2 main contraceptive use data sources for Indonesia are those from the National Family Planning Coordinating Board (NFPCB) and those from different periodically-conducted population surveys. The former calculates pill use per year by cycles distributed divided by 13, IUDs by changing continuation rates times insertions, condoms according to an estimate of 6 required per month to assure 1 month's protection, injections assuming 3 month's protection, and sterilization assuming 7 years. Survey data were derived from the 1973 Fertility Mortality Survey (FMS), the 1976 Intercensal Population Survey (SUPAS), the 1976 Java-Bali Fertility Survey (IFS), the 1979 National Socioeconomic Survey (SUSENAS), a 5% sample of the 1980 Population Census, the East Java Population Survey (EJPS) and the 1982 Indonesian Contraceptive Prevalence Survey (ICPS). Approaches varied for each survey as to single or multiple questions and their order. Surveys reported more use than did the survey statistics, but evidence suggests program continuation rates were probably overestimated outside central Java. The IFS and FMS data may have been underreported because of allowing proxy respondents to answer for women. The accuracy of service statistics may have been affected by adjusting data for late submission of clinic statistics. Some data on women using multiple methods (e.g. pill and IUD) simultaneously places either service instruction or census statistics under suspicion. For Jakarta program statistics are markedly lower than census statistics, suggeting a strong role of private sector distribution there. Tables and graphs show contraceptive users by program method (number and %) 1971-85, % of users by program method and of married women 15-44 using contraceptives 1971-85; % distribution for the same; comparison of survey and NFPCB data of female users 15-44, 1973-80, and the same for Jakarta and East Java, 1980-82.