St. Mary township, Illinois
St. Mary township profile, demographic data, and geographic information.
St. Mary township is a geographic entity located in Hancock County, Illinois. As of official census estimates, it has a reported population of 532. The land area covers 36.98 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population (2025 PEP Estimate) | 532 | — | 2025 / Census |
| Median Age | 54.4 yrs | ±6.1 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 298 | ±56 | 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 | 317 | ±60 |
| Occupied Housing Units | 298 | ±56 |
| Vacant Housing Units | 19 | ±18 |
| Median Home Value | $65,200 | ±$10,492 |
| Median Gross Rent | $769 | ±$123 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $56,429 | ±$9,368 |
| Per Capita Income | $32,893 | ±$6,550 |
| Poverty Rate | 16.9% | ±7.6% |
| Population Below Poverty Level | 109 | ±55 |
| Unemployment Rate | 9.4% | ±8% |
| Civilian Labor Force, Employed | 289 | ±90 |
| Broadband Internet Rate | 74.5% | ±9.8% |
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 ST MARY
GUS Population: 543 (2024)
ID: 162946
|
Township | Official Local Government |
Contact: SUPERVISOR
733 N COUNTY ROAD 2800, PLYMOUTH IL 62367
|
|
COUNTY OF HANCOCK
GUS Population: 17,008 (2024)
ID: 184898
|
County | Official County Government |
Contact: COUNTY BOARD CHAIR
PO BOX 500, CARTHAGE IL 62321
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 05-08 | Carthage, IL | |
| Regular School Nearby | PK-04 | Carthage, IL | |
| Regular School Nearby | 09-12 | Carthage, IL | |
| Alternative School Nearby | 06-12 | Carthage, IL | |
| Alternative School Nearby | 06-12 | Carthage, IL | |
| Regular School Nearby | PK-06 | Bowen, IL | |
| Regular School Nearby | 07-12 | Augusta, IL | |
| Special Education School Nearby | M | Carthage, IL | |
| Special Education School Nearby | M | Colchester, IL | |
| Regular School Nearby | 07-08 | Colchester, 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 |
|---|---|---|---|---|
|
Western Illinois University
|
College | 17.7 mi away | 1 University Circle, Macomb, IL, 61455 |
3092981414
|
|
PLYMOUTH BRANCH LIBRARY
|
Library | 3.5 mi away | 103 WEST MAIN STREET, PLYMOUTH, IL, 62367 |
(309) 458-6616
|
|
GREATER WEST CENTRAL PUBLIC LIBRARY DISTRICT
|
Library | 6.7 mi away | 202 NORTH CENTER STREET, AUGUSTA, IL, 62311 |
(217) 392-2211
|
|
BOWEN BRANCH LIBRARY
|
Library | 8.3 mi away | 116 EAST FIFTH STREET, BOWEN, IL, 62316 |
(217) 842-5573
|
|
CARTHAGE PUBLIC LIBRARY DISTRICT
|
Library | 10.6 mi away | 500 WABASH AVENUE, CARTHAGE, IL, 62321 |
(217) 357-3232
|
|
COLCHESTER DISTRICT LIBRARY
|
Library | 11.5 mi away | 203 MACOMB STREET, COLCHESTER, IL, 62326 |
(309) 776-4861
|
|
GOLDEN BRANCH LIBRARY
|
Library | 15.2 mi away | 309 QUINCY STREET, GOLDEN, IL, 62339 |
(217) 696-2428
|
|
BLANDINSVILLE-HIRE LIBRARY DISTRICT
|
Library | 16.7 mi away | 130 SOUTH MAIN STREET, BLANDINSVILLE, IL, 61420 |
(309) 652-3166
|
|
LAHARPE CARNEGIE PUBLIC LIBRARY DISTRICT
|
Library | 17.7 mi away | 209 EAST MAIN STREET, LA HARPE, IL, 61450 |
(217) 659-7729
|
|
MACOMB PUBLIC LIBRARY DISTRICT
|
Library | 18.0 mi away | 235 SOUTH LAFAYETTE STREET, MACOMB, IL, 61455 |
(309) 833-2714
|
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 BENTLEY, IL US, located 7.7 miles from St. Mary township. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 33.9° | 17.7° | 25.8° | 1.67" | 7.6" |
| February | 38.9° | 21.7° | 30.3° | 1.98" | 6.3" |
| March | 50.9° | 31.9° | 41.4° | 2.57" | 2.1" |
| April | 63.4° | 42.1° | 52.8° | 4.11" | 0.4" |
| May | 73.7° | 53.4° | 63.6° | 5.28" | 0.0" |
| June | 83.0° | 63.2° | 73.1° | 4.85" | 0.0" |
| July | 86.3° | 66.5° | 76.4° | 4.29" | 0.0" |
| August | 84.9° | 63.8° | 74.3° | 4.19" | 0.0" |
| September | 78.8° | 55.5° | 67.2° | 3.67" | 0.0" |
| October | 66.0° | 44.1° | 55.1° | 3.16" | 0.1" |
| November | 51.3° | 32.8° | 42.0° | 2.45" | 1.4" |
| December | 39.1° | 23.6° | 31.3° | 1.89" | 5.2" |
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 |
|---|---|---|---|
| Plymouth village | Village | 3.6 mi | — |
| Augusta village | Village | 6.7 mi | — |
| Bentley town | Town | 7.7 mi | — |
| Bowen village | Village | 8.3 mi | — |
| Tennessee village | Village | 9.0 mi | — |
| Carthage city | City | 10.4 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 1706767054. • 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.