Census Data for Thebes

Population ...

The most recent Census Estimate<1> was for 2019 and it gave Thebes a population of 319 people.

The last Decennial Census<2> was in 2010, which gave Thebes a population of 436 people.

The village of Thebes is located in Alexander County. The 2010 Census gave Alexander County; a population of 8,238 people. This means that Thebes had 5.29% of the county's total population, making it Alexander's 3rd most populous community.

At the same time, Illinois had a population of 12,830,632 people.

Area ...

The 2010 Census shows that the sampling area for Thebes has a total area of 2.31 square miles [6 km²]. Of this total, 1.75 square miles [4.5 km²] is land, with the balance (24.56%) being water (0.57 square miles [1.5 km²]).

Alexander County has a land area of 235.5 square miles [610 km²]. At 1.75 square miles [4.5 km²], Thebes has 0.74% of the county's total land area.

• Continue Reading ...
  • When the Census Bureau conducts a census for a village like Thebes, 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 village.
  • Things like population, area and housing for Thebes reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Thebes 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:   37° 12' 42"   (or 37.21°)
  • Lon:   -89° 27' 12"   (or -89.45°)
  • 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, Thebes had 181 Housing Units<3> and with its population of 436 people, this averages 2.41 people per Housing Unit.

• Continue Reading ...
  • The 2010 Census shows Thebes had a land area of 1.75 square miles [4.5 km²]. This translates to 78.3 Housing Units per square mile [30.21 housing units/km²].
  • From the Census of 2000: Thebes had 213 Housing Units, a population of 478 people and a land area of 1.8 square miles [4.7 km²]. This gives a density of 2.24 people per Housing Unit and 92.1 Housing Units per square mile [35.56 housing units/km²].
  • Note: Repeating the caution above (under Population Density), be aware that when comparing Housing Units between the 2010 Census and the 2000 Census, there were changes in the sampling area for Thebes and you need to be careful when comparing values between the censuses. More information about the nature of these the changes can be found in the section called Census-to-Census Observations ... (see below).

Alexander County ...

The community of Thebes is located in Alexander County<4>.

The county had a population of 8,238 people at the 2010 Census. With it's population of 436 people, Thebes represented 5.29% of the county's total.

In addition, where the village of Thebes has a population density of 188.5 people per square mile [72.8 people/km²], Alexander County averages 34.98 people per square mile [13.51 people/km²].

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

Census-to-Census Observations ...

Introduction ...

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

• Continue Reading ...
  • For the 2010 Census, the location was given as:
  • Lat:   37.211668°   (or 37°12'42" N)
  • Lon:   -89.453487°   (or -89°27'12" W)
  • For the 2000 Census, the location given was:
  • Lat:   37.219177°   (or 37°13'9" N)
  • Lon:   -89.456915°   (or -89°27'24" W)
  • The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 2,912 feet to the south<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 (#2399967) to Thebes. This identifier also marks a GPS point on the map, and that point lies within the boundaries of Thebes. The GNIS point has been mapped to the latitude/longitude:
  • Lat:   37.214043°   (or 37°12'50" N)
  • Lon:   -89.454405°   (or -89°27'15" W)
  • The GPS location given for the 2010 Census lies 905 feet to the south<6> of the point given by the GNIS for Thebes. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Thebes.

Miscellaneous Information for Thebes ...

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 Alexander County or the village of Thebes:

• The GNIS Codes ...
  • The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Thebes:
  • GNIS ID for Thebes: 2399967
  • GNIS ID for Alexander County: 424203
  • GNIS ID for State of Illinois: 1779784

• The FIPS Codes ...
  • An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
  • State Code: 17 (Illinois)
  • County Code: 003 (Alexander County)
  • Place Code: 74873 (Thebes)
  • State & County Code: 17/003 (Illinois / Alexander County)
  • State & Place Code: 17/74873 (Illinois / Thebes)

• Misc. Census Codes ...
  • Thebes is located in Census Region #2 (the Midwest Region) and Division #3 (the East North-Central Division).

• The US Postal Service ZIP Code ...
  • While some people have used a ZIP code to identify a community, the purpose of the ZIP code was to make mail delivery more efficient by grouping addresses together. Although the ZIP Code doesn't specifically identify a village like Thebes, it does identify addresses that are in (or near) Thebes. It's important to remember that the boundaries of a ZIP Code can be changed, re-assigned or overlapped with other ZIP Codes.
  • The ZIP code for Thebes:62990<7>

• Census ZCTA Codes ...
  • The US Census Bureau created statistical entities that they call ZIP Code Tabulation Areas (ZCTAs) and these ZCTAs are frequently confused with the ZIP codes that come from the US Postal Service (USPS).
  • ZCTAs were first created for the 2000 Census and at that time, they were based upon the USPS ZIP codes. While largely covering the same areas, the boundaries of a ZCTA do not necessarily match the boundaries of a postal ZIP code with the same number. For example, while a postal ZIP code can cross a county or state line, a Census ZCTA can not. They should be treated as separate entities with no correlation between them.

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

Off-the-Road Links ...

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

The official website for State of Illinois: https://illinois.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)