This study examines methane emissions from natural gas residential customer meters within the state of California (CA). Natural gas, which is comprised of mostly methane, leaks from various components of a residential meter set assembly (MSA). The objective of the project was to evaluate and measure fugitive methane emissions from residential MSAs across the state. The project determined the proportion of MSAs with leaks and identified the leaking component. The project also investigated differences in the frequency and size of leaks on MSAs between coastal and non-coastal regions. This project is expected to provide additional information to improve the accuracy of the reporting of total emissions for natural gas local distribution companies.