Firth demographics profile

Population density (sq mi)7621991
Median age37.035.737.7
Male/Female ratio1.1:11.0:11.0:1
Married (15yrs & older)75%60%55%
Families w/ Kids under 1848%45%43%
Speak English85%89%79%
Speak Spanish15%8%13%
Firth, ID has a population of 437 and is the 20,382nd largest city in the United States. The population density is 762 per sq mi which is 3896% higher than the Idaho average and 742% higher than the national average. The median age in Firth is 37 which is approximately 4% higher than the Idaho average of 36. In Firth, 75% of the population over 15 years of age are married, 85% speak English and 15% speak Spanish. 68% of Firth residents were born in Idaho, 24% were born out of state, 3% were born outside of the United States and 4% were foreign born.

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Did you know?

  • The population density in Firth is 3896% higher than Idaho.
  • The median age in Firth is 4% higher than Idaho.
  • In Firth 85.35% of the population is White.
  • In Firth 0.00% of the population is Black or African American.
  • In Firth 0.00% of the population is Asian.

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Firth population breakdown by race

Black or African American0.00%0.64%12.63%
American Indian1.60%1.31%0.82%
Native Hawaiian0.00%0.12%0.18%
Mixed race0.92%2.57%3.06%
Other race12.13%2.74%4.75%
In Firth, 15.1% 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.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Firth age breakdown

Marital status

Age of children in married couples

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