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zipcodes.pro — ZIP/03603

03603

ZIP 03603 is Charlestown, New Hampshire, in Sullivan County; area code 603; Eastern time.

Type
Standard
Time zone
America/New_York
County
Sullivan
Population
5,238
Coordinates
43.2479, -72.3737
☼ Live from 03603 — Charlestown, NH

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Local time: —

Where 03603 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 03603
  • 🔢 Type 03603 into a pocket calculator and turn it upside down: EOgEO — not quite a word, sorry.
  • ➕ As a number, 3,603 = 3 × 1201. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111000010011
  • 🏠 Its numerical neighbours: 03602 (Alstead, NH, 8 mi away) and 03604 (Drewsville, NH, 8 mi away).
  • 🔄 Backwards, 03603 becomes 30630 — and that is a real ZIP code: Crawford, GA, 868 miles away.
  • 👥 16 other ZIP codes are made of exactly the same digits (03036, 03063, 06033, 06330, 30036, 30063, …). The farthest-flung twin is 33060 in Pompano Beach, FL, 1,254 miles away.
  • 🧭 Farther north than 84% of all ZIP codes, and farther east than 94%.
  • 🎯1,370 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03603 and you would come out at 43.25°S, 107.63°E — 900 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 58m.
  • 📏 At 44.3 square miles of land, 03603 is bigger than 56% of ZIP codes — room for about 34 Central Parks.
🌙 The sky over 03603 today
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🌋 Shake report
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Source: USGS.

People and housing

Population5,238This ZIP5,238
Households1,726This ZIP1,726
Housing units2,036This ZIP2,036
Median age44.8This ZIP44.8New Hampshire43.3US 38.9
Median household income$56,731This ZIP$56,731New Hampshire$99,031US $80,734
Median home value$230,400This ZIP$230,400New Hampshire$402,500US $332,700
Median gross rent$1,096This ZIP$1,096New Hampshire$1,491US $1,413
Bachelor's degree or higher14.4%This ZIP14.4%
Mean commute23.7 minThis ZIP23.7 min
Population density118.4 / sq miThis ZIP118.4 / sq mi

Business and tax activity

Business establishments77This ZIP77
Employees1,840This ZIP1,840
Annual payroll$117,305,000This ZIP$117,305,000
Tax returns filed2,650This ZIP2,650
Total adjusted gross income$167,437,000This ZIP$167,437,000

Land area

Land area44.25 sq miThis ZIP44.25 sq mi
Water area2.28 sq miThis ZIP2.28 sq mi

Other place names in 03603

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

ZIP codes near 03603

ZIPCityDistance
03601 Acworth, NH 3.1 mi
05156 Springfield, VT 6.2 mi
03607 South Acworth, NH 6.6 mi
03602 Alstead, NH 7.5 mi
03604 Drewsville, NH 8.0 mi
03609 North Walpole, NH 8.1 mi
03743 Claremont, NH 8.1 mi
05101 Bellows Falls, VT 8.2 mi
03605 Lempster, NH 9.5 mi
05150 North Springfield, VT 10.0 mi

Find every ZIP code within 10 miles of 03603 →

Questions about this ZIP code

Where is ZIP code 03603?

03603 is in Charlestown, New Hampshire, in Sullivan County, part of the Lebanon-Claremont, NH-VT micropolitan area. Its published point location is 43.2479, -72.3737.

What county is 03603 in?

03603 lies in Sullivan County.

What area code is 03603?

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

What time zone is 03603 in?

03603 uses America/New_York.

How many people live in 03603?

About 5,238 people live in ZIP code 03603, in 1,726 households, at 118.4 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 03603?

$56,731 a year, against $99,031 across New Hampshire.

What ZIP codes are near 03603?

The closest are 03601 (3.1 mi), 05156 (6.2 mi), 03607 (6.6 mi), 03602 (7.5 mi) and 03604 (8 mi).

Is 03603 a PO Box ZIP code?

03603 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03603 ZIP Code — Charlestown, New Hampshire (Sullivan County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03603

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