Objective. The purpose of this study is to determine which factors affect f
amily income inequality in metropolitan counties in the United States. Unli
ke most previous studies, this study considers the possibility that state-l
evel cultural characteristics may affect county-level income inequality. Me
thods. Using data from the 1990 Census of the Population in an OLS regressi
on model, county-level income inequality is regressed on an a variety of de
mographic, economic, and geographic characteristics of the county. Special
attention is paid to the effect of state-level cultural characteristics and
employment growth. Results. This paper finds that counties in states with
relatively liberal public policies have less income inequality than countie
s in states with relatively conservative public policies. However, only wea
k evidence is found to indicate that employment growth reduces income inequ
ality. Conclusions. A surprising finding is the weak effect of employment g
rowth. Since policymakers often view policies that induce employment growth
as a method of reducing income inequality, this study suggests that such p
olicies may not reduce inequality.