ZIP code · Saint Mary · Missouri · United States
ZIP code 63673 — Saint Mary
ZIP code 63673 serves Saint Mary, Missouri.
- Postal code
- 63673Single source Value from one source, not cross-checked.
- City
- Saint Mary
- County
- Ste. Genevieve FIPS 29186
- State
- Missouri
- Country
- United States
- Coordinates
- 37.8325, -89.9770 — precision precise (locality)
View on OpenStreetMap - Population
- 2,350 (ZCTA, ACS 5-year)
- Population density
- 20 / sq mi
- Land area
- 115.2 sq mi (298.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $75,000
- Per-capita income
- $34,897
- Median age
- 38.5
- Households
- 864
- Housing units
- 1,050
- Median home value
- $217,000
- Median gross rent
- $926 / month
- Congressional district
- MO-8 (119th Congress)
- USDA hardiness zone
- 6b (-5 to 0 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 573Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 63673 with another ZIP · ZIPs within 25 miles · distance from 63673
Map of ZIP code 63673
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 21°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 41 | 46 | 56 | 68 | 77 | 85 | 88 | 87 | 81 | 70 | 56 | 45 |
| Avg low °F | 21 | 25 | 33 | 42 | 53 | 62 | 66 | 64 | 55 | 43 | 33 | 25 |
| Precip in | 2.7 | 2.8 | 3.8 | 5.5 | 5.7 | 4.3 | 3.9 | 3.3 | 3.3 | 3.4 | 4.2 | 3.2 |
NOAA 1991–2020 climate normals from the nearest station: PERRYVILLE WTP (7.5 mi) · NOAA NCEI
Places in ZIP 63673
- 9 schools
- 1 post offices
- 3 places of worship
- 1 gas stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page