Population density (sq mi)1,8792291
Median age40.135.737.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)57%60%55%
Families w/ Kids under 1839%45%43%
Speak English97%89%79%
Speak Spanish1%8%13%

Key findings

  • The population density in Lewiston is 8443% higher than Idaho
  • The median age in Lewiston is 12% higher than Idaho
  • In Lewiston 94.42% of the population is White
  • In Lewiston 0.33% of the population is Black
  • In Lewiston 0.93% of the population is Asian

Compare Lewiston, ID Demographics


      Lewiston population breakdown by race

      American Indian1.64%1.31%0.82%
      Native Hawaiian0.06%0.12%0.18%
      Mixed race2.42%2.57%3.06%
      Other race0.21%2.74%4.75%
      In Lewiston, 3.3% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      Lewiston age breakdown

      Marital status

      Age of children in married couples

      Source: The Lewiston, ID demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).