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/63012

63012

ZIP 63012 is Barnhart, Missouri, in Jefferson County; area code 636; Central time.

Type
Standard
Time zone
America/Chicago
County
Jefferson
Metro area
St. Louis, MO-IL
Population
10,314
Coordinates
38.3474, -90.4535
☼ Live from 63012 — Barnhart, MO

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 63012 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 63012
  • 🔢 Type 63012 into a pocket calculator and turn it upside down: ZIOEg — not quite a word, sorry.
  • ➕ As a number, 63,012 = 2 × 2 × 3 × 59 × 89. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111011000100100
  • 🏠 Its numerical neighbours: 63011 (Ballwin, MO, 19 mi away) and 63013 (Beaufort, MO, 38 mi away).
  • 🔄 Backwards, 63012 becomes 21036 — and that is a real ZIP code: Dayton, MD, 726 miles away.
  • 👥 62 other ZIP codes are made of exactly the same digits (01236, 01263, 02136, 02163, 02361, 02631, …). The farthest-flung twin is 02631 in Brewster, MA, 1,101 miles away.
  • 🧭 Farther south than 56% of all ZIP codes, and farther west than 57%.
  • 🎯447 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 63012 and you would come out at 38.35°S, 89.55°E — 1,221 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 50m of daylight. Shortest: 9h 29m.
  • 📏 At 25.1 square miles of land, 63012 is bigger than 42% of ZIP codes — room for about 19 Central Parks.
🌙 The sky over 63012 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population10,314This ZIP10,314
Households3,857This ZIP3,857
Housing units4,076This ZIP4,076
Median age38.7This ZIP38.7Missouri39.0US 38.9
Median household income$96,099This ZIP$96,099Missouri$70,702US $80,734
Median home value$250,800This ZIP$250,800Missouri$230,300US $332,700
Median gross rent$1,441This ZIP$1,441Missouri$1,033US $1,413
Bachelor's degree or higher26.2%This ZIP26.2%
Mean commute30.8 minThis ZIP30.8 min
Population density410.3 / sq miThis ZIP410.3 / sq mi

Business and tax activity

Business establishments133This ZIP133
Employees857This ZIP857
Annual payroll$43,446,000This ZIP$43,446,000
Tax returns filed5,180This ZIP5,180
Total adjusted gross income$390,502,000This ZIP$390,502,000

Land area

Land area25.14 sq miThis ZIP25.14 sq mi
Water area0.16 sq miThis ZIP0.16 sq mi

Other place names in 63012

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

ZIP codes near 63012

ZIPCityDistance
63057 Liguori, MO 2.5 mi
63052 Imperial, MO 3.4 mi
63070 Pevely, MO 4.5 mi
63053 Kimmswick, MO 5.0 mi
63010 Arnold, MO 6.6 mi
63048 Herculaneum, MO 6.9 mi
63051 House Springs, MO 7.0 mi
63065 Mapaville, MO 7.0 mi
63019 Crystal City, MO 9.1 mi
63050 Hillsboro, MO 9.2 mi

Find every ZIP code within 10 miles of 63012 →

Questions about this ZIP code

Where is ZIP code 63012?

63012 is in Barnhart, Missouri, in Jefferson County, part of the St. Louis, MO-IL metropolitan area. Its published point location is 38.3474, -90.4535.

What county is 63012 in?

63012 lies in Jefferson County.

What area code is 63012?

Barnhart uses area code 636, from NANPA's telephone records.

What time zone is 63012 in?

63012 uses America/Chicago.

How many people live in 63012?

About 10,314 people live in ZIP code 63012, in 3,857 households, at 410.3 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 63012?

$96,099 a year, against $70,702 across Missouri.

What ZIP codes are near 63012?

The closest are 63057 (2.5 mi), 63052 (3.4 mi), 63070 (4.5 mi), 63053 (5 mi) and 63010 (6.6 mi).

Is 63012 a PO Box ZIP code?

63012 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “63012 ZIP Code — Barnhart, Missouri (Jefferson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/63012

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/63012.json

Underlying data is public domain or openly licensed — sources, vintages and licences.