Say San Isidro et kumadua ya klase ya baley ed luyag na Nueva Ecija, Filipinas. Unong ed 1 Mayo 2020 census, say populasyon to et 54,372 totoo tan 12,828 abong. Walay kabaleg tan sukat to ya 56.49 sq. km. Say zip code to et 3106.
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Census of Population (2015). "Region III (Central Luzon)". Total Population by Province, City, Municipality and Barangay. PSA. Retrieved 29 June 2016.
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Census of Population and Housing (2010). "Region III (Central Luzon)". Total Population by Province, City, Municipality and Barangay. NSO. Retrieved 29 June 2016.