New York Civil Practice Law & Rules Section 4530 - Certificate of population.

  4530.  Certificate  of  population.  (a)  Prima facie evidence.   A
  certificate of the officer in charge of the census of the United States,
  attested by the United States secretary of commerce, giving  the  result
  of  the  census is, except as hereinafter provided, prima facie evidence
  of such result.
(b) Conclusive evidence. Where  the  population  of  the  state  or  a
  subdivision,  or  a portion of a subdivision of the state is required to
  be determined according to the federal or state  census  or  enumeration
  last preceding a particular time, a certificate of the officer in charge
  of  the  census  of  the  United  States,  attested by the United States
  secretary of commerce, as to such population as shown  by  such  federal
  census, or a certificate of the secretary of state as to such population
  as  shown  by  such  state  enumeration,  is conclusive evidence of such
  population.

Last modified: February 3, 2019