(a) Annually estimate the population as of July 1 of each city and county within the state and no later than December 15 of each year prepare a certificate of population showing the university’s estimate of the population of each city and county within the state as of July 1. The university’s estimate may be based upon statistical or other pertinent data or upon an actual count. The certificate shall also indicate the results of any enumeration of cities or annexed areas made after July 1.

(b) Annually estimate the number of persons between the ages of 4 and 20 who resided in each county as of October 25. The university shall certify such estimate to the Superintendent of Public Instruction and to the executive officer of the administrative office of each county, as defined in ORS 328.001, by January 1 of each year.

(c) Upon an official request from a city, county, political subdivision, public corporation or state agency, cause to be conducted at the expense of the requesting party an actual count of the population of the area specified in the request and prepare a certificate of population based upon such count.

(d) Upon the incorporation of a city, cause to be conducted at the expense of the city an actual count of the population of the city. The university shall prepare a certificate of population based upon such count. If the election of officers of the newly incorporated city is held 40 days or more before the end of the calendar quarter, the certificate shall be prepared before the end of the calendar quarter. If the election is held less than 40 days before the end of the calendar quarter, the certificate shall be prepared before the end of the calendar quarter next following the election.

(2) All certificates prepared under this section shall be filed with the Portland State University Population Research Center. [Formerly 221.850; 1963 c.312 §1; 1971 c.294 §11; 1993 c.98 §12; 2003 c.14 §89; 2007 c.71 §62; 2013 c.768 §106b]