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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/06320

06320

ZIP 06320 is New London, Connecticut, in New London County; area codes 860 and 959; Eastern time.

Type
Standard
Time zone
America/New_York
County
New London
Metro area
none
Population
27,703
Coordinates
41.3488, -72.1020
☼ Live from 06320 — New London, CT

Weather right now

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NEXRAD radar
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Local time: —

Where 06320 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 06320
  • 🔢 Type 06320 into a pocket calculator and turn it upside down: OZEgO — not quite a word, sorry.
  • ➕ As a number, 6,320 = 2 × 2 × 2 × 2 × 5 × 79. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100010110000
  • 🏠 Its numerical neighbours: 06282 (Woodstock Valley, CT, 41 mi away) and 06330 (Baltic, CT, 20 mi away).
  • 🔄 Backwards, 06320 becomes 02360 — and that is a real ZIP code: Plymouth, MA, 84 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (00623, 02360, 02630, 03062, 03260, 03602, …). The farthest-flung twin is 00623 in Cabo Rojo, PR, 1,634 miles away.
  • 🧭 Farther north than 70% of all ZIP codes, and farther east than 94%.
  • 🎯1,388 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 06320 and you would come out at 41.35°S, 107.90°E — 784 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 10m of daylight. Shortest: 9h 11m.
  • 📏 At 5.6 square miles of land, 06320 is bigger than 20% of ZIP codes — room for about 4.3 Central Parks.
🌙 The sky over 06320 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population27,703This ZIP27,703
Households11,808This ZIP11,808
Housing units12,751This ZIP12,751
Median age34.7This ZIP34.7Connecticut41.1US 38.9
Median household income$59,170This ZIP$59,170Connecticut$95,781US $80,734
Median home value$253,300This ZIP$253,300Connecticut$366,900US $332,700
Median gross rent$1,341This ZIP$1,341Connecticut$1,488US $1,413
Bachelor's degree or higher28.7%This ZIP28.7%
Mean commute19.2 minThis ZIP19.2 min
Population density4,920.6 / sq miThis ZIP4,920.6 / sq mi

Business and tax activity

Business establishments637This ZIP637
Employees8,970This ZIP8,970
Annual payroll$503,158,000This ZIP$503,158,000
Tax returns filed12,780This ZIP12,780
Total adjusted gross income$655,320,000This ZIP$655,320,000

Land area

Land area5.63 sq miThis ZIP5.63 sq mi
Water area1.85 sq miThis ZIP1.85 sq mi

Other place names in 06320

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

ZIP codes near 06320

ZIPCityDistance
06385 Waterford, CT 3.0 mi
06340 Groton, CT 3.2 mi
06349 Groton, CT 3.6 mi
06375 Quaker Hill, CT 4.1 mi
06335 Gales Ferry, CT 6.3 mi
06357 Niantic, CT 6.4 mi
06388 West Mystic, CT 6.5 mi
06355 Mystic, CT 6.8 mi
06333 East Lyme, CT 7.1 mi
06353 Montville, CT 7.6 mi

Find every ZIP code within 10 miles of 06320 →

Questions about this ZIP code

Where is ZIP code 06320?

06320 is in New London, Connecticut, in New London County. Its published point location is 41.3488, -72.1020.

What county is 06320 in?

06320 lies in New London County.

What area code is 06320?

New London uses area codes 860 and 959, from NANPA's telephone records.

What time zone is 06320 in?

06320 uses America/New_York.

How many people live in 06320?

About 27,703 people live in ZIP code 06320, in 11,808 households, at 4,920.6 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 06320?

$59,170 a year, against $95,781 across Connecticut.

What ZIP codes are near 06320?

The closest are 06385 (3 mi), 06340 (3.2 mi), 06349 (3.6 mi), 06375 (4.1 mi) and 06335 (6.3 mi).

Is 06320 a PO Box ZIP code?

06320 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “06320 ZIP Code — New London, Connecticut (New London County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/06320

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