This study assessed awareness levels about immunization programs among low socioeconomic families in rural West Bengal. A survey was conducted covering 590 children aged 1-5 years. The results showed that mothers had higher awareness than other family members. Factors like education level, caste, occupation, family size and distance from health centers influenced immunization rates. Full immunization was higher for males (56%) compared to females (23%). Children supported by integrated child development services had significantly higher full immunization (75%) than non-supported children (30%). The study concluded immunization awareness among rural families needs to be improved, especially for females and disadvantaged groups.