Vaccine-preventable diseases (VPDs) are a major cause of child mortality in developing countries, accounting for above 1 million deaths per annum (Butt, Mohammed, Butt, Butt, & Xiang, 2020). Therefore, proper vaccination against six VPDs (tuberculosis, measles, diphtheria, pertussis, tetanus and polio) is among the important development indicators and may play a vital role in reducing the global childhood morbidity and mortality (Legesse & Dechasa, 2015). Though, Expanded Program on Immunization (EPI), a global program launched by World Health Organization (WHO) in 1974, has made significant contribution in reducing child illness and deaths from VPDs (Butt et al., 2020), about 21.8 million children, globally, are not being reached to the routine vaccination services (Restrepo-Méndez et al., 2016).A study investigated inequalities in vaccination coverage across and within 86 low-and middle-income countries (LIMCs) and concluded that most of these countries, including Pakistan, are affected by these disparities (Restrepo-Méndez et al., 2016).In literature, wealth-related inequality has been measured in few