The response of ‘Hamlin’ sweet orange on ‘Rangpur Lime’ and planted at four different spacing was evaluated in an experiment set up in December, 1986, in Cordeirópolis, State of São Paulo, Brazil. The four spacing tested were: 6 x 1 m (1,666 trees/ha), 6 x 2 m (833 trees/ha), 6 x 3 m (555 trees/ha) and 6 x 4 m (416 trees/ha). The experiment was carried out without irrigation, using a randomized complete block design with three plants per plot, and four replications. Fruit production was evaluated from 1989 to 2000, fruit quality was recorded from 1996 to 1998, and plant vigor was evaluated only in 1999. Total fruit production per hectare was always larger when the smaller spacing was used, while the quality of the fruit was not affected by the different densities. After 13 years, plants arranged in lower densities showed more vegetative development than those arranged in higher densities. At that age, regardless of plant density, difficulty to carry out regular cultural practices was observed suggesting the need of pruning trees in order to aid orchard management.