A Gazetteer for the United States and Canada
Census Data for Riverdale ...
The most recent Census Estimate<1> was for 2017 and it gave Riverdale a population of 182 people.
The last Decennial Census<2> was in 2010, which gave Riverdale a population of 182 people.
The village of Riverdale is located in Buffalo County. The 2010 Census gave Buffalo County a population of 46,102 people. This means that Riverdale had 0.39% of the county's total population, making it Buffalo's 8th most populous community.
At the same time, Nebraska had a population of 1,826,341 people.
When the Census Bureau conducts a census for a village like Riverdale, 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 village.
Things like the population, area and housing for Riverdale reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Riverdale 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 Riverdale has a total area of 0.26 square miles [0.7 km²].
Buffalo County has a land area of 968 square miles [2,507.4 km²]. At 0.26 square miles [0.7 km²], Riverdale has 0.03% 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: 40° 47' 1" (or 40.78°) [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 (182 people) and land area (0.26 square miles [0.7 km²]) values from the 2010 Census, Riverdale had a population density of 689 people per square mile [266.2 people/km²].
In comparison, the 2000 Census shows Riverdale had a population of 213 people and a land area of 0.26 square miles [0.7 km²]. This gives a population density of 806 people per square mile [311.2 people/km²]
NOTE: Be aware that when comparing population density between the 2000 and the 2010 Census, there were changes in the sampling area for Riverdale. 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 differences can be found in the section Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, Riverdale had 88 Housing Units<3> and with its population of 182 people, this averages 2.07 people per Housing Unit.
The 2010 Census shows Riverdale had a land area of 0.26 square miles [0.7 km²]. This translates to 333.3 Housing Units per square mile [128.7 housing units/km²].
From the Census of 2000: Riverdale had 84 Housing Units, a population of 213 people and a land area of 0.26 square miles [0.7 km²]. This gives a density of 2.54 people per Housing Unit and 317.9 Housing Units per square mile [122.7 housing units/km²].
NOTE: Repeating the caution above (under Population Density), be aware that when comparing Housing Units between the 2000 Census and the 2010 Census, there were changes in the sampling area for Riverdale 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).
Buffalo County ...
The community of Riverdale is located in Buffalo County.
The county had a population of 46,102 people at the 2010 Census. With it's population of 182 people, Riverdale represented 0.39% of the county's total.
In addition, where the village of Riverdale has a population density of 689 people per square mile [266.2 people/km²], Buffalo County averages 47.62 people per square mile [18.39 people/km²].
For more information, please visit our Census Page for Buffalo County.
Population Rings for Riverdale ...
To help identify the number of people who live in Riverdale and the surrounding area, we have drawn concentric rings centered on Riverdale. 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 Riverdale, 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 Riverdale. 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 Riverdale was 0.26 square miles [0.7 km²]. Of this total, only a minor amount of the area is covered by water.
The 2000 Census shows a total area of 0.26 square miles [0.7 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 Riverdale, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Riverdale.
For the 2010 Census, the location was given as:
Lat: 40.783887° (or 40°47'1" N) [Map]
For the 2000 Census, the location given was:
Lat: 40.784503° (or 40°47'4" N) [Map]
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 417.7 feet to the southeast<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 (#2399087) to Riverdale. This identifier also marks a GSP point on the map, and that point lies within the boundaries of Riverdale. The GNIS point has been mapped to the latitude/longitude:
Lat: 40.783887° (or 40°47'1" N) [Map]
The GSP location given for the 2010 Census lies 0.91 feet to the southeast<6> of the point given by the GNIS for Riverdale. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Riverdale.
Miscellaneous Information for Riverdale ...
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 Buffalo County or the village of Riverdale:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Riverdale:
GNIS ID for Riverdale: 2399087
The FIPS Codes ...
An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
State Code: 31 (Nebraska)
County Code: 019 (Buffalo County)
Place Code: 41515 (Riverdale)
Misc. Census Codes ...
Riverdale is located in Census Region #2 (the Midwest Region) and Division #4 (the West North-Central Division).
For more information about the various Federal identification codes, please visit our Misc Page for Riverdale.
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 Riverdale. If you can help, please contact us through our Feedback Page.
The official website for Buffalo County: www.buffalogov.org/
The official website for State of Nebraska: www.nebraska.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: 11 Mar 2019