Aggregated data on regions within countries have been used to analyze the effect of religion and religiosity on aggregate support for redistribution. The data are from the International Social Survey Programme and a panel data set was constructed at the level of regions that were observed several times over the period 1985–2010. Empirical analyses show that a higher share of Catholics within a region has a positive effect on aggregate support for redistribution; a higher share of Protestants has a negative effect; religiosity (measured by church attendance) has no effect; and the effect of a religious denomination is non-linear and depends on whether or not it has a weak or a strong presence in a region. It was also found that Scandinavia is unusual in combining a high share of Protestants with high aggregate support for redistribution.