Overijse is a 
municipality located in the 
Belgian province of 
Flemish Brabant. The municipality only comprises the town of Overijse proper. On January 1st, 2000 Overijse had a total population of 23,738 (11,573 males and 12,165 females). The total area is 45.21 
km² which gives a 
population density of 525.06 inhabitants per km².
 
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