Saint Mary, Illinois
Saint Mary: township in Hancock County, Illinois
About
Saint Mary is a township located in the county of Hancock in the U.S. state of Illinois. Its population at the 2010 census was 640 and a population density of 17 people per km². After 10 years in 2020 city had an estimated population of 585 inhabitants.
The township was created 176 years ago in 1849.
Quick Facts about Saint Mary
| Population | 585 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| County | Hancock County |
| Area | 36.93 km2 |
| Latitude & Longitude | 40.3462,-90.9340 |
| Altitude | 538 feet / 164 meters |
| Establishment | November 06, 1849 (176 years ago) |
| Time Zone | America/Chicago |
| Local time | 21:33:10 (18th April 2026) |
| Density | 16 Pop. per km² as of 2020 |
| Population growth | -9.4% (2010-2020) |
| Weather | 55℉ Rain Showers Likely 7-days weather |
Geography
Saint Mary is located at 40°20'46"N 90°56'2"W (40.3461600, -90.9340200).
Saint Mary map
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Weather
Rain showers likely. Mostly sunny, with a high near 55. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch pos...
7-Day ForecastDemographics
According to census records, the population of Saint Mary decreased by 9.4% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 640 | - | census |
| 2011 | 636 | -0.63% | estimation process |
| 2012 | 631 | -0.79% | estimation process |
| 2013 | 622 | -1.45% | estimation process |
| 2014 | 615 | -1.14% | estimation process |
| 2015 | 611 | -0.65% | estimation process |
| 2016 | 611 | 0% | estimation process |
| 2017 | 603 | -1.33% | estimation process |
| 2018 | 598 | -0.84% | estimation process |
| 2019 | 594 | -0.67% | estimation process |
| 2020 | 585 | -1.54% | estimation process |
Nearby Schools and Colleges
Schools and campuses linked to Saint Mary, IL. Select a name to open its map and contact details.
| Code | Name | City | ZIP |
|---|---|---|---|
| 149772 | Western Illinois University | Macomb (IL) | 61455 |
Nearby Transit Stations (7)
Rail and bus stations connected to Saint Mary, IL. Select a station to open its map and address details.
| Code | Name | Address | Type |
|---|---|---|---|
| MAC | Macomb | 120 East Calhoun Street | RAIL |
| FMD | Fort Madison station | 1601 20th Street | RAIL |
| BRL | Burlington | 300 South Main Street | RAIL |
| QCY | Quincy | North 30th St. and Wisman Lane | RAIL |
| GBB | Galesburg station | 225 South Seminary Street | RAIL |
Closest post offices linked to Saint Mary.
| Post Office Name | City | ZIP |
|---|---|---|
| Plymouth Post Office | Plymouth (IL) | 62367 |
Other places with the same name (3)
- Saint Mary, Minnesota township in Waseca County, Minnesota with a population of 458 people.
- Saint Mary, Missouri city in Missouri, United States with a population of 345 people.
- Saint Mary, Kentucky human settlement in United States of America with a population of 134 people.
Other cities in Hancock County
Cities, towns, neighborhoods & other populated places in Hancock County , IL. (more)
| City Name | Population | Title |
|---|---|---|
| Carthage | 2,419 | City in and county seat of Hancock County, Illinois, United States |
| Warsaw | 1,456 | City in Illinois, United States |
| La Harpe | 1,123 | City in Hancock County, Illinois, United States |
| Nauvoo | 1,044 | City and historic district in Hancock County, Illinois, United States |
| Dallas City | 859 | Township in Hancock County, Illinois |
| Chili | 597 | Unincorporated community in Illinois |
| Augusta | 534 | Human settlement in Hancock County, Illinois, United States of America |
| Plymouth | 459 | Village in the United States |
| Bowen | 450 | Human settlement in Illinois, United States of America |
| Denver | 390 | Human settlement in Illinois, United States of America |
| Fountain Green | 262 | Township in Hancock County, Illinois |
| Durham | 251 | Unincorporated community in Illinois |
| Hamilton | 189 | City in Hancock County, Illinois, United States |
| Elvaston | 152 | Human settlement in Hancock County, Illinois, United States of America |
| Ferris | 143 | Village in Hancock County, Illinois, United States |
| Pontoosuc | 132 | Township in Hancock County, Illinois |