North Carolina General Statutes Chapter 160A. Cities and Towns § 160A-58.63. Population and land estimates

(1) As to population, if the estimate is based on the number of dwelling units in the area multiplied by the average family size in such area, or in the township or townships of which such area is a part, as determined by the last preceding federal decennial census; or if it is based on a new enumeration carried out under reasonable rules and regulations by the annexing municipality; provided, that the court shall not accept such estimates if the petitioners demonstrate that such estimates are in error in the amount of ten percent (10%) or more.

(2) As to total area, if the estimate is based on an actual survey, or on county tax maps or records, or on aerial photographs, or on some other reasonably reliable map used for official purposes by a governmental agency, unless the petitioners on appeal demonstrate that such estimates are in error in the amount of five percent (5%) or more.

(3) As to degree of land subdivision, if the estimates are based on an actual survey, or on county tax maps or records, or on aerial photographs, or on some other reasonably reliable source, unless the petitioners on appeal show that such estimates are in error in the amount of five percent (5%) or more.