Big Rock, Illinois Population 2021

1,109
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Big Rock is a city located in Kane County Illinois. With a 2020 population of 1,109, it is the 627th largest city in Illinois and the 9901st largest city in the United States . Big Rock is currently declining at a rate of -0.89% annually and its population has decreased by -1.51% since the most recent census, which recorded a population of 1,126 in 2010. Big Rock reached it's highest population of in . Spanning over 4 miles, Big Rock has a population density of 257 people per square mile.

The average household income in Big Rock is $119,924 with a poverty rate of 2.91%. The median rental costs in recent years comes to $1,100 per month, and the median house value is $237,400. The median age in Big Rock is 46.9 years, 46.4 years for males, and 47.9 years for females.

Big Rock Demographics

According to the most recent ACS, the racial composition of Big Rockwas:

  • White: 96.36%
  • Two or more races: 1.54%
  • Native American: 1.21%
  • Black or African American: 0.57%
  • Other race: 0.32%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Big Rock, Illinois is 1,109 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 1,129.The last official US Census in 2010 recorded the population at 1,126.

Big Rock, Illinois Population 2021

Population by Race

Race Population Percentage
White1,19196.36%
Two or More Races191.54%
American Indian and Alaska Native151.21%
Black or African American70.57%
Some Other Race40.32%
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Big Rock Population by Race

Big Rock Population Pyramid $2021

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Big Rock Median Age

46.9


Total

46.4


Male

47.9


Female

Big Rock Adults

There are 987 adults, (279 of whom are seniors) in Big Rock.

Big Rock Age Dependency

74.6

Age Dependency Ratio

39.4

Old Age Dependency Ratio

35.2

Child Dependency Ratio

Big Rock Sex Ratio

Female

555

44.90%

Male

681

55.10%

Big Rock Population by Age

Big Rock Renter vs Owner Occupied by Household Type

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Big Rock Household Types

Type Owner Renter
Female16.7%83.3%
Non Family66.7%33.3%
All87.7%12.3%
Married92.2%7.8%
Male100%0%

87.7%

Rate of Home Ownership

Big Rock Households and Families

Type Count Average Size Owned
All4232.9287.7
Married3223.2292.2
Non Family661.4266.7
Male292.9100
Female63.3316.7

3.17

Average Family Size

2.92

Average Household Size

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Big Rock Households by Type

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Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade404.38%
High School Graduate27530.12%
Some College27229.79%
Associates Degree9610.51%
Bachelors Degree13715.01%
Graduate Degree9310.19%
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Big Rock Educational Attainment by Sex (over 25)

Big Rock Educational Attainment by Race

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Race Total High School Bachelors
White858822223
Hispanic46427
2+ Races1212
Native American1111
Other Race4

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

The highest rate of bachelors degrees is among white people with a rate of 25.99%.

Big Rock Educational Attainment by Race

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Name Average Male Female
Overall$51,875$55,500$43,750
Less Than 9th Grade$33,750$$
High School Graduate$41,250$41,420$38,750
Some College$53,708$57,188$39,583
Bachelors Degree$57,917$67,083$35,000
Graduate Degree$49,861$$51,250

$51,875

Average Earnings

$55,500

Average Male

$43,750

Average Female

Big Rock Earnings by Educational Attainment

Big Rock Language by Age

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Big Rock Language

98.28% of Big Rock residents speak only English, while 1.72% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.55% of the population.

Big Rock Language

Big Rock Poverty by Race

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Name Total In Poverty Poverty Rate
White1,158252.16%
Hispanic511121.57%
Native151173.33%

2.91%

Overall Poverty Rate

3.23%

Male Poverty Rate

2.52%

Female Poverty Rate

Poverty in Big Rock

The race most likely to be in poverty in Big Rock is Native, with 73.33% below the poverty level.

The race least likely to be in poverty in Big Rock is White, with 2.16% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.87%. Among those working part-time, it was 3.67%, and for those that did not work, the poverty rate was 1.91%.

Big Rock Poverty

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Name Poverty
High School9.82%
Some College0.82%
Bachelors or Greater0.00%
Less Than 9th Grade0.00%

Big Rock Poverty Rate by Education

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Rate Poverty
Male Unemployed16.67%
Female Employed4.40%
Male Employed4.21%
Female Unemployed0.00%

Big Rock Poverty Rate by Employment Status and Sex

Big Rock Income by Household Type

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Name Median Mean
Households$96,369$119,924
Families$102,740$130,107
Married Families$103,846-
Non Families$67,222$62,644
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Income by Household Type

Big Rock Marital Status

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Marriage Rates

65.8%

Overall Marriage Rate

61.0%

Male Marriage Rate

71.6%

Female Marriage Rate

Big Rock Married by Age and Sex

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Big Rock Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Big Rock Marital Status by Race

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Big Rock Marital Status

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89

Number of Veterans

89

Male Veterans

Female Veterans

War Veterans
Vietnam47
First Gulf War19
Korea7
World War II6
Second Gulf War

Big Rock Veterans by War

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Age Group Veterans
75+33
65 to 7433
35 to 5419
55 to 644
18 to 34

Big Rock Veterans by Age

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Big Rock Veterans by Race

Big Rock Veterans by Education

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0.00%

Veteran Poverty Rate

40.45%

Veteran Disability Rate

Big Rock Veterans by Education

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61.4%

Labor Force Participation

59.2%

Employment Rate

3.5%

Unemployment Rate

Big Rock Employment by Age

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Big Rock Employment by Race

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Big Rock Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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78.96%

Born in Big Rock

98.30%

Native Born

1.70%

Foreign Born

0.32%

Non Citizen

1.38%

Naturalized

Place of Birth

98.30% of Big Rock residents were born in the United States, with 78.96% having been born in Illinois. 0.32% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Big Rock Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20211,109-10-0.89%
20201,119-10-0.89%
20191,129-10-0.88%
20181,139-9-0.78%
20171,148-4-0.35%
20161,152-1-0.09%
20151,15340.35%
20141,14960.52%
20131,14330.26%
20121,14020.18%
20111,13850.44%
20101,1330.00%

Big Rock Population by Year