Williamsville, Illinois Population 2021

1,473
map placeholder

Williamsville is a city located in Sangamon County Illinois. With a 2020 population of 1,473, it is the 549th largest city in Illinois and the 8782nd largest city in the United States . Williamsville is currently declining at a rate of -0.41% annually and its population has decreased by -0.20% since the most recent census, which recorded a population of 1,476 in 2010. Williamsville reached it's highest population of in . Spanning over 1 miles, Williamsville has a population density of 1,225 people per square mile.

The average household income in Williamsville is $99,726 with a poverty rate of 5.44%. The median rental costs in recent years comes to $773 per month, and the median house value is $164,600. The median age in Williamsville is 38.7 years, 35.7 years for males, and 40.4 years for females.

Williamsville Demographics

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

  • White: 98.82%
  • Two or more races: 1.05%
  • Asian: 0.13%
  • Black or African American: 0.00%
  • Native American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of Williamsville, Illinois is 1,473 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 1,485.The last official US Census in 2010 recorded the population at 1,476.

Williamsville, Illinois Population 2021

Population by Race

Race Population Percentage
White1,50498.82%
Two or More Races161.05%
Asian20.13%
Loading...

Williamsville Population by Race

Williamsville Population Pyramid $2021

Loading...

Williamsville Median Age

38.7


Total

35.7


Male

40.4


Female

Williamsville Adults

There are 1,118 adults, (150 of whom are seniors) in Williamsville.

Williamsville Age Dependency

57.2

Age Dependency Ratio

15.5

Old Age Dependency Ratio

41.7

Child Dependency Ratio

Williamsville Sex Ratio

Female

756

49.67%

Male

766

50.33%

Williamsville Population by Age

Williamsville Renter vs Owner Occupied by Household Type

map placeholder

Williamsville Household Types

Type Owner Renter
Non Family57.1%42.9%
Female65.3%34.7%
All82.6%17.4%
Married97%3%
Male100%0%

82.6%

Rate of Home Ownership

Williamsville Households and Families

Type Count Average Size Owned
All5532.7582.6
Married3363.3197
Non Family1611.4357.1
Female493.1465.3
Male73.57100

3.25

Average Family Size

2.75

Average Household Size

Loading...

Williamsville Households by Type

Loading...
Education Attained Count Percentage
Less Than 9th Grade50.51%
9th to 12th Grade171.74%
High School Graduate28629.21%
Some College22222.68%
Associates Degree9810.01%
Bachelors Degree21421.86%
Graduate Degree13713.99%
Loading...

Williamsville Educational Attainment by Sex (over 25)

Williamsville Educational Attainment by Race

Loading...
Race Total High School Bachelors
White954932345
Hispanic1313
2+ Races10106
Asian22

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

The highest rate of bachelors degrees is among 2+ races people with a rate of 60.00%.

Williamsville Educational Attainment by Race

Loading...
Name Average Male Female
Overall$51,089$59,896$45,200
Less Than 9th Grade$$$
High School Graduate$43,672$54,375$31,667
Some College$38,523$41,250$35,000
Bachelors Degree$76,250$92,188$47,105
Graduate Degree$64,583$62,250$76,875

$51,089

Average Earnings

$59,896

Average Male

$45,200

Average Female

Williamsville Earnings by Educational Attainment

Williamsville Language by Age

Loading...

Williamsville Language

98.43% of Williamsville residents speak only English, while 1.57% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.57% of the population.

Williamsville Language

Williamsville Poverty by Race

Loading...

5.44%

Overall Poverty Rate

5.29%

Male Poverty Rate

5.59%

Female Poverty Rate

Poverty in Williamsville

The race most likely to be in poverty in Williamsville is White, with 5.60% below the poverty level.

The race least likely to be in poverty in Williamsville is White, with 5.60% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.78%. Among those working part-time, it was 11.40%, and for those that did not work, the poverty rate was 6.77%.

Williamsville Poverty

Loading...
Name Poverty
High School9.44%
Some College3.75%
Bachelors or Greater0.57%
Less Than 9th Grade0.00%

Williamsville Poverty Rate by Education

Loading...
Rate Poverty
Male Unemployed75.00%
Female Employed5.17%
Male Employed2.75%
Female Unemployed0.00%

Williamsville Poverty Rate by Employment Status and Sex

Williamsville Income by Household Type

Loading...
Name Median Mean
Households$84,922$99,726
Families$102,500$113,389
Married Families$111,591-
Non Families$47,031$65,345
Loading...

Income by Household Type

Williamsville Marital Status

map placeholder

Marriage Rates

58.8%

Overall Marriage Rate

63.7%

Male Marriage Rate

54.5%

Female Marriage Rate

Williamsville Married by Age and Sex

Loading...

Williamsville 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 45-54.

Williamsville Marital Status by Race

map placeholder

Williamsville Marital Status

Loading...

63

Number of Veterans

50

Male Veterans

13

Female Veterans

War Veterans
Vietnam16
Second Gulf War16
First Gulf War13
Korea4
World War II

Williamsville Veterans by War

Loading...
Age Group Veterans
35 to 5437
65 to 7416
55 to 646
75+4
18 to 34

Williamsville Veterans by Age

Loading...
Name Veterans % of Total
White625.64%
2+ Races110.00%

Williamsville Veterans by Race

Williamsville Veterans by Education

Loading...

0.00%

Veteran Poverty Rate

15.87%

Veteran Disability Rate

Williamsville Veterans by Education

Loading...

75.4%

Labor Force Participation

73.9%

Employment Rate

1.4%

Unemployment Rate

Williamsville Employment by Age

Loading...

Williamsville Employment by Race

Loading...

Williamsville 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...

89.09%

Born in Williamsville

99.54%

Native Born

0.46%

Foreign Born

0.13%

Non Citizen

0.33%

Naturalized

Place of Birth

99.54% of Williamsville residents were born in the United States, with 89.09% having been born in Illinois. 0.13% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Williamsville Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20211,473-6-0.41%
20201,479-6-0.40%
20191,485-6-0.40%
20181,491-2-0.13%
20171,49330.20%
20161,49010.07%
20151,4890.00%
20141,489-2-0.13%
20131,49110.07%
20121,49060.40%
20111,48470.47%
20101,4770.00%

Williamsville Population by Year