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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/03875

03875

ZIP 03875 is Silver Lake, New Hampshire, in Carroll County; area code 603; Eastern time.

Type
Standard
Time zone
America/New_York
County
Carroll
Metro area
none
Population
1,005
Coordinates
43.9036, -71.1921
☼ Live from 03875 — Silver Lake, NH

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Local time: —

Where 03875 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 03875
  • 🔢 Type 03875 into a pocket calculator and turn it upside down: SLBEO — not quite a word, sorry.
  • ➕ As a number, 3,875 = 5 × 5 × 5 × 31. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111100100011
  • 🏠 Its numerical neighbours: 03874 (Seabrook, NH, 72 mi away) and 03878 (Somersworth, NH, 47 mi away).
  • 🔄 Backwards, 03875 becomes 57830, which is not a ZIP code at all.
  • 👥 51 other ZIP codes are made of exactly the same digits (03785, 03857, 05738, 05837, 05873, 07538, …). The farthest-flung twin is 85307 in Glendale, AZ, 2,303 miles away.
  • 🧭 Farther north than 87% of all ZIP codes, and farther east than 96%.
  • 🎯1,430 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03875 and you would come out at 43.90°S, 108.81°E — 910 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 28m of daylight. Shortest: 8h 54m.
  • 📏 At 16.4 square miles of land, 03875 is bigger than 34% of ZIP codes — room for about 12 Central Parks.
🌙 The sky over 03875 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,005This ZIP1,005
Households407This ZIP407
Housing units577This ZIP577
Median age54.5This ZIP54.5New Hampshire43.3US 38.9
Median household income$115,583This ZIP$115,583New Hampshire$99,031US $80,734
Median home value$371,100This ZIP$371,100New Hampshire$402,500US $332,700
Bachelor's degree or higher39.9%This ZIP39.9%
Mean commute25.5 minThis ZIP25.5 min
Population density61.4 / sq miThis ZIP61.4 / sq mi

Business and tax activity

Business establishments10This ZIP10
Employees53This ZIP53
Annual payroll$2,698,000This ZIP$2,698,000
Tax returns filed470This ZIP470
Total adjusted gross income$43,023,000This ZIP$43,023,000

Land area

Land area16.37 sq miThis ZIP16.37 sq mi
Water area1.78 sq miThis ZIP1.78 sq mi

ZIP codes near 03875

ZIPCityDistance
03817 Chocorua, NH 2.6 mi
03849 Madison, NH 3.1 mi
03818 Conway, NH 5.6 mi
03886 Tamworth, NH 5.9 mi
03890 West Ossipee, NH 6.2 mi
03897 Wonalancet, NH 6.8 mi
03832 Eaton Center, NH 7.2 mi
03836 Freedom, NH 7.2 mi
03883 South Tamworth, NH 9.1 mi
03814 Center Ossipee, NH 9.2 mi

Find every ZIP code within 10 miles of 03875 →

Questions about this ZIP code

Where is ZIP code 03875?

03875 is in Silver Lake, New Hampshire, in Carroll County. Its published point location is 43.9036, -71.1921.

What county is 03875 in?

03875 lies in Carroll County.

What area code is 03875?

Silver Lake uses area code 603, from NANPA's telephone records.

What time zone is 03875 in?

03875 uses America/New_York.

How many people live in 03875?

About 1,005 people live in ZIP code 03875, in 407 households, at 61.4 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 03875?

$115,583 a year, against $99,031 across New Hampshire.

What ZIP codes are near 03875?

The closest are 03817 (2.6 mi), 03849 (3.1 mi), 03818 (5.6 mi), 03886 (5.9 mi) and 03890 (6.2 mi).

Is 03875 a PO Box ZIP code?

03875 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03875 ZIP Code — Silver Lake, New Hampshire (Carroll County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03875

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