Idaho State Counties
Idaho: Population


  • Had a population of 1,654,930 in 2015.

  • Gained 87,348 residents between 2010 and 2015.
  • Grew by 5.6 percent between 2010 and 2015, compared to an increase of 4.1 percent in the U.S. as a whole.   

  • Gained 941,915 residents since 1970.
  • Had a 2010-2015 rate of population change that ranked 10th – from highest to lowest – out of the 50 states reporting data.

To get the most out of this indicator . . .


Ask questions:


·         Is the local population growing or declining?

·         How quickly is it changing?

·         Is it changing steadily over time, or have there been periods of rapid change alternating with periods of little change?


Look at other indicators:


·         “Population: Migration and natural change” - Which component of population change is having the greatest impact on population change?

·         “Population: Race” and/or “Population: Hispanic origin” - Are specific groups growing or declining faster than others?

·         “Employment: Number of jobs” – How does population growth compare to job growth?

·         “County types: County policy type codes” – Is your county classified as a “population loss” county?


Dig deeper:


·         Look at the county rankings for your state and/or view maps to see how your county compares to others.

·         Take a Big Picture view of your county.

·         If you have specific questions, send us an e-mail.

Note: 2014 estimates were revised per the Census Bureau's updates when the 2015 data were released.

Source: 1970 & 1980: U.S. Bureau of the Census, County Population Census Counts, (;
2001-2009, 2011-2015: U.S. Bureau of the Census, Population Estimates Program, (;
1990, 2000, 2010: U.S. Bureau of the Census, American Factfinder, (; DATE LAST UPDATED: April 21, 2016.

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