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/63640

63640

ZIP 63640 is Farmington, Missouri, mostly in St. Francois County; area codes 573 and 235; Central time.

Type
Standard
Time zone
America/Chicago
County
St. Francois +1 more
Metro area
Farmington, MO
Population
29,263
Coordinates
37.7551, -90.3690
☼ Live from 63640 — Farmington, MO

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 63640 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 63640
  • 🔢 Type 63640 into a pocket calculator and turn it upside down: OhgEg — not quite a word, sorry.
  • ➕ As a number, 63,640 = 2 × 2 × 2 × 5 × 37 × 43. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111100010011000
  • 🏠 Its numerical neighbours: 63638 (Ellington, MO, 52 mi away) and 63645 (Fredericktown, MO, 15 mi away).
  • 🔄 Backwards, 63640 becomes 04636, which is not a ZIP code at all.
  • 👥 27 other ZIP codes are made of exactly the same digits (03466, 30646, 30664, 34606, 34660, 36046, …). The farthest-flung twin is 03466 in West Chesterfield, NH, 1,003 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 57%.
  • 🎯465 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 63640 and you would come out at 37.76°S, 89.63°E — 1,253 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 47m of daylight. Shortest: 9h 33m.
  • 📏 At 209.3 square miles of land, 63640 is bigger than 91% of ZIP codes — room for about 159 Central Parks.
🌙 The sky over 63640 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population29,263This ZIP29,263
Households10,364This ZIP10,364
Housing units11,373This ZIP11,373
Median age39.2This ZIP39.2Missouri39.0US 38.9
Median household income$61,913This ZIP$61,913Missouri$70,702US $80,734
Median home value$216,700This ZIP$216,700Missouri$230,300US $332,700
Median gross rent$857This ZIP$857Missouri$1,033US $1,413
Bachelor's degree or higher19.9%This ZIP19.9%
Mean commute21.5 minThis ZIP21.5 min
Population density139.8 / sq miThis ZIP139.8 / sq mi

Business and tax activity

Business establishments823This ZIP823
Employees11,951This ZIP11,951
Annual payroll$491,088,000This ZIP$491,088,000
Tax returns filed11,780This ZIP11,780
Total adjusted gross income$871,665,000This ZIP$871,665,000

Land area

Land area209.26 sq miThis ZIP209.26 sq mi
Water area0.86 sq miThis ZIP0.86 sq mi

Counties 63640 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
St. Francois County 66.1%
Ste. Genevieve County 33.9%

Other place names in 63640

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

ZIP codes near 63640

ZIPCityDistance
63651 Knob Lick, MO 5.5 mi
63637 Doe Run, MO 8.7 mi
63601 Park Hills, MO 10.6 mi
63653 Leadwood, MO 14.0 mi
63624 Bismarck, MO 14.5 mi
63645 Fredericktown, MO 14.8 mi
63670 Sainte Genevieve, MO 15.2 mi
63036 French Village, MO 15.3 mi
63628 Bonne Terre, MO 15.3 mi
63650 Ironton, MO 17.4 mi

Find every ZIP code within 10 miles of 63640 →

Questions about this ZIP code

Where is ZIP code 63640?

63640 is in Farmington, Missouri, in St. Francois County, part of the Farmington, MO micropolitan area. Its published point location is 37.7551, -90.3690.

What county is 63640 in?

63640 spans 2 counties: St. Francois County and Ste. Genevieve County. Most of it falls in St. Francois County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 63640?

Farmington uses area codes 573 and 235, from NANPA's telephone records.

What time zone is 63640 in?

63640 uses America/Chicago.

How many people live in 63640?

About 29,263 people live in ZIP code 63640, in 10,364 households, at 139.8 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 63640?

$61,913 a year, against $70,702 across Missouri.

What ZIP codes are near 63640?

The closest are 63651 (5.5 mi), 63637 (8.7 mi), 63601 (10.6 mi), 63653 (14 mi) and 63624 (14.5 mi).

Is 63640 a PO Box ZIP code?

63640 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “63640 ZIP Code — Farmington, Missouri (St. Francois County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/63640

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/63640.json

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