A Gazetteer for the United States and Canada
Census Data for Rosa ...
The most recent Census Estimate<1> was for 2017 and it gave Rosa a population of 319 people.
The last Decennial Census<2> was in 2010, which gave Rosa a population of 316 people.
The town of Rosa is located in Blount County. The 2010 Census gave Blount County a population of 57,322 people. This means that Rosa had 0.55% of the county's total population, making it Blount's 11th 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 Rosa, they draw a boundary around the area in which they are going to conduct their count - this defines the sampling area (usually shaped as 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 Rosa reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Rosa might be different, it's best to check with the U.S. Census Bureau to resolve any difference between the two.
The 2010 Census shows that the sampling area for Rosa has a total area of 3.77 square miles [9.8 km²]. Of this total, a small amount of the area is covered by water (0 square miles [0 km²]).
Blount County has a land area of 644 square miles [1,670 km²]. At 3.77 square miles [9.8 km²], Rosa has 0.58% 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 the center of the polygon, known as the centroid). At the time of the 2010 Census, the sampling area was located at:
Lat: 33° 59' 33" (or 33.99°) [Map]
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 (316 people) and land area (3.77 square miles [9.8 km²]) values from the 2010 Census, Rosa had a population density of 83.7 people per square mile [32.33 people/km²].
In comparison, the 2000 Census shows Rosa had a population of 313 people and a land area of 3.78 square miles [9.8 km²]. This gives a population density of 82.7 people per square mile [31.94 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 Rosa. You need to be careful when making such a comparison, the differences are likely to lead to an incorrect comparison. More information about the changes can be found in the section Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, Rosa had 136 Housing Units<3> and with its population of 316 people, this averages 2.32 people per Housing Unit.
The 2010 Census shows Rosa had a land area of 3.77 square miles [9.8 km²]. This translates to 36.04 Housing Units per square mile [13.91 housing units/km²].
Blount County ...
The town of Rosa is located in Blount County.
The county had a population of 57,322 people at the 2010 Census. With it's population of 316 people, Rosa represented 0.55% of the county's total.
For more information, please visit our Census Page for Blount County.
Population Rings for Rosa ...
To help identify the number of people who live in Rosa and the surrounding area, we have drawn concentric rings centered on Rosa. We counted the number of communities within each ring and summed their populations.<4>
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for Rosa, 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 Rosa. 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 Rosa was 3.77 square miles [9.8 km²]. Of this total, only a minor amount of the area is covered by water.
The 2000 Census shows a total area of 3.78 square miles [9.8 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 Rosa, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Rosa.
For the 2010 Census, the location was given as:
Lat: 33.992756° (or 33°59'33" N) [Map]
For the 2000 Census, the location given was:
Lat: 33.989810° (or 33°59'23" N) [Map]
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 3,671 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 (#2407242) to Rosa. This identifier also marks a GSP point on the map, and that point lies within the boundaries of Rosa. The GNIS point has been mapped to the latitude/longitude:
Lat: 33.988528° (or 33°59'18" N) [Map]
The GSP location given for the 2010 Census lies 1,831 feet to the northeast<6> of the point given by the GNIS for Rosa. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Rosa.
Miscellaneous Information for Rosa ...
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 Blount County or the town of Rosa:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Rosa:
GNIS ID for Rosa: 2407242
The FIPS Codes ...
An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
State Code: 01 (Alabama)
County Code: 009 (Blount County)
Place Code: 66408 (Rosa)
Misc. Census Codes ...
Rosa 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 Rosa.
Other Roadside Stops ...
Off-the-Road Links ...
The official website of the U.S. Census Bureau
Unfortunately, we don't know of a website for Rosa. If you can help, please contact us through our Feedback Page.
The official website for Blount County: www.co.blount.al.us/
The official website for State of Alabama: https://www.alabama.gov/
The official website of the U.S. Board on Geographic Names (BGN)
The official website of the U.S. Geological Survey (USGS)
Please keep in mind that we can not guarantee the accuracy or timeliness of the information on this website, so use with care. We encourage you to double-check the information that is critical to you.
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This page was last modified: 19 Jan 2019