This study aims to examine the effect of demography such as gender, education level and income level; financial knowledge and financial attitude toward family financial behavior in Bantarkawung district. Samples taken by Simple Random Sampling technique obtained 100 respondents. The type of this research is quantitative research and analytical methods used were descriptive statistical analysis, instrumental test, multiple linear regression test, classical assumption test, and model feasibility test. The results of this study by simultaneously shown that demographics such as gender, education level and income level; financial knowledge and financial attitude influenced the family financial behavior. While the partial test (t test) shown that gender demography has a significantly negative effect toward family financial behavior, education level demography has insignificantly negative affect toward family financial behavior, income level demography has a significantly negative effect toward family financial behavior, then both financial knowledge and financial attitudes have significantly positive effect toward family financial behavior.