Rochester, Illinois Population 2022

3,897
map placeholder

Rochester is a city located in Sangamon County Illinois. Rochester has a 2020 population of 3,897. Rochester is currently growing at a rate of 0.44% annually and its population has increased by 0.88% since the most recent census, which recorded a population of 3,863 in 2010.

The average household income in Rochester is $117,886 with a poverty rate of 1.47%. The median rental costs in recent years comes to $1,022 per month, and the median house value is $206,300. The median age in Rochester is 38.3 years, 37.6 years for males, and 38.9 years for females.

Rochester Demographics

According to the most recent ACS, the racial composition of Rochesterwas:

  • White: 92.59%
  • Black or African American: 2.59%
  • Asian: 2.12%
  • Two or more races: 1.14%
  • Other race: 0.79%
  • Native Hawaiian or Pacific Islander: 0.77%
  • Native American: 0.00%
The current population of Rochester, Illinois is 3,897 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 3,863.

Rochester, Illinois Population 2022

Population by Race

Race Population Percentage
White3,49892.59%
Black or African American982.59%
Asian802.12%
Native Hawaiian and Other Pacific Islander290.77%
Some Other Race300.79%
Two or More Races431.14%
Loading...

Rochester Population by Race

Rochester Population Pyramid 2022

Loading...

Rochester Median Age

41


Total

36.8


Male

44.5


Female

Rochester Adults

There are 2,702 adults, (840 of whom are seniors) in Rochester.

Rochester Age Dependency

Age Dependency Ratio

45.1

Old Age Dependency Ratio

57.8

Child Dependency Ratio

Rochester Sex Ratio

Female

2,037

53.92%

Male

1,741

46.08%

Rochester Population by Age

Rochester Renter vs Owner Occupied by Household Type

map placeholder

Rochester Household Types

Type Owner Renter
Male100%0%
Married96.6%3.4%
All91.9%8.1%
Non Family86.2%13.8%
Female79.8%20.2%

91.9%

Rate of Home Ownership

Rochester Households and Families

Type Count Average Size Owned
All1,4142.6791.9
Married8353.0196.6
Male403.45100
Female1983.4779.8
Non Family3411.386.2

3.03

Average Family Size

2.67

Average Household Size

Loading...

Rochester Households by Type

Loading...
Education Attained Count Percentage
Less Than 9th Grade150.60%
9th to 12th Grade401.59%
High School Graduate59623.67%
Some College31312.43%
Associates Degree2038.06%
Bachelors Degree80531.97%
Graduate Degree54621.68%
Loading...

Rochester Educational Attainment by Sex (over 25)

Rochester Educational Attainment by Race

Loading...
Race Total High School Bachelors
Asian747474
Islander292929
White2,3182,2631,234
Hispanic282814
Black6767
Other Race1414
2+ Races22

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 100.00%.

Rochester Educational Attainment by Race

Loading...
Name Average Male Female
Overall$53,705$59,643$50,296
Less Than 9th Grade$$$
High School Graduate$31,920$36,667$24,531
Some College$32,500$50,536$31,306
Bachelors Degree$70,833$78,452$66,167
Graduate Degree$68,456$92,083$52,434

$53,705

Average Earnings

$59,643

Average Male

$50,296

Average Female

Rochester Earnings by Educational Attainment

Rochester Language by Age

Loading...

Rochester Language

98.35% of Rochester residents speak only English, while 1.65% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.15% of the population.

Rochester Language

Rochester Poverty by Race

Loading...

1.47%

Overall Poverty Rate

1.85%

Male Poverty Rate

1.14%

Female Poverty Rate

Poverty in Rochester

The race most likely to be in poverty in Rochester is White, with 1.61% below the poverty level.

The race least likely to be in poverty in Rochester is Other, with NaN% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.00%. Among those working part-time, it was 4.55%, and for those that did not work, the poverty rate was 2.63%.

Rochester Poverty

Loading...
Name Poverty
Less Than 9th Grade14.55%
High School2.52%
Some College0.00%
Bachelors or Greater1.92%

Rochester Poverty Rate by Education

Loading...
Rate Poverty
Male Employed0.00%
Male Unemployed14.81%
Female Employed1.89%
Female Unemployed0.00%

Rochester Poverty Rate by Employment Status and Sex

Rochester Income by Household Type

Loading...
Name Median Mean
Households$95,463$108,868
Families$99,931$114,477
Married Families$104,427-
Non Families$48,466$59,369
Loading...

Income by Household Type

Rochester Marital Status

map placeholder

Marriage Rates

56.8%

Overall Marriage Rate

64.8%

Male Marriage Rate

50.5%

Female Marriage Rate

Rochester Married by Age and Sex

Loading...

Rochester Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is Over 65.

Rochester Marital Status by Race

map placeholder

Rochester Marital Status

Loading...

249

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War49
First Gulf War23
Vietnam153
Korea
World War II6

Rochester Veterans by War

Loading...
Age Group Veterans
18 to 3425
35 to 5439
55 to 648
65 to 74153
75+24

Rochester Veterans by Age

Loading...

Rochester Veterans by Race

Rochester Veterans by Education

Loading...

0.00%

Veteran Poverty Rate

20.08%

Veteran Disability Rate

Rochester Veterans by Education

Loading...

53.1%

Labor Force Participation

51.2%

Employment Rate

3.6%

Unemployment Rate

Rochester Employment by Age

Loading...

Rochester Employment by Race

Loading...

Rochester Employment by Education

Origin of Non-Citizens

Loading...

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Loading...

82.21%

Born in Rochester

99.47%

Native Born

0.53%

Foreign Born

0.37%

Non Citizen

0.16%

Naturalized

Place of Birth

99.47% of Rochester residents were born in the United States, with 82.21% having been born in Illinois. 0.37% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Rochester Place of Birth

Note: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
19902,6760.00%
20002,8932170.78%
20103,6897962.46%
20113,706170.46%
20123,723170.46%
20133,740170.46%
20143,757170.45%
20153,774170.45%
20163,791170.45%
20173,808170.45%
20183,825170.45%
20193,842170.44%
20203,863210.55%
20213,880170.44%
20223,897170.44%

Rochester Population by Year