ZIP code · Florissant · Missouri · United States
ZIP code 63031 — Florissant
ZIP code 63031 serves Florissant, Missouri.
- Postal code
- 63031Single source Value from one source, not cross-checked.
- City
- Florissant
- County
- St. Louis FIPS 29189
- State
- Missouri
- Country
- United States
- Coordinates
- 38.8069, -90.3401 — precision precise (locality)
View on OpenStreetMap - Population
- 50,258 (ZCTA, ACS 5-year)
- Population density
- 3,338 / sq mi
- Land area
- 15.1 sq mi (39 km²) (ZCTA, ACS 5-year)
- Median household income
- $71,783
- Per-capita income
- $35,115
- Median age
- 38.1
- Households
- 19,431
- Housing units
- 21,159
- Median home value
- $144,500
- Median gross rent
- $1,351 / month
- Congressional district
- MO-1 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °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
- 816 (from the nearest rate centre)Telephone 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 63031 with another ZIP · ZIPs within 25 miles · distance from 63031
Map of ZIP code 63031
Climate — monthly normals
Warmest month Jul (avg high 90°F), coldest Jan (avg low 24°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 46 | 57 | 68 | 77 | 86 | 90 | 88 | 81 | 69 | 56 | 45 |
| Avg low °F | 24 | 28 | 37 | 47 | 58 | 67 | 71 | 69 | 61 | 49 | 37 | 29 |
| Precip in | 2.6 | 2.2 | 3.5 | 4.7 | 4.8 | 4.5 | 3.9 | 3.4 | 3.0 | 3.1 | 3.4 | 2.5 |
NOAA 1991–2020 climate normals from the nearest station: ST LOUIS LAMBERT INTL AP (4.2 mi) · NOAA NCEI
Places in ZIP 63031
- 19 schools
- 1 colleges & universities
- 2 hospitals & clinics
- 3 doctors & dentists
- 5 pharmacies
- 4 supermarkets
- 33 restaurants & cafés
- 1 bars & pubs
- 14 parks
- 8 playgrounds
- 3 gyms & sports centres
- 2 libraries
- 2 post offices
- 19 places of worship
- 5 banks
- 7 gas stations
- 1 EV charging stations
- 2 police & fire 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