Products, Services, and Data

Demographics: Current and Historical Population Estimates

COMPASS develops population estimates for city and county jurisdictions in Ada and Canyon Counties. COMPASS population estimates rely on household size and vacancy rate information from the U.S. Census and on residential building permit data collected annually from local governments. Additional building permit information is published in the Development Monitoring Report. More information on the methodology used to develop the population estimates can be found within the worksheet document below.

COMPASS estimates are based on building permit information through December 31, 2016. The 2017 estimates are for April 1, 2017. Due to the difference in time of estimates as well as the methodology used to prepare the estimates, discrepancies will occur between the COMPASS and Census estimates.

2010-2017 Population Estimates by City Limit Boundaries
(Updated 4/1/2017)

COMPASS develops population estimates for city and county jurisdictions in Ada and Canyon Counties. Since 1990, COMPASS has used a housing stock-based estimation model to update population estimates which assumes changes in the number of occupied housing units reflect changes in the population.

A comparison between COMPASS and Census population estimate methodologies and FAQs can be found here.