Town guide

Walnut Hill, Illinois

Walnut Hill is a village in Jefferson County, Illinois, home to about 127 people across 0.4 square miles. It has no ZIP code of its own: it’s part of 62893.

Homes sold for a median of $87 per square foot in the three months ending August 2026, a seller’s market.

Population127334 per sq mi
Median home value$31,600Census, as estimated by owners
Price per sq ft$87Sold homes, 3 months to August 2026
Sold over asking0%Latest 3 months

ZIP codes in Walnut Hill

1 ZIP code, 1 shared with neighboring towns

Each card is that ZIP code’s whole market, including any part outside Walnut Hill. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology

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We’re writing up Walnut Hill’s story and what everyday life there is like, for people thinking about moving in.

  • History
  • What it’s like to live there
  • Getting around
  • Things to do

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Around Walnut Hill

Distances

Nearest major airportSt. Louis Lambert International Airport (STL)75 miles away
Closer regional airportScott AFB/Midamerica Airport (BLV)44 miles away
Nearest city of 250,000+St. Louis, MO66 miles away
Nearest city of 1 million+Chicago, IL243 miles away

Straight-line distances from the center of Walnut Hill; driving is longer.

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

Who represents Walnut Hill

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

Walnut Hill had 95 residents in the 2020 census, down 13% since 2000.

It’s the 1303rd largest of 1,450 towns in Illinois by population.

Jefferson County grew from 28,133 residents in 1900 to 37,113 in 2020.

Walnut Hill population by census2000: 109, 2010: 108, 2020: 9510920001082010952020

Jefferson County, 1900–2020

Jefferson County population, 1900 to 20201900: 28,133, 1910: 29,111, 1920: 28,480, 1930: 31,034, 1940: 34,375, 1950: 35,892, 1960: 32,315, 1970: 31,446, 1980: 36,552, 1990: 37,020, 2000: 40,045, 2010: 38,827, 2020: 37,11328K’00’1028K’20’3034K’40’5032K’60’7037K’80’9040K’00’1037K’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 88°F in summer, and winter lows average 21°F. About 44.8 inches of rain and melted snow fall in a typical year, with about 12 inches of snow.

Average high and low temperature and precipitation by month near Walnut HillJan: high 39°F, low 21°F, 2.9 in; Feb: high 44°F, low 24°F, 2.6 in; Mar: high 54°F, low 33°F, 3.9 in; Apr: high 66°F, low 44°F, 4.8 in; May: high 75°F, low 54°F, 5.2 in; Jun: high 84°F, low 62°F, 4.1 in; Jul: high 88°F, low 66°F, 3.9 in; Aug: high 87°F, low 64°F, 3.5 in; Sep: high 81°F, low 56°F, 3.3 in; Oct: high 69°F, low 45°F, 3.5 in; Nov: high 55°F, low 34°F, 4.1 in; Dec: high 43°F, low 26°F, 3 in39°21°Jan2.944°24°Feb2.654°33°Mar3.966°44°Apr4.875°54°May5.284°62°Jun4.188°66°Jul3.987°64°Aug3.581°56°Sep3.369°45°Oct3.555°34°Nov4.143°26°Dec3.0Rain and melted snow, inches

Source: NOAA 1991–2020 climate normals, Iuka 12 Sw, IL weather station (4 miles away).

Jobs in Jefferson County

19,260 jobs at 882 businesses in Jefferson County. The biggest industries by employees:

Largest industries in Jefferson CountyManufacturing: 6,374 jobs; Health care and social assistance: 3,516 jobs; Retail trade: 2,276 jobs; Transportation and warehousing: 2,111 jobs; Hotels and restaurants: 1,595 jobs; Wholesale trade: 906 jobs; Other services: 668 jobs; Finance and insurance: 386 jobsManufacturing 33% Health care and social assistance 18% Retail trade 12% Transportation and warehousing 11% Hotels and restaurants 8% Wholesale trade 5% Other services 4% Finance and insurance 2%

Source: U.S. Census Bureau County Business Patterns 2022 (private employers; jobs counted where people work).

Health care

Nearest hospitals

  • Ssm Health St. Mary's Hospital -CentraliaGeneral hospital · emergency room · CMS rating 3 of 5 · Centralia6.2 miles
  • Deaconess Illinois CrossroadsGeneral hospital · emergency room · Mount Vernon11.9 miles
  • Good Samaritan Regional Hlth CenterGeneral hospital · emergency room · CMS rating 4 of 5 · Mount Vernon12.8 miles

Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.

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Where Walnut Hill is

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Towns near Walnut Hill

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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.