Spencer demographics profile

Population density (sq mi)1,0225591
Median age40.938.037.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)65%60%55%
Families w/ Kids under 1845%44%43%
Speak English97%92%79%
Speak Spanish3%4%13%
Spencer, IA has a population of 11,172 and is the 3,620th largest city in the United States. The population density is 1,022 per sq mi which is 1771% higher than the Iowa average and 1028% higher than the national average. The median age in Spencer is 41 which is approximately 8% higher than the Iowa average of 38. In Spencer, 65% of the population over 15 years of age are married, 97% speak English and 3% speak Spanish. 70% of Spencer residents were born in Iowa, 28% were born out of state, 0% were born outside of the United States and 2% were foreign born.

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Did you know?

  • The population density in Spencer is 1771% higher than Iowa.
  • The median age in Spencer is 8% higher than Iowa.
  • In Spencer 95.03% of the population is White.
  • In Spencer 0.42% of the population is Black or African American.
  • In Spencer 0.00% of the population is Asian.

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Spencer population breakdown by race

Black or African American0.42%3.32%12.63%
American Indian0.04%0.32%0.82%
Native Hawaiian0.00%0.08%0.18%
Mixed race2.79%1.97%3.06%
Other race1.72%1.27%4.75%
In Spencer, 3.8% 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

Spencer age breakdown

Marital status

Age of children in married couples

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