This paper identifies the key organizational and environmental charact
eristics that affect the performance of community mental health center
s (CMHCs). Performance is conceptualized on both effectiveness and eff
iciency dimensions. Community length of stay of clients was used as an
effectiveness measure, and utilization of mandated CMHC services as a
n efficiency measure for the study of 40 community mental health care
organizations. Results for community length of stay indicate that clie
nt age, median income of the community, rural location, management typ
e and board composition all affect both community length of stay and u
tilization of day support services and residential services. Furthermo
re, the relationship between utilization and community length of stay
is identified.