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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/01951

01951

ZIP 01951 is Newbury, Massachusetts, in Essex County; area codes 978 and 351; Eastern time.

Type
Standard
Time zone
America/New_York
County
Essex
Population
3,327
Coordinates
42.7734, -70.8502
☼ Live from 01951 — Newbury, MA

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Local time: —

Where 01951 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 01951
  • 🔢 Type 01951 into a pocket calculator and turn it upside down: ISGIO — not quite a word, sorry.
  • ➕ 01951 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11110011111
  • 🏠 Its numerical neighbours: 01950 (Newburyport, MA, 3 mi away) and 01952 (Salisbury, MA, 5 mi away).
  • 🔄 Backwards, 01951 becomes 15910, which is not a ZIP code at all.
  • 👥 28 other ZIP codes are made of exactly the same digits (01519, 01915, 10159, 10519, 10591, 10915, …). The farthest-flung twin is 95011 in Campbell, CA, 2,689 miles away.
  • 🧭 Farther north than 81% of all ZIP codes, and farther east than 96%.
  • 🎯1,447 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01951 and you would come out at 42.77°S, 109.15°E — 833 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 20m of daylight. Shortest: 9h 02m.
  • 📏 At 14.3 square miles of land, 01951 is bigger than 32% of ZIP codes — room for about 11 Central Parks.
🌙 The sky over 01951 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population3,327This ZIP3,327
Households1,479This ZIP1,479
Housing units1,874This ZIP1,874
Median age60.2This ZIP60.2Massachusetts40.0US 38.9
Median household income$182,684This ZIP$182,684Massachusetts$103,960US $80,734
Median home value$854,700This ZIP$854,700Massachusetts$562,100US $332,700
Median gross rent$1,856This ZIP$1,856Massachusetts$1,762US $1,413
Bachelor's degree or higher64.9%This ZIP64.9%
Mean commute24.7 minThis ZIP24.7 min
Population density232.6 / sq miThis ZIP232.6 / sq mi

Business and tax activity

Business establishments90This ZIP90
Employees480This ZIP480
Annual payroll$25,924,000This ZIP$25,924,000
Tax returns filed2,000This ZIP2,000
Total adjusted gross income$363,366,000This ZIP$363,366,000

Land area

Land area14.31 sq miThis ZIP14.31 sq mi
Water area2.65 sq miThis ZIP2.65 sq mi

ZIP codes near 01951

ZIPCityDistance
01950 Newburyport, MA 3.4 mi
01922 Byfield, MA 3.4 mi
01969 Rowley, MA 4.0 mi
01952 Salisbury, MA 5.0 mi
01938 Ipswich, MA 6.0 mi
01985 West Newbury, MA 6.1 mi
01833 Georgetown, MA 7.5 mi
01913 Amesbury, MA 7.6 mi
03874 Seabrook, NH 7.6 mi
01834 Groveland, MA 8.5 mi

Find every ZIP code within 10 miles of 01951 →

Questions about this ZIP code

Where is ZIP code 01951?

01951 is in Newbury, Massachusetts, in Essex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.7734, -70.8502.

What county is 01951 in?

01951 lies in Essex County.

What area code is 01951?

Newbury uses area codes 978 and 351, from NANPA's telephone records.

What time zone is 01951 in?

01951 uses America/New_York.

How many people live in 01951?

About 3,327 people live in ZIP code 01951, in 1,479 households, at 232.6 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 01951?

$182,684 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01951?

The closest are 01950 (3.4 mi), 01922 (3.4 mi), 01969 (4 mi), 01952 (5 mi) and 01938 (6 mi).

Is 01951 a PO Box ZIP code?

01951 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “01951 ZIP Code — Newbury, Massachusetts (Essex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01951

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