In order for public transport to be a part of the solution to the environmental problems caused by traffic there need to be a clear understanding of how, and to what extent, different factors affect demand. Much effort has gone into research in this area but there still seem to be some confusion regarding some key relationships, one of them being the effect of income on public transport demand. The purpose of this article is therefore to provide empirical estimates of how different factors, including price, income and car ownership, affect the demand for local public transport. Income affects public transport demand directly, and trough its effect on car ownership, these effects works in opposite direction. Combining these it is found that total income effect is close to zero.