Dumanjug is bordered to the north by Barili, to the west is the Tañon Strait, to the east is Sibonga, and to the south is Ronda.

[citation needed] The bulk of the household population is concentrated in the coastal barangays located in the western part of the municipality.

The urban area comprising Poblacion, Sima, Ilaya, and Looc has the biggest slice of the population.

With the urban area fast becoming a commercial hub, Bitoon, Paculob, Cogon and Liong are foreseen as upcoming dormitory communities.

[citation needed] Dumanjuganons speak Cebuano, the official language spoken in Cebu.

The municipality has considerable quantities of high-grade dolomites and large phosphate reserves found in Kanghumaod, Balaygtiki, Bullogan, Kabalaasnan, Matalao and Kabatbatan.

Within the complex, various commercial establishments contribute greatly to the movement of goods and generation of revenues.

However, qualified voters in Mandaue are allowed to vote in elections for Cebu provincial officials by virtue of Republic Act No.