Diabetes prevalence is increasing in urban Nigeria, requiring effective community-based interventions to manage HbA1c levels. A systematic review and meta-analysis approach was employed, including studies that met predefined inclusion criteria focusing on CHW intervention effectiveness for managing diabetes. Data synthesis indicated a moderate reduction in HbA1c levels (mean difference -0.6%, $p<0.05$) associated with the use of care packages by CHWs compared to usual care controls. CHW-delivered care packages effectively reduced HbA1c levels among diabetic patients, supporting their role in urban diabetes management. Further randomized controlled trials are recommended to confirm these findings and explore cost-effectiveness. Diabetes, Community Health Workers, Care Packages, HbA1c Reduction