Community health worker (CHW) programmes have been implemented to enhance tuberculosis (TB) prevention and treatment in urban areas of Nigeria. A mixed-methods approach was employed, including surveys, focus group discussions, and routine health data collection from public clinics. Significant reductions in TB-related outcomes were observed with CHW interventions. For instance, there was an 18% reduction in mortality rates (95% CI: -20% to -16%). CHW programmes effectively contributed to lower TB prevalence and mortality among urban populations. Further expansion of CHW initiatives is recommended with ongoing monitoring and evaluation. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.