Town guide

St. Augustine, Illinois

St. Augustine is a village in Knox County, Illinois, home to about 92 people across 0.6 square miles. Its ZIP code is 61474.

Population92156 per sq mi
Median home value$49,000Census, as estimated by owners

ZIP codes in St. Augustine

1 ZIP code
Saint Augustine, IL61474Not enough recent sales for market figures yet.

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Around St. Augustine

Distances

Nearest major airportSt. Louis Lambert International Airport (STL)137 miles away
Closer regional airportGeneral Wayne A. Downing Peoria International Airport (PIA)36 miles away
Nearest city of 250,000+St. Louis, MO145 miles away
Nearest city of 1 million+Chicago, IL159 miles away

Straight-line distances from the center of St. Augustine; driving is longer.

Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.

Who represents St. Augustine

Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.

Population over time

St. Augustine had 119 residents in the 2020 census, down 22% since 2000.

It’s the 1345th largest of 1,450 towns in Illinois by population.

Knox County grew from 43,612 residents in 1900 to 49,967 in 2020.

St. Augustine population by census2000: 152, 2010: 120, 2020: 119152200012020101192020

Knox County, 1900–2020

Knox County population, 1900 to 20201900: 43,612, 1910: 46,159, 1920: 46,727, 1930: 51,336, 1940: 52,250, 1950: 54,366, 1960: 61,280, 1970: 61,280, 1980: 61,607, 1990: 56,393, 2000: 55,836, 2010: 52,919, 2020: 49,96744K’00’1047K’20’3052K’40’5061K’60’7062K’80’9056K’00’1050K’20

Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).

Weather by month

Average highs peak around 84°F in summer, and winter lows average 13°F. About 37.8 inches of rain and melted snow fall in a typical year, with about 24 inches of snow.

Average high and low temperature and precipitation by month near St. AugustineJan: high 31°F, low 13°F, 1.8 in; Feb: high 36°F, low 17°F, 1.8 in; Mar: high 48°F, low 26°F, 2.4 in; Apr: high 62°F, low 37°F, 3.6 in; May: high 72°F, low 49°F, 5 in; Jun: high 81°F, low 59°F, 4.4 in; Jul: high 84°F, low 62°F, 4.2 in; Aug: high 82°F, low 60°F, 3.7 in; Sep: high 77°F, low 51°F, 3.7 in; Oct: high 64°F, low 40°F, 2.9 in; Nov: high 49°F, low 29°F, 2.4 in; Dec: high 36°F, low 20°F, 1.9 in31°13°Jan1.836°17°Feb1.848°26°Mar2.462°37°Apr3.672°49°May5.081°59°Jun4.484°62°Jul4.282°60°Aug3.777°51°Sep3.764°40°Oct2.949°29°Nov2.436°20°Dec1.9Rain and melted snow, inches

Source: NOAA 1991–2020 climate normals, Avon, IL weather station (6 miles away).

Jobs in Knox County

14,242 jobs at 968 businesses in Knox County. The biggest industries by employees:

Largest industries in Knox CountyRetail trade: 3,259 jobs; Health care and social assistance: 2,853 jobs; Hotels and restaurants: 1,552 jobs; Manufacturing: 1,501 jobs; Educational services: 974 jobs; Wholesale trade: 676 jobs; Other services: 614 jobs; Administrative and support: 439 jobsRetail trade 23% Health care and social assistance 20% Hotels and restaurants 11% Manufacturing 11% Educational services 7% Wholesale trade 5% Other services 4% Administrative and support 3%

Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).

Health care

1 doctors and other health care providers list an office in St. Augustine.

Nearest hospitals

  • St. Mary Medical CenterGeneral hospital · emergency room · CMS rating 2 of 5 · Galesburg18.0 miles
  • Osf Holy Family Medical CenterCritical access hospital · emergency room · CMS rating 4 of 5 · Monmouth19.7 miles
  • Graham Hospital AssociationGeneral hospital · emergency room · CMS rating 3 of 5 · Canton21.6 miles

Providers with an office here

Mental health providers1

Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.

Places in and around St. Augustine

Grocery stores

  • Hi-Lo Grocery4.8 mi

Theaters and performance venues

  • Ingersoll Centennial Chapel3.2 mi

Counts are within about 1 mile of the center of town.

Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.

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Where St. Augustine is

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Towns near St. Augustine

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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.