This paper proposes a two-group urban model with endogenous capital an
d knowledge accumulation in an isolated island economy. The model exam
ines the dynamic interdependence among knowledge utilization, creativi
ty, transportation conditions, savings behavior, location choice, and
residential pattern in a just two-group island economy. Although it is
constructed with some strict assumptions, the model is quite general
in the sense that the well-known models, such as the Solow-Swan model,
the Kaldor-Pasinetti two-group model, and the Alonso model, can be co
nsidered, from a structural point of view, as its special cases. The k
nowledge accumulation in our model is based upon Arrow's learning-by-d
oing model. It is proved that the system may have a unique or multiple
equilibria and each equilibrium may be stable or unstable, depending
upon knowledge utilization and creation characteristis of the two grou
ps. We also examine the impact of changes in the population and knowle
dge creation efficiency of two groups on long-run growth, wealth distr
ibution, and residential structure.