Town guide

Oneida, Illinois

Oneida is a city in Knox County, Illinois, home to about 719 people across 0.8 square miles. Its ZIP code is 61467.

Homes sold for a median of $71 per square foot in the three months ending August 2026, a seller’s market.

Population719946 per sq mi
Median home value$114,100Census, as estimated by owners
Price per sq ft$71Sold homes, 3 months to August 2026
Sold over asking25%Latest 3 months

ZIP codes in Oneida

1 ZIP code

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

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We’re writing up Oneida’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 Oneida

Distances

Nearest major airportChicago O'Hare International Airport (ORD)136 miles away
Closer regional airportQuad City International Airport (MLI)29 miles away
Nearest city of 250,000+Chicago, IL142 miles away

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

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

Who represents Oneida

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

Oneida had 696 residents in the 2020 census, down 7% since 2000.

It’s the 810th largest of 1,450 towns in Illinois by population.

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

Oneida population by census2000: 752, 2010: 700, 2020: 696752200070020106962020

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 83°F in summer, and winter lows average 13°F. About 39.5 inches of rain and melted snow fall in a typical year.

Average high and low temperature and precipitation by month near OneidaJan: high 30°F, low 13°F, 1.8 in; Feb: high 35°F, low 16°F, 2.1 in; Mar: high 48°F, low 27°F, 2.6 in; Apr: high 62°F, low 37°F, 4 in; May: high 72°F, low 49°F, 5.2 in; Jun: high 81°F, low 59°F, 4.7 in; Jul: high 83°F, low 62°F, 4 in; Aug: high 82°F, low 59°F, 3.8 in; Sep: high 76°F, low 52°F, 3.8 in; Oct: high 64°F, low 40°F, 2.8 in; Nov: high 49°F, low 28°F, 2.6 in; Dec: high 35°F, low 19°F, 2.1 in30°13°Jan1.835°16°Feb2.148°27°Mar2.662°37°Apr4.072°49°May5.281°59°Jun4.783°62°Jul4.082°59°Aug3.876°52°Sep3.864°40°Oct2.849°28°Nov2.635°19°Dec2.1Rain and melted snow, inches

Source: NOAA 1991–2020 climate normals, Altona, IL weather station (5 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 Oneida.

Nearest hospitals

  • St. Mary Medical CenterGeneral hospital · emergency room · CMS rating 2 of 5 · Galesburg9.2 miles
  • Osf Saint Luke Medical CenterCritical access hospital · emergency room · CMS rating 4 of 5 · Kewanee17.9 miles
  • Osf Holy Family Medical CenterCritical access hospital · emergency room · CMS rating 4 of 5 · Monmouth24.5 miles

Providers with an office here

Chiropractors1

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 Oneida

Libraries

  • Greig Memorial Library1.2 mi
  • Ransom Public Library4.5 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.

Schools in Oneida

Public schools here are run by R O W V A CUSD 208. Check each district’s attendance zones for a specific address.

Public schools (2)
SchoolGradesStudentsTypeDistance
R O W V A Elem SchoolOneidaPre-K–6369Public1.1 mi
R O W V A Jr and Sr High SchoolOneida7–12248Public1.1 mi

Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.

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Where Oneida is

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Towns near Oneida

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Shares ZIP codes with Wataga.

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.