Saint Augustine ZIP Codes — Knox County, IL

There is one unique ZIP code in Saint Augustine, Illinois and it is 61474. Area code: 309.

ZIP codes

26.13

sq mi land

0.01

sq mi water

309

area code

Saint Augustine, IL ZIP code map

About Saint Augustine, IL

Saint Augustine, Illinois is a small, quaint village located within the scenic Knox County. Known for its tight-knit community atmosphere, this charming place offers residents and visitors a slice of Midwestern life. With its rich history and serene landscape, Saint Augustine is a notable stop in western Illinois.

Location & geography

Situated in Knox County, Saint Augustine is approximately 15 miles northwest of Galesburg, a larger nearby city. The village spans a land area of 26.13 square miles, complemented by a minimal water area of 0.01 square miles, which reflects its primarily rural character. The terrain is predominantly flat, featuring the lush agricultural fields typical of central Illinois.

Community & economy

The community of Saint Augustine is characterized by its friendly atmosphere and strong social ties among residents. The local economy is primarily supported by agriculture and small businesses, which provide essential services to the population. Daily life in Saint Augustine embodies the values of hard work and community involvement, with various events and gatherings held throughout the year.

Transportation

Saint Augustine is conveniently located near major highways, including Illinois Route 164, which connects to neighboring cities. The closest major airport is the Galesburg Municipal Airport, located approximately 15 miles away, providing regional air travel options. For local travel, residents typically rely on personal vehicles to navigate between nearby towns and attractions.

History

Saint Augustine was founded in the mid-19th century, establishing itself as a vital agricultural community in Knox County. Key industries historically revolved around farming and trade, supporting both local and regional economies. Over the years, the village has retained its agricultural roots while also fostering a sense of local culture and history.

Did you know?

One little-known fact about Saint Augustine is its close association with the rich agricultural heritage of Knox County, often celebrated in community festivals. Additionally, the village is known for its peaceful rural setting, which attracts those seeking a quiet lifestyle away from urban centers.

ZIP codes for Saint Augustine, IL (1)

ZIP code	City	County	Map
61474	Saint Augustine	Knox	View map

Demographics & statistics

285

Population

36.1

Median age

$54,338

Median household income

$23,444

Per capita income

$70,300

Median home value

Median monthly rent

77.6%

Home ownership

10.2%

Poverty rate

12.1%

Unemployment

105

Housing units

19.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	81	28.4%
18 and over	204	71.6%
65 and over	57	20.0%
Median age	36.1 years

Race & ethnicity

White 99.3%

Hispanic or Latino 0.3%

Two or more races 0.3%

Group	Count	%
White	284	99.3%
Hispanic or Latino	1	0.3%
Two or more races	1	0.3%

Household income

Under $10k 12.0%

$10k–$15k 3.2%

$15k–$25k 13.6%

$25k–$35k 4.8%

$35k–$50k 4.8%

$50k–$75k 47.2%

$75k–$100k 1.6%

$100k–$150k 4.8%

$150k–$200k 8.0%

Range	% of households
Under $10k	12.0%
$10k–$15k	3.2%
$15k–$25k	13.6%
$25k–$35k	4.8%
$35k–$50k	4.8%
$50k–$75k	47.2%
$75k–$100k	1.6%
$100k–$150k	4.8%
$150k–$200k	8.0%
Median income	$54,338

Housing

Home values

Under $50k 27.8%

$50k–$100k 59.8%

$100k–$150k 11.3%

$300k–$500k 1.0%

Housing overview

Metric	Value
Median home value	$70,300
Median rent / month	$0
Owner occupied	77.6%
Renter occupied	22.4%
Vacant	6.0%
Single-family detached	91.0%
Large apartment buildings	0.8%
Mobile homes	8.3%
Median rooms	6.6
Avg household size (owned)	2.57

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	3.8%
1980–1989	0.0%
1970–1979	9.8%
1960–1969	1.5%
1950–1959	23.3%
1940–1949	8.3%
1939 or earlier	53.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	12.0%
2 bedrooms	31.6%
3 bedrooms	27.1%
4 bedrooms	19.5%
5+ bedrooms	9.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.4%
1 vehicle	26.4%
2 vehicles	61.6%
3 or more	9.6%

Heating fuel

Fuel type	%
Utility gas	60.0%
Electricity	4.0%
Propane / LP gas	36.0%

Households & families

Household type	Count	%
Married-couple family	65	52.0%
Cohabiting couple	0	0.0%
Male householder, no spouse	34	27.2%
Female householder, no spouse	26	20.8%
Households with children under 18	27	21.6%
Households with seniors (65+)	47	37.6%
Average household size	2.28

Marital status

Status	Male	Female
Never married	26.9%	6.0%
Married	59.6%	65.0%
Separated	0.0%	0.0%
Widowed	8.7%	15.0%
Divorced	4.8%	14.0%

Education

Less than 9th grade 1.1%

Some HS, no diploma 7.3%

HS graduate 30.3%

Some college, no degree 28.7%

Associate's degree 12.9%

Bachelor's degree 19.1%

Graduate / professional 0.6%

Metric	%
HS diploma or higher	91.6%
Bachelor's or higher	19.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	6	8.0%
Kindergarten	6	8.0%
Elementary school	61	81.3%
High school	0	0.0%
College / grad school	2	2.7%

Employment

Industry of employment

Education & healthcare 35.3%

Agriculture & mining 16.7%

Construction 14.7%

Transportation & utilities 12.7%

Retail trade 6.9%

Arts, food & hospitality 4.9%

Manufacturing 3.9%

Finance & real estate 2.9%

Professional & management 2.0%

Occupation

Category	%
Management, business & arts	35.3%
Service	20.6%
Sales & office	8.8%
Natural resources & construction	19.6%
Production & transportation	15.7%

Employment type

Type	%
Private sector	77.5%
Government	3.9%
Self-employed	18.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.3%
Carpool	0.0%
Public transit	0.0%
Walk	2.0%
Other means	0.0%
Avg commute (minutes)	18.8

Poverty

All people 10.2%

Under 18 years 2.5%

18 and over 13.2%

Married-couple families 3.1%

Female-led households 0.0%

Income support

Source	% of households
Social Security	40.0%
Retirement income	36.0%
Supplemental Security	3.2%
Cash public assistance	10.4%
Food stamps / SNAP	28.0%

Health indicators

Condition	%
High blood pressure	40.0%
High cholesterol	39.6%
Heart disease	9.7%
Stroke	4.5%
Asthma	10.0%
Arthritis	34.0%
Kidney disease	4.0%
Pulmonary disease	10.4%
Cancer	8.8%

Behavior / access	%
Binge drinking	13.1%
No physical activity	28.9%
Less than 7 hrs sleep	33.0%
Fair or poor health	18.3%
Poor mental health	12.6%
Poor physical health	12.5%
No health insurance	11.0%
Visited doctor (checkup)	78.4%
Visited dentist	59.8%
Cholesterol screening	90.5%
Teeth loss	18.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	19	9.3%

Disability	%
Any disability	8.8%
Under 18	0.0%
18–64 years	12.2%
65 and over	12.3%

Health insurance coverage

Type	%
Private insurance	68.4%
Public insurance	41.8%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	271	95.1%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	284	99.6%
Born in same state	284	99.6%
Born in different state	260	91.2%
Foreign born	0	0.0%
Naturalized citizen	1	0.4%
Not a US citizen	1	100.0%

Ancestry

Ancestry	Count	%
Italian	51	17.9%
French	35	12.3%
English	13	4.6%

Ancestry	Count	%
Arab	6	2.1%
Polish	2	0.7%

Technology access

Metric	% of households
Computer access	43.9%
Internet access	88.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Saint Augustine, IL have?

Saint Augustine, IL has one ZIP code: 61474. Each ZIP code serves a distinct delivery area within the city and surrounding region.