The name was derived from a famous circular Roman pool which had the effect of reflecting the sun, hence the name Heliopolis meaning in the Greek language "City of the Sun".

The highest point in the vicinity is 426 meters above sea level, 1.9 km northeast of the Héliopolis.

Around Héliopolis it is quite densely populated, with 129 inhabitants per square kilometers.

[2] Nearest society Guelma, 4.8 km south of Héliopolis.

The warmest month is July when the average temperature is 32 °C and the coldest is January, with 8 °C.