Population
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This comparison uses the latest available atlas values for each country; reporting years can differ by metric.
Population
Surface area
Nominal GDP
Proportional bars and relative differences make the headline numbers easier to read.
Chad’s population is about 86.2× that of Sao Tome and Principe, a difference of 20,063,587.
Chad’s surface area is about 1,338× that of Sao Tome and Principe, a difference of 1,283,040 km².
Sao Tome and Principe’s population density is about 15.5× that of Chad, a difference of 230 /km².
Chad’s nominal GDP is about 23.7× that of Sao Tome and Principe, a difference of $18.70 billion.
Sao Tome and Principe’s GDP per capita is 263% higher than that of Chad, a difference of $2,529.
Values use the latest available observations in WorldSumma. Economic reporting years are shown when available and can differ by country.
N'Djamena
Sao Tome
20,299,123
235,536
1,284,000 km²
960 km²
15.8 /km²
245 /km²
$19.52 billion · 2024
$822.2 million · 2024
$962 · 2024
$3,491 · 2024
Africa
Africa
Middle Africa
Middle Africa
Central African CFA franc · XAF · FCFA
Dobra · STN · Db
Chadian
Sao Tomean
+235
+239
.td
.st
TD / TCD
ST / STP
Africa/Ndjamena
Africa/Sao_Tome
Tchad
São Tomé e Príncipe
| Measure | Chad | Sao Tome and Principe |
|---|---|---|
| Capital | N'Djamena | Sao Tome |
| Population | 20,299,123 | 235,536 |
| Surface area | 1,284,000 km² | 960 km² |
| Population density | 15.8 /km² | 245 /km² |
| Nominal GDP | $19.52 billion · 2024 | $822.2 million · 2024 |
| GDP per capita | $962 · 2024 | $3,491 · 2024 |
| Region | Africa | Africa |
| Subregion | Middle Africa | Middle Africa |
| Currency | Central African CFA franc · XAF · FCFA | Dobra · STN · Db |
| Nationality | Chadian | Sao Tomean |
| Phone code | +235 | +239 |
| Internet domain | .td | .st |
| ISO codes | TD / TCD | ST / STP |
| Time zone | Africa/Ndjamena | Africa/Sao_Tome |
| Native name | Tchad | São Tomé e Príncipe |
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Nestled in the heart of Africa, Chad is a land of stark contrasts and hidden wonders, where sweeping deserts meet verdant savannas and vibrant traditions echo across its bustling markets.
Full Chad profile →São Tomé and Príncipe, a Portuguese-speaking island nation in the Gulf of Guinea, off the western equatorial coast of Central Africa, comprises two main islands, São Tomé and Príncipe, and several smaller islets. It is Africa's second-smallest country.
Full Sao Tome and Principe profile →The capital of Chad is N'Djamena.
Chad has a recorded population of approximately 20,299,123 people.
Chad covers an area of about 1,284,000 km².
Chad has a population density of roughly 15.8 /km² (people per square kilometre).
Chad has a gross domestic product (GDP) of approximately $19.52 billion as of 2024.
Chad has a GDP per capita of approximately $962.
Chad uses the Central African CFA franc (XAF), with the symbol FCFA.
Chad is located in Middle Africa, Africa.
The native name of Chad is Tchad.
People from Chad are referred to as Chadian.
The international dialing code for Chad is +235.
The country code top-level domain (ccTLD) for Chad is .td.
Chad uses the Africa/Ndjamena time zone.
Nestled in the heart of Africa, Chad is a land of stark contrasts and hidden wonders, where sweeping deserts meet verdant savannas and vibrant traditions echo across its bustling markets.
The capital of Sao Tome and Principe is Sao Tome.
Sao Tome and Principe has a recorded population of approximately 235,536 people.
Sao Tome and Principe covers an area of about 960 km².
Sao Tome and Principe has a population density of roughly 245 /km² (people per square kilometre).
Sao Tome and Principe has a gross domestic product (GDP) of approximately $822.2 million as of 2024.
Sao Tome and Principe has a GDP per capita of approximately $3,491.
Sao Tome and Principe uses the Dobra (STN), with the symbol Db.
Sao Tome and Principe is located in Middle Africa, Africa.
The native name of Sao Tome and Principe is São Tomé e Príncipe.
People from Sao Tome and Principe are referred to as Sao Tomean.
The international dialing code for Sao Tome and Principe is +239.
The country code top-level domain (ccTLD) for Sao Tome and Principe is .st.
Sao Tome and Principe uses the Africa/Sao_Tome time zone.
São Tomé and Príncipe, a Portuguese-speaking island nation in the Gulf of Guinea, off the western equatorial coast of Central Africa, comprises two main islands, São Tomé and Príncipe, and several smaller islets. It is Africa's second-smallest country.