Sterling township, Illinois Population 2024

16,917

Sterling township is located in Whiteside County Illinois. Sterling township has a 2024 population of 16,917. Sterling township is currently declining at a rate of -0.19% annually and its population has decreased by -2.32% since the most recent census, which recorded a population of 17,319 in 2020.

The average household income in Sterling township is $77,227 with a poverty rate of 14.06%. The median age in Sterling township is 43.2 years: 39.4 years for males, and 45.4 years for females.

Sterling township Demographics

According to the most recent ACS, the racial composition of Sterling township was:

  • White: 81.1%
  • Two or more races: 11.04%
  • Other race: 3.52%
  • Black or African American: 2.26%
  • Asian: 1.54%
  • Native American: 0.45%
  • Native Hawaiian or Pacific Islander: 0.08%
Land Area (mi²)
23.4 sq mi
Density (mi²)
723.90/sq mi
Growth Since 2020
-2.32% (-402)
The current population of Sterling township, Illinois is 16,917 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 17,319.

Population by Race

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Race
Population
Percentage (of total)
White14,02181.1%
Two or more races1,90911.04%
Other race6093.52%
Black or African American3912.26%
Asian2671.54%
Native American780.45%
Native Hawaiian or Pacific Islander140.08%

White

Two or more races

Other race

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Sterling township Population by Race

Sterling township Population Pyramid 2024

Sterling township Median Age

43.2

Total

39.4

Male

45.4

Female

Sterling township Adults

There are 13,874 adults, (3,905 of whom are seniors) in Sterling township.

Sterling township Age Dependency

73.4

Age Dependency Ratio

39.2

Old Age Dependency Ratio

34.3

Child Dependency Ratio

Sterling township Sex Ratio

Female8,35148.3%
Male8,93851.7%

Sterling township Population by Age

Sterling township Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All7,4002.2766.133.9
Non Family3,1311.245.254.8
Married2,7192.97919
Female1,1993.2165.834.2
Male3513.256139

2.9

Average Family Size

2.27

Average Household Size

66.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Sterling township Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade6845.67%
Associates Degree1,28710.67%
Bachelors Degree1,27310.55%
Graduate Degree9627.97%
High School Graduate4,58838.02%
Less Than 9th Grade4643.85%
Some College2,80923.28%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Sterling township Educational Attainment by Sex (over 25)

Sterling township Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White9,0388,3051,712
Hispanic2,2851,926396
2+ Races884763187
Other Race46033822
Asian21318570
Black20818951
Native American634242
Islander14140

The highest rate of high school graduation is among islander people with a rate of 100%.

The highest rate of bachelors degrees is among native american people with a rate of 66.67%.

Sterling township Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$53,315$56,223$48,795
Graduate Degree$47,500$77,946$43,673
High School Graduate$37,563$40,706$27,500
Less Than 9th Grade$24,583$43,750$19,567
Overall$41,761$44,363$37,705
Some College$43,321$45,042$37,075

$41,761

Average Earnings

$44,363

Average Male

$37,705

Average Female

Sterling township Earnings by Educational Attainment

Sterling township Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Sterling township Language

87.33% of Sterling township residents speak only English, while 12.67% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 9.43% of the population.

Sterling township Language

Sterling township Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White11,3651,29411.39%
Multiple1,89254028.54%
Hispanic4,14149411.93%
Black3738923.86%
Other609589.52%
Asian2673312.36%

14.06%

Overall Poverty Rate

13.02%

Male Poverty Rate

15.18%

Female Poverty Rate

Poverty in Sterling township

The race most likely to be in poverty in Sterling township is Multiple, with 28.54% below the poverty level.

The race least likely to be in poverty in Sterling township is Other, with 9.52% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.55%. Among those working part-time, it was 16.25%, and for those that did not work, the poverty rate was 19.04%.

Sterling township Poverty

rate

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Rate
Poverty
Less Than 9th Grade21.2%
Some College10.29%
High School10.1%
Bachelors or Greater6.43%

Sterling township Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed43.89%
Female Employed8.47%
Female Unemployed6.42%
Male Employed4.67%

Sterling township Poverty Rate by Employment Status and Sex

Sterling township Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$69,458$94,486
Households$52,861$77,227
Married Families$94,583$-999,999,999
Non Families$29,315$44,739

mean

median

Income by Household Type

Sterling township Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

41.3%

Overall Marriage Rate

41.9%

Male Marriage Rate

40.7%

Female Marriage Rate

Sterling township Married by Age and Sex

male

female

Sterling township 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 55-64.

Sterling township Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Sterling township Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,152

Number of Veterans

1,063

Male Veterans

89

Female Veterans

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War
Veterans
Vietnam497
Korea184
Second Gulf War157
First Gulf War144
World War II23

Sterling township Veterans by War

count

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Age Group
Veterans
65 to 74389
75+384
55 to 64166
35 to 54152
18 to 3461

Sterling township Veterans by Age

count

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Name
Veterans
% of Total
White9580.08308039198681814
Hispanic2650.0912534435261708
2+ Races1140.09652836579170194
Other Race690.12147887323943662
Black110.037037037037037035

Sterling township Veterans by Race

Sterling township Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.16%

Veteran Poverty Rate

38.22%

Veteran Disability Rate

Sterling township Veterans by Education

LaborForceParticipation

61.4%

Labor Force Participation

58.4%

Employment Rate

4.9%

Unemployment Rate

Sterling township Employment by Age

LaborForceParticipation

Sterling township Employment by Race

LaborForceParticipation

Sterling township Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

78.72%

Born in Sterling township

95.22%

Native Born

4.78%

Foreign Born

3.11%

Non Citizen

1.68%

Naturalized

Place of Birth

95.22% of Sterling township residents were born in the United States, with 78.72% having been born in Illinois. 3.11% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Sterling township Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202916,757-32-0.19%
202816,789-32-0.19%
202716,821-32-0.19%
202616,853-32-0.19%
202516,885-32-0.19%
202416,917-32-0.19%
202316,949-32-0.19%
202216,981-243-1.41%
202117,224-95-0.55%
202017,3193582.11%
201916,961-109-0.64%
201817,070-175-1.01%
201717,245-158-0.91%
201617,403-138-0.79%
201517,541-35-0.2%
201417,576-109-0.62%
201317,685-107-0.6%
201217,792-157-0.87%
201117,949-81-0.45%
201018,03000%

Sterling township Population by Year