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South Mountain, Texas

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Census Data for South Mountain ...

Population ...

The most recent Census Estimate<1> was for 2018 and it gave South Mountain a population of 360 people.

The last Decennial Census<2> was in 2010, which gave South Mountain a population of 384 people.

The town of South Mountain is located in Coryell County. The 2010 Census gave Coryell County a population of 75,388 people. This means that South Mountain had 0.51% of the county's total population, making it Coryell's 5th most populous community.

At the same time, Texas had a population of 25,145,561 people.

Area ...

When the Census Bureau conducts a census for a town like South Mountain, 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 South Mountain reflect the sampling area. Since the shape of the sampling area and the actual boundaries of South Mountain 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 South Mountain has a total area of 1.61 square miles [4.2 km²].

Coryell County has a land area of 1,052 square miles [2,724.8 km²]. At 1.61 square miles [4.2 km²], South Mountain has 0.15% 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:   31° 26' 23"   (or 31.44°)             [Map]

Lon:   -97° 40' 45"   (or -97.68°)

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 (384 people) and land area (1.61 square miles [4.2 km²]) values from the 2010 Census, South Mountain had a population density of 238.1 people per square mile [91.9 people/km²].

In comparison, the 2000 Census shows South Mountain had a population of 412 people and a land area of 1.63 square miles [4.2 km²]. This gives a population density of 252.9 people per square mile [97.7 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 South Mountain. You need to be careful when making such a comparison, the differences are likely to lead to a misleading 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, South Mountain had 163 Housing Units<3> and with its population of 384 people, this averages 2.36 people per Housing Unit.

The 2010 Census shows South Mountain had a land area of 1.61 square miles [4.2 km²]. This translates to 101.1 Housing Units per square mile [39.02 housing units/km²].

From the Census of 2000: South Mountain had 161 Housing Units, a population of 412 people and a land area of 1.63 square miles [4.2 km²]. This gives a density of 2.56 people per Housing Unit and 98.8 Housing Units per square mile [38.16 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 South Mountain and you need to be careful when comparing results between the censuses. More information about these differences can be found in the section called Census-to-Census Observations ... (see below).

Coryell County ...

The community of South Mountain is located in Coryell County.

The county had a population of 75,388 people at the 2010 Census. With it's population of 384 people, South Mountain represented 0.51% of the county's total.

In addition, where the town of South Mountain has a population density of 238.1 people per square mile [91.9 people/km²], Coryell County averages 71.7 people per square mile [27.67 people/km²].

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

Population Rings for South Mountain ...

To help identify the number of people who live in South Mountain and the surrounding area, we have drawn concentric rings centered on South Mountain. We counted the number of communities within each ring and summed their populations.<4>

  Radius   No of
  Since 2010    
5 mi   [8 km]212,687-21.37%
10 mi   [16 km]313,135-20.96%
15 mi   [24 km]519,099-14.44%
20 mi   [32 km]721,712-12.79%
25 mi   [40 km]12184,858+12.06%
30 mi   [48 km]23378,645+12.58%

Census-to-Census Observations ...

Introduction ...

When the Census Bureau takes a census count (or enumeration) for South Mountain, 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 South Mountain. 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.

Area ...

The sampling area (or polygon) given for the 2010 Census is 0.98% smaller than the 2000 Census.

The 2010 Census shows that the total area for South Mountain was 1.61 square miles [4.2 km²]. Of this total, only a minor amount of the area is covered by water.

The 2000 Census shows a total area of 1.63 square miles [4.2 km²]. Of this total, only a minor amount of the area is covered by water.

Location ...

While generally coinciding with the GPS location (latitude/longitude) of South Mountain, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for South Mountain.

For the 2010 Census, the location was given as:

Lat:   31.439827°   (or 31°26'23" N)             [Map]

Lon:   -97.679265°   (or -97°40'45" W)

For the 2000 Census, the location given was:

Lat:   31.435056°   (or 31°26'6" N)             [Map]

Lon:   -97.676587°   (or -97°40'35" W)

The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 1,928 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 (#2413308) to South Mountain. This identifier also marks a GSP point on the map, and that point lies within the boundaries of South Mountain. The GNIS point has been mapped to the latitude/longitude:

Lat:   31.439724°   (or 31°26'23" N)             [Map]

Lon:   -97.679164°   (or -97°40'44" W)

The GSP location given for the 2010 Census lies 48.96 feet to the northwest<6> of the point given by the GNIS for South Mountain. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for South Mountain.

Miscellaneous Information for South Mountain ...

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 Coryell County or the town of South Mountain:

The GNIS Codes ...

The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to South Mountain:

GNIS ID for South Mountain: 2413308

GNIS ID for Coryell County: 1383835

GNIS ID for Texas: 1779801

The FIPS Codes ...

An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):

State Code: 48 (Texas)

County Code: 099 (Coryell County)

Place Code: 69120 (South Mountain)

State & County Code: 48/099 (Texas / Coryell County)

State & Place Code: 48/69120 (Texas / South Mountain)

Misc. Census Codes ...

South Mountain is located in Census Region #3 (the South Region) and Division #7 (the West South-Central Division).

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

Other Roadside Stops ...

Search for a Texas Community

About Coryell County

About Texas

Off-the-Road Links ...

The official website of the U.S. Census Bureau

Unfortunately, we don't know of a website for South Mountain. If you can help, please contact us through our Feedback Page.

The official website for State of Texas:

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 2018.

- Return to Citation

<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.

- Return to Citation

<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).

- Return to Citation

<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.

- Return to Citation

<5>The calculated bearing (or angle) to the 2010 Census location is 25 degrees and a distance of 1,928 feet.

- Return to Citation

<6>The calculated bearing (or angle) to the GNIS point is 39 degrees and a distance of 48.96 feet.

- Return to Citation






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This page was last modified: 18 Nov 2019