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zipcodes.pro — ZIP/63031

63031

ZIP 63031 is in Florissant, Missouri, in St. Louis County; Central time. Florissant has 4 ZIP codes; the others are 63032, 63033 and 63034.

Type
Standard
Time zone
America/Chicago
County
St. Louis
Metro area
St. Louis, MO-IL
Population
50,196
Coordinates
38.8120, -90.3536
☼ Live from 63031 — Florissant, MO

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Where 63031 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 63031
  • 🔢 Type 63031 into a pocket calculator and turn it upside down: IEOEg — not quite a word, sorry.
  • ➕ 63031 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111011000110111
  • 🏠 Its numerical neighbours: 63030 (Fletcher, MO, 51 mi away) and 63032 (Florissant, MO, 13 mi away).
  • 🔄 Backwards, 63031 becomes 13036 — and that is a real ZIP code: Central Square, NY, 800 miles away.
  • 👥 34 other ZIP codes are made of exactly the same digits (06133, 06331, 13036, 13063, 13360, 13603, …). The farthest-flung twin is 33160 in North Miami Beach, FL, 1,069 miles away.
  • 🧭 Farther south than 53% of all ZIP codes, and farther west than 57%.
  • 🎯445 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 63031 and you would come out at 38.81°S, 89.65°E — 1,202 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 53m of daylight. Shortest: 9h 27m.
  • 📏 At 15.1 square miles of land, 63031 is bigger than 33% of ZIP codes — room for about 11 Central Parks.
🌙 The sky over 63031 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population50,196This ZIP50,196
Households19,408This ZIP19,408
Housing units20,952This ZIP20,952
Median age38.0This ZIP38.0Missouri39.0US 38.9
Median household income$70,811This ZIP$70,811Missouri$70,702US $80,734
Median home value$154,300This ZIP$154,300Missouri$230,300US $332,700
Median gross rent$1,429This ZIP$1,429Missouri$1,033US $1,413
Bachelor's degree or higher28.6%This ZIP28.6%
Mean commute25.7 minThis ZIP25.7 min
Population density3,333.1 / sq miThis ZIP3,333.1 / sq mi

Business and tax activity

Business establishments707This ZIP707
Employees6,797This ZIP6,797
Annual payroll$246,574,000This ZIP$246,574,000
Tax returns filed22,630This ZIP22,630
Total adjusted gross income$1,242,350,000This ZIP$1,242,350,000

Land area

Land area15.06 sq miThis ZIP15.06 sq mi
Water area1.35 sq miThis ZIP1.35 sq mi

Other place names in 63031

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 63031

ZIPCityDistance
63042 Hazelwood, MO 2.5 mi
63034 Florissant, MO 4.2 mi
63033 Florissant, MO 4.4 mi
63044 Bridgeton, MO 4.9 mi
63134 Saint Louis, MO 5.0 mi
63135 Saint Louis, MO 5.1 mi
63140 Saint Louis, MO 5.3 mi
63074 Saint Ann, MO 6.2 mi
63045 Earth City, MO 6.6 mi
63301 Saint Charles, MO 6.7 mi

Find every ZIP code within 10 miles of 63031 →

Questions about this ZIP code

Where is ZIP code 63031?

63031 is in Florissant, Missouri, in St. Louis County, part of the St. Louis, MO-IL metropolitan area. Its published point location is 38.8120, -90.3536.

What county is 63031 in?

63031 lies in St. Louis County.

What time zone is 63031 in?

63031 uses America/Chicago.

How many people live in 63031?

About 50,196 people live in ZIP code 63031, in 19,408 households, at 3,333.1 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 63031?

$70,811 a year, against $70,702 across Missouri.

What ZIP codes are near 63031?

The closest are 63042 (2.5 mi), 63034 (4.2 mi), 63033 (4.4 mi), 63044 (4.9 mi) and 63134 (5 mi).

Is 63031 a PO Box ZIP code?

63031 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “63031 ZIP Code — Florissant, Missouri (St. Louis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/63031

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