Local Government Code of 1991
Section 461. Requisites for Creation.
(a) A province may be created if it has an average annual income, as certified by the Department of Finance, of not less than Twenty million pesos (P20,000,000.00) based on 1991 constant prices and either of the following requisites:
(i) a contiguous territory of at least two thousand (2,000) square kilometers, as certified by the Lands Management Bureau; or
(ii) a population of not less than two hundred fifty thousand (250,000) inhabitants as certified by the National Statistics Office:
Provided, That, the creation thereof shall not reduce the land area, population, and income of the original unit or units at the time of said creation to less than the minimum requirements prescribed herein.
(b) The territory need not be contiguous if it comprise two (2) or more islands or is separated by a chartered city or cities which do not contribute to the income of the province.
(c) The average annual income shall include the income accruing to the general fund, exclusive of special funds, trust funds, transfers and non-recurring income.