Factors that describe the disability status of the stroke patient on discharge are important when starting a rehabilitation program, both from a psychosocial and a financial point of view. The objective of this study was to assess how comorbidity and serum albumin levels relate to rehabilitation outcome in geriatric stroke patients. Another aim was to assess whether stroke etiology (ischemic or hemorrhagic) influences these links. Medical records of 80 patients (68 ischemic and 12 hemorrhagic strokes) older than 65 years, who had suffered their first stroke, were investigated. Functional performance levels at admission and discharge were evaluated using the Functional Independence Measure (FIM). Length of stay in hospital was recorded. Serum albumin levels and comorbidity scores on admission were noted. Correlations between these variables and differences between the groups categorized according to stroke etiology were analyzed. In the group of geriatric stroke patients as a whole, serum albumin level was correlated with FIM score at admission and discharge. Comorbidity score was negatively correlated with length of stay. In the ischemic stroke subgroup, serum albumin level was positively correlated with length of stay and with functional gain, and comorbidity score was negatively correlated with functional gain. Analysis of the data for the hemorrhagic stroke subgroup revealed none of these correlations. It was concluded that serum albumin level and comorbidity are useful indices in geriatric ischemic stroke patients for predicting functional outcome and time spent in rehabilitation.