| Official Name: | St. Marys Township, Missouri |
| Settlement Type: | Civil Township |
| Coordinates: | 37.6733°N -90.0277°W |
| Coordinates Footnotes: | [1] |
| Mapsize: | 250x200px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Perry |
| Area Water Km2: | 0.7 |
| Area Total Sq Mi: | 103 |
| Area Land Sq Mi: | 102 |
| Blank Name: | GNIS Feature ID |
St. Marys is one of the eight townships located in Perry County, Missouri, in the United States of America.
Saint Mary's Township was most likely given the name by Catholic members of the community who worshiped at St. Mary's-of-the-Barrens Church.[2] The name St. Mary's may be further connected to Catholic Kentucky settlers who originated in St. Mary's County, Maryland.[3]
St. Mary's Township lies in the southwestern part of Ste Genevieve County, and was organized between 1850 and 1860.
St. Mary's is situated in the southwestern corner of Perry County. There are three unincorporated communities in St. Mary's Township: Barks, Silver Lake and Yount.[4] [5]
As of the census of 2000, there were 1,681 people living in the township. The racial makeup of the town was 98.6% White, 0.4% American Indian and Alaska Native, and 0.5% from other races.[6]
As of the census of 2010, there were 1,708 people, with a density of 16.7 per square mile (6.5 km2), residing in the township. The population density was 25 people per square mile. The racial makeup of the town was 98.24% White, 0.53% American Indian and Alaska Native, and 0.88% from other races.[7]