Area Sampling was applied in this study. It is an alternative to census sampling, Based on the criterion of systematic sampling, an area sampling framework was designed. Using a self-developed program, coordinate points were calculated within one area sample. The participants came from the coordinate points. Data were collected by face-to-face interviews. Age and gender of the participants were analyzed to verify the representativeness of sampling results. The results showed that area sampling is an alternative method to census sampling.