Jefferson demographics profile

Population density (sq mi)7055591
Median age48.238.037.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)68%60%55%
Families w/ Kids under 1834%44%43%
Speak English97%92%79%
Speak Spanish2%4%13%
Jefferson, IA has a population of 4,207 and is the 7,214th largest city in the United States. The population density is 705 per sq mi which is 1190% higher than the Iowa average and 678% higher than the national average. The median age in Jefferson is 48 which is approximately 27% higher than the Iowa average of 38. In Jefferson, 68% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 77% of Jefferson residents were born in Iowa, 21% were born out of state, 1% were born outside of the United States and 2% were foreign born.
For Sale
For Rent

Find real estate listings

Find rental listings

Did you know?

  • The population density in Jefferson is 1190% higher than Iowa.
  • The median age in Jefferson is 27% higher than Iowa.
  • In Jefferson 97.03% of the population is White.
  • In Jefferson 0.29% of the population is Black or African American.
  • In Jefferson 0.74% of the population is Asian.

Compare Jefferson, IA Demographics To Other Cities

Jefferson population breakdown by race

Black or African American0.29%3.32%12.63%
American Indian0.21%0.32%0.82%
Native Hawaiian0.12%0.08%0.18%
Mixed race1.62%1.97%3.06%
Other race0.00%1.27%4.75%
In Jefferson, 2.5% 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

Jefferson age breakdown

Marital status

Age of children in married couples

Source: The Jefferson, 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.