Recycling behavior has been a kind of frequently studied environmental behavior. This study used meta-analysis to summarize past findings concerning the effect of demographic variables on recycling behavior or intention to recycle. These findings were based on studies done in Taiwan in the last decade, with the general public and college students as samples. The mean effect sized (r) of the reviewed studies, weighted by their sample sizes, are: gender .08 (p<.001), age .11 (p<.001), and education -0.02 (p>.05). All these studies revealed that women were a little more likely to recycle. However, most studies also found that people who were 41 to 50 years old recycle more or were more intended to do so. As for education, both peoples of high and low educational levels recycled more (or were more intended to recycle) than those of middle educational level. This might explain why there was no overall linear effect of education. Two studies found that people who served in agricultural, fishery, military, public, or educational sectors were more likely (or more willing) to recycle. These summaries regarding the age and education effects were far from conclusive, give that the number of studies available for the meta-analysis of these effect was quite small.