Custodial parents face many financial challenges. This recent US Census report (2013) provides a description of custodial parents and their financial status. This figure shows the poverty status of parents. You can see the impact of the recent recession of the poverty of these parents especially the custodial fathers.
These data show that a couple’s likelihood of divorce goes up when they live in communities with a high-rate of unemployment, median family income is low, and families live in poverty or receive welfare benefits.
From: Bramlett, M. D. & Mosher W. D. (2002) Cohabitation, Marriage, Divorce, and Remarriage in the United States. National Center for Health Statistics. Vital Health Stat 23(22).