According to the "Register of Households in Taiwanese Tribal Settlements" drawn up by the Dutch East India Company, in 1655 there were some 15,000 Siraya, accounting for a full one-third of the total Pingpu population.
根據荷屬東印度公司所做的《台灣番社戶口表》，截至一六五五年，西拉雅族共有近一萬五千人，足足佔平埔總人數的三分之一強。