Waterloo demographics profile

Population density (sq mi)1,1135591
Median age36.538.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)52%60%55%
Families w/ Kids under 1844%44%43%
Speak English89%92%79%
Speak Spanish5%4%13%
Waterloo, IA has a population of 68,357 and is the 537th largest city in the United States. The population density is 1,113 per sq mi which is 1938% higher than the Iowa average and 1129% higher than the national average. The median age in Waterloo is 37 which is approximately 4% lower than the Iowa average of 38. In Waterloo, 52% of the population over 15 years of age are married, 89% speak English and 5% speak Spanish. 74% of Waterloo residents were born in Iowa, 18% were born out of state, 1% were born outside of the United States and 7% were foreign born.
For Sale
For Rent

Find real estate listings

Find rental listings

Did you know?

  • The population density in Waterloo is 1938% higher than Iowa.
  • The median age in Waterloo is 4% lower than Iowa.
  • In Waterloo 76.22% of the population is White.
  • In Waterloo 15.72% of the population is Black or African American.
  • In Waterloo 1.97% of the population is Asian.

Compare Waterloo, IA Demographics To Other Cities

Waterloo population breakdown by race

Black or African American15.72%3.32%12.63%
American Indian0.39%0.32%0.82%
Native Hawaiian0.37%0.08%0.18%
Mixed race2.88%1.97%3.06%
Other race2.44%1.27%4.75%
In Waterloo, 6.2% 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

Waterloo age breakdown

Marital status

Age of children in married couples

Source: The Waterloo, IA demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
Are you looking to buy or sell?
What style of home are you
What is your
When are you looking to
ASAP1-3 mos.3-6 mos.6-9 mos.1 yr+
Connect with top real estate agents
By submitting this form, you consent to receive text messages, emails, and/or calls (may be recorded; and may be direct, autodialed or use pre-recorded/artificial voices even if on the Do Not Call list) from AreaVibes or our partner real estate professionals and their network of service providers, about your inquiry or the home purchase/rental process. Messaging and/or data rates may apply. Consent is not a requirement or condition to receive real estate services. You hereby further confirm that checking this box creates an electronic signature with the same effect as a handwritten signature.