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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/05851

05851

ZIP 05851 is Lyndonville, Vermont, in Caledonia County; area code 802; Eastern time.

Type
Standard
Time zone
America/New_York
County
Caledonia
Metro area
none
Population
6,024
Coordinates
44.5463, -72.0489
☼ Live from 05851 — Lyndonville, VT

Weather right now

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Local time: —

Where 05851 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 05851
  • 🔢 Type 05851 into a pocket calculator and turn it upside down: ISBSO — not quite a word, sorry.
  • ➕ 05851 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011011011011
  • 🏠 Its numerical neighbours: 05850 (Lyndon Center, VT, 1 mi away) and 05853 (Morgan, VT, 25 mi away).
  • 🔄 Backwards, 05851 becomes 15850, which is not a ZIP code at all.
  • 👥 28 other ZIP codes are made of exactly the same digits (01585, 05158, 08515, 08551, 15085, 18055, …). The farthest-flung twin is 85015 in Phoenix, AZ, 2,255 miles away.
  • 🧭 Farther north than 89% of all ZIP codes, and farther east than 95%.
  • 🎯1,390 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 05851 and you would come out at 44.55°S, 107.95°E — 969 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 33m of daylight. Shortest: 8h 49m.
  • 📏 At 81.8 square miles of land, 05851 is bigger than 73% of ZIP codes — room for about 62 Central Parks.
🌙 The sky over 05851 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population6,024This ZIP6,024
Households2,532This ZIP2,532
Housing units2,776This ZIP2,776
Median age48.6This ZIP48.6Vermont43.1US 38.9
Median household income$68,488This ZIP$68,488Vermont$81,203US $80,734
Median home value$227,200This ZIP$227,200Vermont$316,600US $332,700
Median gross rent$1,097This ZIP$1,097Vermont$1,234US $1,413
Bachelor's degree or higher31.3%This ZIP31.3%
Mean commute24.4 minThis ZIP24.4 min
Population density73.6 / sq miThis ZIP73.6 / sq mi

Business and tax activity

Business establishments183This ZIP183
Employees1,575This ZIP1,575
Annual payroll$63,221,000This ZIP$63,221,000
Tax returns filed2,740This ZIP2,740
Total adjusted gross income$157,761,000This ZIP$157,761,000

Land area

Land area81.82 sq miThis ZIP81.82 sq mi
Water area0.66 sq miThis ZIP0.66 sq mi

Other place names in 05851

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

ZIP codes near 05851

ZIPCityDistance
05850 Lyndon Center, VT 1.4 mi
05849 Lyndon, VT 5.9 mi
05863 Saint Johnsbury Center, VT 6.4 mi
05866 Sheffield, VT 7.2 mi
05832 East Burke, VT 8.1 mi
05867 Sutton, VT 8.2 mi
05828 Danville, VT 8.4 mi
05838 East Saint Johnsbury, VT 9.0 mi
05836 East Hardwick, VT 9.2 mi
05842 Greensboro Bend, VT 10.1 mi

Find every ZIP code within 10 miles of 05851 →

Questions about this ZIP code

Where is ZIP code 05851?

05851 is in Lyndonville, Vermont, in Caledonia County. Its published point location is 44.5463, -72.0489.

What county is 05851 in?

05851 lies in Caledonia County.

What area code is 05851?

Lyndonville uses area code 802, from NANPA's telephone records.

What time zone is 05851 in?

05851 uses America/New_York.

How many people live in 05851?

About 6,024 people live in ZIP code 05851, in 2,532 households, at 73.6 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 05851?

$68,488 a year, against $81,203 across Vermont.

What ZIP codes are near 05851?

The closest are 05850 (1.4 mi), 05849 (5.9 mi), 05863 (6.4 mi), 05866 (7.2 mi) and 05832 (8.1 mi).

Is 05851 a PO Box ZIP code?

05851 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “05851 ZIP Code — Lyndonville, Vermont (Caledonia County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/05851

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