Background: The idea that raising a child with disabilities has a negative impact on the parents' relationship is still widely accepted despite contradictory research findings. This article addresses the impact of raising a child with disabilities on family structure in the present Norwegian context. Method: Family demographics were collected at two stages during the childhood of children with physical, intellectual or multiple disabilities born 1993-1995 (1999, n = 603 and 2003, n = 489). These figures were compared with the corresponding data for all children (Statistics Norway, Children Statistics). Results: The family structures of children with disabilities were fairly similar to those of the typical family. Slightly fewer children with disabilities had siblings and a higher proportion of the parents of children with disabilities were married or cohabiting. The type or degree of impairment was not found to have any impact on family structure. Conclusions: The results suggest that family structure in families raising a child with a disability is similar to other families. Whether this should only be seen as positive is discussed, as is whether the disability may produce a stronger feeling of obligation to stay together.