click here for the Irondale QuickFact (QF-0137864).
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for Irondale, 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 Irondale. 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 94.59% larger than the 2000 Census.
The 2010 Census shows that the total area for Irondale was 17.47 square miles [45.2 km²]. Of this total, 17.31 square miles [44.8 km²] is land, with the balance (0.93%) being water (0.16 square miles [0.4 km²]).
The 2000 Census shows a total area of 8.98 square miles [23.3 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 Irondale, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Irondale.
For the 2010 Census, the location was given as:
Lat: 33.539995° (or 33°32'23" N)
Lon: -86.661677° (or -86°39'42" W)
For the 2000 Census, the location given was:
Lat: 33.531939° (or 33°31'54" N)
Lon: -86.686816° (or -86°41'12" W)
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 8,184 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 (#2404765) to Irondale. This identifier also marks a GSP point on the map, and that point lies within the boundaries of Irondale. The GNIS point has been mapped to the latitude/longitude:
Lat: 33.533777° (or 33°32'1" N)
Lon: -86.676950° (or -86°40'37" W)
The GSP location given for the 2010 Census lies 5,165 feet to the northeast<6> of the point given by the GNIS for Irondale. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Irondale.
Miscellaneous Information for Irondale ...
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 city of Irondale:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Irondale:
GNIS ID for Irondale: 2404765
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: 37864 (Irondale)
State & County Code: 01/073 (Alabama / Jefferson County)
State & Place Code: 01/37864 (Alabama / Irondale)
Misc. Census Codes ...
Irondale 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 Irondale.
|<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 291 degrees.|
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|<6>||The calculated bearing (or the angle) to the GNIS point is 296 degrees.|
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For additional information, please visit our Glossary for Irondale.