Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/63034

63034

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

Type
Standard
Time zone
America/Chicago
County
St. Louis
Metro area
St. Louis, MO-IL
Population
18,908
Coordinates
38.8454, -90.2885
☼ Live from 63034 — Florissant, MO

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Where 63034 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 63034
  • 🔢 Type 63034 into a pocket calculator and turn it upside down: hEOEg — not quite a word, sorry.
  • ➕ As a number, 63,034 = 2 × 31517. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111011000111010
  • 🏠 Its numerical neighbours: 63033 (Florissant, MO, 3 mi away) and 63036 (French Village, MO, 60 mi away).
  • 🔄 Backwards, 63034 becomes 43036 — and that is a real ZIP code: Magnetic Springs, OH, 388 miles away.
  • 👥 29 other ZIP codes are made of exactly the same digits (04336, 04363, 06334, 30346, 30364, 30436, …). The farthest-flung twin is 34036 in APO AA, a military post office, 4,909 miles away.
  • 🧭 Farther south than 52% of all ZIP codes, and farther west than 57%.
  • 🎯448 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 63034 and you would come out at 38.85°S, 89.71°E — 1,203 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 26m.
  • 📏 At 18.7 square miles of land, 63034 is bigger than 36% of ZIP codes — room for about 14 Central Parks.
🌙 The sky over 63034 today
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🌋 Shake report
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Source: USGS.

People and housing

Population18,908This ZIP18,908
Households6,670This ZIP6,670
Housing units6,727This ZIP6,727
Median age41.9This ZIP41.9Missouri39.0US 38.9
Median household income$103,905This ZIP$103,905Missouri$70,702US $80,734
Median home value$239,300This ZIP$239,300Missouri$230,300US $332,700
Median gross rent$1,825This ZIP$1,825Missouri$1,033US $1,413
Bachelor's degree or higher40.8%This ZIP40.8%
Mean commute27.1 minThis ZIP27.1 min
Population density1,008.7 / sq miThis ZIP1,008.7 / sq mi

Business and tax activity

Business establishments176This ZIP176
Employees1,619This ZIP1,619
Annual payroll$55,221,000This ZIP$55,221,000
Tax returns filed9,360This ZIP9,360
Total adjusted gross income$672,606,000This ZIP$672,606,000

Land area

Land area18.75 sq miThis ZIP18.75 sq mi
Water area1.55 sq miThis ZIP1.55 sq mi

Other place names in 63034

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

ZIP codes near 63034

ZIPCityDistance
63033 Florissant, MO 3.3 mi
63386 West Alton, MO 4.1 mi
63031 Florissant, MO 4.2 mi
63138 Saint Louis, MO 6.0 mi
63135 Saint Louis, MO 6.5 mi
63042 Hazelwood, MO 6.6 mi
63136 Saint Louis, MO 7.1 mi
63140 Saint Louis, MO 7.6 mi
63137 Saint Louis, MO 7.8 mi
63373 Portage Des Sioux, MO 7.8 mi

Find every ZIP code within 10 miles of 63034 →

Questions about this ZIP code

Where is ZIP code 63034?

63034 is in Florissant, Missouri, in St. Louis County, part of the St. Louis, MO-IL metropolitan area. Its published point location is 38.8454, -90.2885.

What county is 63034 in?

63034 lies in St. Louis County.

What time zone is 63034 in?

63034 uses America/Chicago.

How many people live in 63034?

About 18,908 people live in ZIP code 63034, in 6,670 households, at 1,008.7 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 63034?

$103,905 a year, against $70,702 across Missouri.

What ZIP codes are near 63034?

The closest are 63033 (3.3 mi), 63386 (4.1 mi), 63031 (4.2 mi), 63138 (6 mi) and 63135 (6.5 mi).

Is 63034 a PO Box ZIP code?

63034 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “63034 ZIP Code — Florissant, Missouri (St. Louis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/63034

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