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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/23405

23405

ZIP 23405 is Machipongo, Virginia, in Northampton County; area codes 757 and 948; Eastern time.

Type
Standard
Time zone
America/New_York
County
Northampton
Metro area
none
Population
1,237
Coordinates
37.4117, -75.9266
☼ Live from 23405 — Machipongo, VA

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Local time: —

Where 23405 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 23405
  • 🔢 Type 23405 into a pocket calculator and turn it upside down: SOhEZ — not quite a word, sorry.
  • ➕ As a number, 23,405 = 5 × 31 × 151. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101101101101101
  • 🏠 Its numerical neighbours: 23404 (Locustville, VA, 22 mi away) and 23407 (Mappsville, VA, 36 mi away).
  • 🔄 Backwards, 23405 becomes 50432 — and that is a real ZIP code: Crystal Lake, IA, 1,021 miles away.
  • 👥 68 other ZIP codes are made of exactly the same digits (02345, 02453, 02534, 02543, 03245, 03254, …). The farthest-flung twin is 50432 in Crystal Lake, IA, 1,021 miles away.
  • 🧭 Farther south than 62% of all ZIP codes, and farther east than 85%.
  • 🎯1,231 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 23405 and you would come out at 37.41°S, 104.07°E — 768 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 45m of daylight. Shortest: 9h 35m.
  • 📏 At 25.7 square miles of land, 23405 is bigger than 42% of ZIP codes — room for about 20 Central Parks.
🌙 The sky over 23405 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,237This ZIP1,237
Households573This ZIP573
Housing units676This ZIP676
Median age43.9This ZIP43.9Virginia39.0US 38.9
Median household income$59,663This ZIP$59,663Virginia$93,170US $80,734
Median home value$341,800This ZIP$341,800Virginia$383,700US $332,700
Bachelor's degree or higher37.6%This ZIP37.6%
Mean commute49.3 minThis ZIP49.3 min
Population density48.2 / sq miThis ZIP48.2 / sq mi

Business and tax activity

Business establishments18This ZIP18
Employees123This ZIP123
Annual payroll$5,566,000This ZIP$5,566,000
Tax returns filed470This ZIP470
Total adjusted gross income$40,151,000This ZIP$40,151,000

Land area

Land area25.69 sq miThis ZIP25.69 sq mi
Water area7.41 sq miThis ZIP7.41 sq mi

ZIP codes near 23405

ZIPCityDistance
23307 Birdsnest, VA 3.4 mi
23347 Eastville, VA 4.7 mi
23354 Franktown, VA 4.8 mi
23408 Marionville, VA 5.4 mi
23413 Nassawadox, VA 5.5 mi
23419 Oyster, VA 7.2 mi
23398 Jamesville, VA 7.6 mi
23350 Exmore, VA 7.8 mi
23316 Cheriton, VA 8.4 mi
23482 Wardtown, VA 8.9 mi

Find every ZIP code within 10 miles of 23405 →

Questions about this ZIP code

Where is ZIP code 23405?

23405 is in Machipongo, Virginia, in Northampton County. Its published point location is 37.4117, -75.9266.

What county is 23405 in?

23405 lies in Northampton County.

What area code is 23405?

Machipongo uses area codes 757 and 948, from NANPA's telephone records.

What time zone is 23405 in?

23405 uses America/New_York.

How many people live in 23405?

About 1,237 people live in ZIP code 23405, in 573 households, at 48.2 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 23405?

$59,663 a year, against $93,170 across Virginia.

What ZIP codes are near 23405?

The closest are 23307 (3.4 mi), 23347 (4.7 mi), 23354 (4.8 mi), 23408 (5.4 mi) and 23413 (5.5 mi).

Is 23405 a PO Box ZIP code?

23405 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “23405 ZIP Code — Machipongo, Virginia (Northampton County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/23405

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