Census Data for Irondale
Population ...
The most recent Census Estimate<1> was for 2019 and it gave Irondale a population of 13,122 people.
The last Decennial Census<2> was in 2010, which gave 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.
Area ...
The 2010 Census shows that the sampling area 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.
- Continue Reading ...
- 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 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 city.
- Things like population, area and housing for Irondale reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Irondale 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: 33° 32' 23" (or 33.54°)
- Lon: -86° 39' 42" (or -86.66°)
- 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).
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.
- Continue Reading ...
- 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 2010 and the 2000 Census, there were changes in the sampling area for Irondale and you need to be careful when comparing 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<4>.
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.
Census-to-Census Observations ...
Introduction ...
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.
- Continue Reading ...
- Although we don't have specific information about the shape of the polygon for Irondale 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 Irondale, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Irondale.
- Continue Reading ...
- 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 GPS 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 GPS 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 used one (or more) of the following identifiers when referring to either Jefferson County or the city of Irondale:
- The GNIS Codes ...
- 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.
Off-the-Road Links ...
The official website for Irondale: www.cityofirondale.org/
The official website for Jefferson County: www.jeffcointouch.com/
The official website for State of Alabama: https://www.alabama.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)
Footnotes ...
| <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 2019. |
| <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. |
| <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). |
| <4> | If you're interested in how the shape of Alabama's counties, including Jefferson, have changed over time, we recommend the Atlas of Historical County Boundaries. |
| <5> | The calculated bearing (or angle) to the 2010 Census location is 291 degrees and a distance of 8,184 feet. |
| <6> | The calculated bearing (or angle) to the GNIS point is 296 degrees and a distance of 5,165 feet. |