Saint Mary, Missouri

Saint Mary: city in Missouri, United States

About

Saint Mary is a city located in the county of Sainte Genevieve in the U.S. state of Missouri. Its population at the 2010 census was 360 and a population density of 228 people per km². After 10 years in 2020 city had an estimated population of 345 inhabitants.

Quick Facts about Saint Mary

Population 345 (2020)
Country United States of America
State Missouri (United States)
County Sainte Genevieve County
Phone Area Codes 573
Area 1.58 km2
Latitude & Longitude 37.8789,-89.9493
Altitude 384 feet / 117 meters
Time Zone America/Chicago
Local time 21:43:44 (17th April 2026)
Postal code 63673
Density 219 Pop. per km² as of 2020
Population growth -4.35% (2010-2020)
Weather 85℉ Mostly Sunny then Chance Showers And Thunderstorms 7-days weather

Geography

Saint Mary is located at 37°52'44"N 89°56'57"W (37.8789400, -89.9492800).

Saint Mary map

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Weather

85°F
Mostly Sunny then Chance Showers And Thunderstorms
6 to 16 mph S Today

A chance of showers and thunderstorms between 2pm and 5pm. Mostly sunny. High near 85, with temperatures falling to around 83 in the afternoon. South...

7-Day Forecast

Demographics

According to census records, the population of Saint Mary decreased by 4.35% in 10 years.

Year Population % Change Method
2010 360 - census
2011 363 0.83% estimation process
2012 354 -2.54% estimation process
2013 354 0% estimation process
2014 353 -0.28% estimation process
2015 348 -1.44% estimation process
2016 349 0.29% estimation process
2017 347 -0.58% estimation process
2018 349 0.57% estimation process
2019 346 -0.87% estimation process
2020 345 -0.29% estimation process
Saint Mary zip code is 63673. County name: Ste. Genevieve, County fips: 29186
Camp Rowdy, Iron Mountain City, Saint Marys, Saint Marys Landing, Yankeetown

Nearby Schools and Colleges

Schools and campuses linked to Saint Mary, MO. Select a name to open its map and contact details.

Code Name City ZIP
417442 Career Center of Southern Illinois Red Bud (IL) 62278
178217 Mineral Area College Park Hills (MO) 63601-1000
483911 Creative Touch Cosmetology School Waterloo (IL) 62298-1609

Nearby Transit Stations (9)

Rail and bus stations connected to Saint Mary, MO. Select a station to open its map and address details.

Code Name Address Type
DQN Du Quoin 20 North Chestnut St. RAIL
CDL Carbondale station 401 South Illinois St. RAIL
STL Gateway Transportation Center 551 South 16th St. RAIL
KWD Kirkwood 110 West Argonne Dr. RAIL
MAI Marion, IL 2100 West Main Street BUS

Other places with the same name (3)

Other cities in Sainte Genevieve County

Cities, towns, neighborhoods & other populated places in Sainte Genevieve County , MO.

City Name Population Title
Sainte Genevieve 4,410 City in and the county seat of Ste.
Bloomsdale 562 City in Sainte Genevieve County, Missouri, United States