St. Augustine, Illinois Population 2024

111

St. Augustine is a city located in Fulton County, Knox County, and Warren County Illinois. St. Augustine has a 2024 population of 111. St. Augustine is currently declining at a rate of -1.77% annually and its population has decreased by -5.13% since the most recent census, which recorded a population of 117 in 2020.

The average household income in St. Augustine is $49,597 with a poverty rate of 13.6%. The median age in St. Augustine is 54.5 years: 55.3 years for males, and 54.1 years for females.

St. Augustine Demographics

According to the most recent ACS, the racial composition of St. Augustine was:

  • White: 99.2%
  • Two or more races: 0.8%
  • Black or African American: 0%
  • Native American: 0%
  • Asian: 0%
  • Native Hawaiian or Pacific Islander: 0%
  • Other race: 0%
Land Area (mi²)
0.6 sq mi
Density (mi²)
187.10/sq mi
Growth Since 2020
-5.13% (-6)
The current population of St. Augustine, Illinois is 111 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 117.

Population by Race

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Race
Population
Percentage (of total)
White12499.2%
Two or more races10.8%
Black or African American00%
Native American00%
Asian00%
Native Hawaiian or Pacific Islander00%
Other race00%

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

St. Augustine Population by Race

St. Augustine Population Pyramid 2024

St. Augustine Median Age

54.5

Total

55.3

Male

54.1

Female

St. Augustine Adults

There are 105 adults, (25 of whom are seniors) in St. Augustine.

St. Augustine Age Dependency

56.3

Age Dependency Ratio

31.3

Old Age Dependency Ratio

25

Child Dependency Ratio

St. Augustine Sex Ratio

Female6048%
Male6552%

St. Augustine Population by Age

St. Augustine Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All622.0287.112.9
Married272.111000
Non Family261.0469.230.8
Female94.561000
Male0000

2.72

Average Family Size

2.02

Average Household Size

87.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

St. Augustine Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade88.51%
Associates Degree1111.7%
Bachelors Degree77.45%
Graduate Degree11.06%
High School Graduate3436.17%
Less Than 9th Grade22.13%
Some College3132.98%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

St. Augustine Educational Attainment by Sex (over 25)

St. Augustine Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White93837
2+ Races111
Hispanic111

The highest rate of high school graduation is among 2+ races people with a rate of 100%.

The highest rate of bachelors degrees is among 2+ races people with a rate of 100%.

St. Augustine Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$0$0$0
Graduate Degree$0$0$0
High School Graduate$25,000$0$22,083
Less Than 9th Grade$0$0$0
Overall$24,792$50,625$22,917
Some College$24,375$50,625$23,333

$24,792

Average Earnings

$50,625

Average Male

$22,917

Average Female

St. Augustine Earnings by Educational Attainment

St. Augustine Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

St. Augustine Language

99.1% of St. Augustine residents speak only English, while 0.9% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.9% of the population.

St. Augustine Language

St. Augustine Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White1181714.41%

13.6%

Overall Poverty Rate

20%

Male Poverty Rate

6.67%

Female Poverty Rate

Poverty in St. Augustine

The race most likely to be in poverty in St. Augustine is White, with 14.41% below the poverty level.

The race least likely to be in poverty in St. Augustine is White, with 14.41% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 13.16%. Among those working part-time, it was 12.5%, and for those that did not work, the poverty rate was 16.28%.

St. Augustine Poverty

rate

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Rate
Poverty
High School17.65%
Some College14.29%
Less Than 9th Grade0%
Bachelors or Greater0%

St. Augustine Poverty Rate by Education

rate

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Rate
Poverty
Male Employed17.39%
Female Employed12.12%
Male Unemployed0%
Female Unemployed0%

St. Augustine Poverty Rate by Employment Status and Sex

St. Augustine Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$58,750$62,664
Households$48,750$49,597
Married Families$60,625$-999,999,999
Non Families$26,250$31,508

mean

median

Income by Household Type

St. Augustine Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

50.5%

Overall Marriage Rate

49.1%

Male Marriage Rate

52.1%

Female Marriage Rate

St. Augustine Married by Age and Sex

male

female

St. Augustine Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

St. Augustine Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

St. Augustine Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

10

Number of Veterans

8

Male Veterans

2

Female Veterans

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War
Veterans
Vietnam4
Second Gulf War2
First Gulf War0
Korea0
World War II0

St. Augustine Veterans by War

count

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Age Group
Veterans
65 to 744
18 to 342
55 to 642
75+2
35 to 540

St. Augustine Veterans by Age

count

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Name
Veterans
% of Total
White109.62%

St. Augustine Veterans by Race

St. Augustine Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

20%

Veteran Poverty Rate

0%

Veteran Disability Rate

St. Augustine Veterans by Education

LaborForceParticipation

56.2%

Labor Force Participation

53.3%

Employment Rate

5.1%

Unemployment Rate

St. Augustine Employment by Age

LaborForceParticipation

St. Augustine Employment by Race

LaborForceParticipation

St. Augustine 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

85.6%

Born in St. Augustine

99.2%

Native Born

0.8%

Foreign Born

0%

Non Citizen

0.8%

Naturalized

Place of Birth

99.2% of St. Augustine residents were born in the United States, with 85.6% having been born in Illinois. 0% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

St. Augustine Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029105-1-0.94%
2028106-1-0.93%
2027107-2-1.83%
2026109-1-0.91%
2025110-1-0.9%
2024111-2-1.77%
2023113-1-0.88%
2022114-1-0.87%
2021115-2-1.71%
202011754.46%
2019112-1-0.88%
2018113-1-0.88%
2017114-3-2.56%
2016117-1-0.85%
2015118-1-0.84%
201411900%
2013119-1-0.83%
2012120-1-0.83%
201112100%
201012100%

St. Augustine Population by Year