RoadsideThoughts
A Gazetteer for the United States and Canada
Home >> State of Pennsylvania >> Allegheny County >> Dormont >> Census DataIndex...










Learn About
The Commemorative
Quarter for
Pennsylvania


The Commemorative Quarter for Pennsylvania







Census Data for Dormont

Population ...

The most recent Census Estimate<1> was for 2019 and it gave Dormont a population of 8,282 people.

The last Decennial Census<2> was in 2010, which gave Dormont a population of 8,593 people.

The community of Dormont is located in Allegheny County. The 2010 Census gave Allegheny County; a population of 1,223,348 people. This means that Dormont had 0.7% of the county's total population, making it Allegheny's 15th most populous community.

At the same time, Pennsylvania had a population of 12,702,379 people, meaning that Dormont had 0.07% of the total population of Pennsylvania - making it the state's 89th most populous community.

Area ...

The 2010 Census shows that the sampling area for Dormont has a total area of 0.76 square miles [2 km²].

Allegheny County has a land area of 730 square miles [1,890.9 km²]. At 0.76 square miles [2 km²], Dormont has 0.1% of the county's total land area.

  • Continue Reading ...
    • When the Census Bureau conducts a census for a community like Dormont, 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 community.
    • Things like population, area and housing for Dormont reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Dormont 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:   40° 23' 38"   (or 40.39°)
    • Lon:   -80° 2' 15"   (or -80.04°)
    • 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, Dormont had 4,308 Housing Units<3> and with its population of 8,593 people, this averages 1.99 people per Housing Unit.

  • Continue Reading ...
    • The 2010 Census shows Dormont had a land area of 0.76 square miles [2 km²]. This translates to 5,668 Housing Units per square mile [2,188 housing units/km²].
    • From the Census of 2000: Dormont had 4,287 Housing Units, a population of 9,305 people and a land area of 0.74 square miles [1.9 km²]. This gives a density of 2.17 people per Housing Unit and 5,788 Housing Units per square mile [2,234 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 Dormont and you need to be careful when comparing between the censuses. More information about these differences can be found in the section called Census-to-Census Observations ... (see below).

Allegheny County ...

Dormont is located in Allegheny County<4>.

The county had a population of 1,223,348 people at the 2010 Census. With it's population of 8,593 people, Dormont represented 0.7% of the county's total.

In addition, where the community of Dormont has a population density of 11,306 people per square mile [4,365 people/km²], Allegheny County averages 1,675 people per square mile [646 people/km²].

For more information, please visit our Census Page for Allegheny County.

Census-to-Census Observations ...

Introduction ...

When the Census Bureau takes a census count (or enumeration) for Dormont, 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 Dormont. 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 Dormont 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 Dormont, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Dormont.

  • Continue Reading ...
    • For the 2010 Census, the location was given as:
    • Lat:   40.394046°   (or 40°23'38" N)
    • Lon:   -80.037708°   (or -80°2'15" W)
    • For the 2000 Census, the location given was:
    • Lat:   40.393646°   (or 40°23'37" N)
    • Lon:   -80.037466°   (or -80°2'14" W)
    • The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 160.6 feet to the northwest<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 (#1214786) to Dormont. This identifier also marks a GPS point on the map, and that point lies within the boundaries of Dormont. The GNIS point has been mapped to the latitude/longitude:
    • Lat:   40.393680°   (or 40°23'37" N)
    • Lon:   -80.036165°   (or -80°2'10" W)
    • The GPS location given for the 2010 Census lies 448.7 feet to the west<6> of the point given by the GNIS for Dormont. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Dormont.

Miscellaneous Information for Dormont ...

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 Allegheny County or the community of Dormont:

  • The GNIS Codes ...
    • The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Dormont:
    • GNIS ID for Dormont: 1214786
    • GNIS ID for Allegheny County: 1213657
    • GNIS ID for State of Pennsylvania: 1779798
  • Misc. Census Codes ...
    • Dormont is located in Census Region #1 (the Northeast Region) and Division #2 (the Middle Atlantic Division).

For more information about the various Federal identification codes, please visit our Misc Page for Dormont.

The official website for Dormont: www.boro.dormont.pa.us/

The official website for Allegheny County: www.county.allegheny.pa.us/

The official website for State of Pennsylvania: https://www.pa.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 Pennsylvania's counties, including Allegheny, have changed over time, we recommend the Atlas of Historical County Boundaries.
<5>The calculated bearing (or angle) to the 2010 Census location is 24 degrees and a distance of 160.6 feet.
<6>The calculated bearing (or angle) to the GNIS point is 72 degrees and a distance of 448.7 feet.









 

Copyright 2024
All Rights Reserved

Thank you for visiting our website.

In closing, 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.

If you've found an error or have additional information that you would like to share, please don't hesitate to write: Click here to contact us.

This page was last modified/updated: 10 Mar 2024