Rochester demographics profile

StatisticRochesterIllinoisNational
Population3,68712,851,684318,558,162
Population density (sq mi)1,51622291
Median age40.037.437.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)61%55%55%
Families w/ Kids under 1854%44%43%
Speak English99%77%79%
Speak Spanish1%13%13%
Rochester, IL has a population of 3,687 and is the 7,807th largest city in the United States. The population density is 1,516 per sq mi which is 582% higher than the Illinois average and 1573% higher than the national average. The median age in Rochester is 40 which is approximately 7% higher than the Illinois average of 37. In Rochester, 61% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 75% of Rochester residents were born in Illinois, 24% were born out of state, 1% were born outside of the United States and 1% were foreign born.
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Did you know?

  • The population density in Rochester is 582% higher than Illinois.
  • The median age in Rochester is 7% higher than Illinois.
  • In Rochester 97.18% of the population is White.
  • In Rochester 2.39% of the population is Black or African American.
  • In Rochester 0.00% of the population is Asian.

Compare Rochester, IL Demographics To Other Cities

Rochester population breakdown by race

RaceRochesterIllinoisNational
White97.18%72.14%73.35%
Black or African American2.39%14.30%12.63%
Asian0.00%5.10%5.22%
American Indian0.00%0.23%0.82%
Native Hawaiian0.00%0.03%0.18%
Mixed race0.43%2.34%3.06%
Other race0.00%5.86%4.75%
In Rochester, 0.6% 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

Rochester age breakdown

Marital status

Age of children in married couples

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