Ontario township, Illinois
Ontario township profile, demographic data, and geographic information.
Ontario township is a geographic entity located in Knox County, Illinois. As of official census estimates, it has a reported population of 889. The land area covers 36.19 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population (2025 PEP Estimate) | 889 | — | 2025 / Census |
| Median Age | 34.4 yrs | ±15.1 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 351 | ±81 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 364 | ±82 |
| Occupied Housing Units | 351 | ±81 |
| Vacant Housing Units | 13 | ±13 |
| Median Home Value | $113,200 | ±$18,463 |
| Median Gross Rent | $828 | ±$243 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $72,375 | ±$12,478 |
| Per Capita Income | $30,354 | ±$10,219 |
| Poverty Rate | 2.5% | ±1.8% |
| Population Below Poverty Level | 26 | ±21 |
| Unemployment Rate | 1.1% | ±1.4% |
| Civilian Labor Force, Employed | 355 | ±86 |
| Broadband Internet Rate | 94.9% | ±6.3% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
TOWNSHIP OF ONTARIO
GUS Population: 896 (2024)
ID: 163039
|
Township | Official Local Government |
Contact: SUPERVISOR
1146 KNOX HWY 4, ALTONA IL 61414-1146
|
|
GUS Population: 48,716 (2024)
ID: 124845
|
County | Official County Government |
Contact: KNOX COUNTY TREASURER
200 S CHERRY ST, GALESBURG IL 61401-4912
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 06-12 | Woodhull, IL | |
| Regular School Nearby | PK-05 | Alpha, IL | |
| Regular School Nearby | PK-KG | Galesburg, IL | |
| Regular School Nearby | PK-05 | Cambridge, IL | |
| Regular School Nearby | 06-12 | Cambridge, IL | |
| Career and Technical School Nearby | 11-12 | Galesburg, IL | |
| Regular School Nearby | 07-08 | Galesburg, IL | |
| Regular School Nearby | 09-12 | Galesburg, IL | |
| Regular School Nearby | PK-06 | Galva, IL | |
| Regular School Nearby | 07-12 | Galva, IL |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Carl Sandburg College
|
College | 11.4 mi away | 2400 Tom L. Wilson Boulevard, Galesburg, IL, 61401 |
3093442518
|
|
GREIG MEMORIAL LIBRARY
|
Library | 3.4 mi away | 110 SOUTH JOY STREET, ONEIDA, IL, 61467 |
(309) 483-3482
|
|
Knox College
|
College | 12.7 mi away | 2 E South St, Galesburg, IL, 61401 |
3093417000
|
|
RANSOM MEMORIAL PUBLIC LIBRARY
|
Library | 5.4 mi away | 110 EAST MAIN STREET, ALTONA, IL, 61414 |
(309) 484-6193
|
|
Monmouth College
|
College | 23.5 mi away | 700 E Broadway, Monmouth, IL, 61462-1998 |
3094572311
|
|
CLOVER PUBLIC LIBRARY DISTRICT
|
Library | 5.6 mi away | 440 NORTH DIVISION STREET, WOODHULL, IL, 61490 |
(309) 334-2680
|
|
VICTORIA PUBLIC LIBRARY DISTRICT
|
Library | 10.2 mi away | 227 EAST MAIN STREET, VICTORIA, IL, 61485 |
(309) 879-2295
|
|
NEW WINDSOR PUBLIC LIBRARY DISTRICT
|
Library | 11.2 mi away | 412 MAIN STREET, NEW WINDSOR, IL, 61465 |
(309) 667-2515
|
|
GALVA PUBLIC LIBRARY DISTRICT
|
Library | 12.2 mi away | 120 NORTHWEST THIRD AVENUE, GALVA, IL, 61434 |
(309) 932-2180
|
|
GALESBURG PUBLIC LIBRARY
|
Library | 12.4 mi away | 40 EAST SIMMONS STREET, GALESBURG, IL, 61401 |
(309) 343-6118
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at ALTONA, IL US, located 5.4 miles from Ontario township. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 29.9° | 13.0° | 21.4° | 1.82" | — |
| February | 35.3° | 15.8° | 25.5° | 2.07" | — |
| March | 48.1° | 26.5° | 37.3° | 2.58" | — |
| April | 61.5° | 36.9° | 49.2° | 4.00" | — |
| May | 72.0° | 49.2° | 60.6° | 5.21" | — |
| June | 80.5° | 58.9° | 69.7° | 4.72" | — |
| July | 83.4° | 61.8° | 72.6° | 3.98" | — |
| August | 81.9° | 59.3° | 70.6° | 3.76" | — |
| September | 76.3° | 51.6° | 64.0° | 3.81" | — |
| October | 63.9° | 39.8° | 51.9° | 2.77" | — |
| November | 48.5° | 28.1° | 38.3° | 2.56" | — |
| December | 35.4° | 18.7° | 27.1° | 2.10" | — |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Oneida city | City | 3.3 mi | — |
| Altona village | Village | 5.3 mi | — |
| Wataga village | Village | 5.7 mi | — |
| Woodhull village | Village | 5.7 mi | — |
| Nekoma CDP | CDP | 5.9 mi | — |
| Rio village | Village | 6.9 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 1709556172. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.