South Wilmington, Illinois Population 2021

636
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South Wilmington is a city located in Grundy County Illinois. With a 2020 population of 636, it is the 791st largest city in Illinois and the 12279th largest city in the United States . South Wilmington is currently declining at a rate of -0.62% annually and its population has decreased by -6.61% since the most recent census, which recorded a population of 681 in 2010. South Wilmington reached it's highest population of in . Spanning over 0 miles, South Wilmington has a population density of 1,293 people per square mile.

The average household income in South Wilmington is $87,623 with a poverty rate of 7.75%. The median rental costs in recent years comes to $925 per month, and the median house value is $127,800. The median age in South Wilmington is 40.7 years, 38.5 years for males, and 43.5 years for females.

South Wilmington Demographics

According to the most recent ACS, the racial composition of South Wilmingtonwas:

  • White: 98.16%
  • Two or more races: 1.84%
  • Black or African American: 0.00%
  • Native American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of South Wilmington, Illinois is 636 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 644.The last official US Census in 2010 recorded the population at 681.

South Wilmington, Illinois Population 2021

Population by Race

Race Population Percentage
White74798.16%
Two or More Races141.84%
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South Wilmington Population by Race

South Wilmington Population Pyramid $2021

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South Wilmington Median Age

40.7


Total

38.5


Male

43.5


Female

South Wilmington Adults

There are 602 adults, (125 of whom are seniors) in South Wilmington.

South Wilmington Age Dependency

59.5

Age Dependency Ratio

26.2

Old Age Dependency Ratio

33.3

Child Dependency Ratio

South Wilmington Sex Ratio

Female

361

47.44%

Male

400

52.56%

South Wilmington Population by Age

South Wilmington Renter vs Owner Occupied by Household Type

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South Wilmington Household Types

Type Owner Renter
Male70%30%
Non Family73.9%26.1%
All78.8%21.2%
Female81.3%18.8%
Married82.6%17.4%

78.8%

Rate of Home Ownership

South Wilmington Households and Families

Type Count Average Size Owned
All3352.2778.8
Married1842.8282.6
Non Family1151.1673.9
Male203.370
Female162.6981.3

2.75

Average Family Size

2.27

Average Household Size

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South Wilmington Households by Type

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Education Attained Count Percentage
Less Than 9th Grade30.55%
9th to 12th Grade509.21%
High School Graduate23242.73%
Some College17932.97%
Associates Degree325.89%
Bachelors Degree315.71%
Graduate Degree162.95%
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South Wilmington Educational Attainment by Sex (over 25)

South Wilmington Educational Attainment by Race

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Race Total High School Bachelors
White53348047
2+ Races1010
Hispanic44

The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 8.82%.

South Wilmington Educational Attainment by Race

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Name Average Male Female
Overall$55,417$70,000$33,393
Less Than 9th Grade$$68,625$
High School Graduate$62,614$68,375$14,375
Some College$54,688$76,875$34,643
Bachelors Degree$54,167$$54,375
Graduate Degree$51,250$$51,250

$55,417

Average Earnings

$70,000

Average Male

$33,393

Average Female

South Wilmington Earnings by Educational Attainment

South Wilmington Language by Age

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South Wilmington Language

98.75% of South Wilmington residents speak only English, while 1.25% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 0.69% of the population.

South Wilmington Language

South Wilmington Poverty by Race

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7.75%

Overall Poverty Rate

5.50%

Male Poverty Rate

10.25%

Female Poverty Rate

Poverty in South Wilmington

The race most likely to be in poverty in South Wilmington is White, with 7.90% below the poverty level.

The race least likely to be in poverty in South Wilmington is White, with 7.90% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.04%. Among those working part-time, it was 3.40%, and for those that did not work, the poverty rate was 13.36%.

South Wilmington Poverty

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Name Poverty
High School9.91%
Some College4.74%
Less Than 9th Grade1.89%
Bachelors or Greater0.00%

South Wilmington Poverty Rate by Education

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Rate Poverty
Female Employed3.57%
Male Employed2.19%
Female Unemployed0.00%
Male Unemployed0.00%

South Wilmington Poverty Rate by Employment Status and Sex

South Wilmington Income by Household Type

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Name Median Mean
Households$75,417$87,623
Families$85,500$98,663
Married Families$87,500-
Non Families$49,583$56,193
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Income by Household Type

South Wilmington Marital Status

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Marriage Rates

60.9%

Overall Marriage Rate

56.8%

Male Marriage Rate

65.5%

Female Marriage Rate

South Wilmington Married by Age and Sex

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South Wilmington 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 55-64.

South Wilmington Marital Status by Race

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South Wilmington Marital Status

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38

Number of Veterans

38

Male Veterans

Female Veterans

War Veterans
Vietnam19
First Gulf War10
Second Gulf War3
Korea2
World War II

South Wilmington Veterans by War

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Age Group Veterans
65 to 7419
35 to 5410
75+6
18 to 343
55 to 64

South Wilmington Veterans by Age

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Name Veterans % of Total
White345.74%
Hispanic4100.00%
2+ Races440.00%

South Wilmington Veterans by Race

South Wilmington Veterans by Education

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2.63%

Veteran Poverty Rate

44.74%

Veteran Disability Rate

South Wilmington Veterans by Education

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63.2%

Labor Force Participation

60.4%

Employment Rate

4.4%

Unemployment Rate

South Wilmington Employment by Age

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South Wilmington Employment by Race

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South Wilmington 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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86.20%

Born in South Wilmington

99.47%

Native Born

0.53%

Foreign Born

0.53%

Non Citizen

0.00%

Naturalized

Place of Birth

99.47% of South Wilmington residents were born in the United States, with 86.20% having been born in Illinois. 0.53% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

South Wilmington Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
2021636-4-0.62%
2020640-4-0.62%
2019644-4-0.62%
2018648-4-0.61%
2017652-4-0.61%
2016656-4-0.61%
2015660-6-0.90%
2014666-3-0.45%
2013669-5-0.74%
2012674-2-0.30%
2011676-6-0.88%
20106820.00%

South Wilmington Population by Year