A clinical assessment of the carotid sheath and its vessels is relevant towards correcting associated defects. The current study was done to examine the morphometry of the carotid bifurcation (CB) branches, and the branches of the outer carotid artery (ECA) in a Nigerian cadaver population. Twenty-six (26) hemi-necks were obtained and later dissected to expose the carotid arterial networkand 26 ECAs (13 right and 13 left) were studied. The following measurements were taken; inner diameters of the common carotid artery (CCA) at 10 mm below the bifurcation, internal (ICA) and external carotid (ECA) arteries at origin. Also, distances of branches as they emanate from the bifurcation such as superior thyroid (STA), ascending pharyngeal (APA), lingual (LA), facial (FA) and occipital (OA) arteries. These measurements were obtained with the aid of a digital vernier caliper. The data obtained was analyzed using the Statistical Package for Social Sciences (SPSS) version 23.0. The inner diameter of the CCA at 10mm below the CB was 7.16±1.33mm on the right side and 6.27±0.32mm on the left. The inner diameter of the ICA t origin was 6.21±1.04mm and 5.63±0.41mm in lateralization and that of the ECA at origin was 5.83±1.75mm and 5.46±0.33mm, respectively. The right average lengths of STA, APA, LA, FA and OA from CB were 5.06±1.33mm and 4.82±0.69mm, 7.71±3.64mm, 7.23±2.05mm, and 13.49±1.35mm, respectively while the left mean distances of STA, APA, LA, FA and OA from CB were 13.79±1.38mm, 18.46±4.93mm, 18.76±2.14mm, 18.75±5.22mm, and 17.68±1.72mm, respectively. There was no significant difference between arterial measurements at both sides. Conclusively, current study values will serve as clinical references towards ensuring that head and neck surgeries are properly done in a Nigerian population.