06420
ZIP 06420 is Salem, Connecticut, mostly in New London County; area codes 860 and 959; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- New London +1 more
- Metro area
- none
- Population
- 4,368
- Coordinates
- 41.4894, -72.2584
Weather right now
Asking the National Weather Service…
Where 06420 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.
- 🔢 Type 06420 into a pocket calculator and turn it upside down: OZhgO — not quite a word, sorry.
- ➕ As a number, 6,420 = 2 × 2 × 3 × 5 × 107. Its digits add up to 12, a total 940 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100010100 - 🏠 Its numerical neighbours: 06419 (Killingworth, CT, 18 mi away) and 06422 (Durham, CT, 22 mi away).
- 🔄 Backwards, 06420 becomes 02460 — and that is a real ZIP code: Newtonville, MA, 80 miles away.
- 👥 27 other ZIP codes are made of exactly the same digits (00624, 02460, 04062, 04260, 06024, 06042, …). The farthest-flung twin is 00624 in Penuelas, PR, 1,652 miles away.
- 🧭 Farther north than 71% of all ZIP codes, and farther east than 94%.
- 🎯1,379 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 06420 and you would come out at 41.49°S, 107.74°E — 797 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 11m of daylight. Shortest: 9h 10m.
- 📏 At 29.6 square miles of land, 06420 is bigger than 45% of ZIP codes — room for about 22 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 4,368This ZIP4,368 |
|---|---|
| Households | 1,811This ZIP1,811 |
| Housing units | 1,811This ZIP1,811 |
| Median age | 41.6This ZIP41.6Connecticut41.1US 38.9 |
| Median household income | $123,425This ZIP$123,425Connecticut$95,781US $80,734 |
| Median home value | $405,800This ZIP$405,800Connecticut$366,900US $332,700 |
| Median gross rent | $1,440This ZIP$1,440Connecticut$1,488US $1,413 |
| Bachelor's degree or higher | 50.5%This ZIP50.5% |
| Mean commute | 31.6 minThis ZIP31.6 min |
| Population density | 147.8 / sq miThis ZIP147.8 / sq mi |
Business and tax activity
| Business establishments | 73This ZIP73 |
|---|---|
| Employees | 504This ZIP504 |
| Annual payroll | $34,281,000This ZIP$34,281,000 |
| Tax returns filed | 2,200This ZIP2,200 |
| Total adjusted gross income | $239,560,000This ZIP$239,560,000 |
Land area
| Land area | 29.55 sq miThis ZIP29.55 sq mi |
|---|---|
| Water area | 0.84 sq miThis ZIP0.84 sq mi |
Counties 06420 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| New London County | 97.9% |
| Middlesex County | 2.1% |
ZIP codes near 06420
| ZIP | City | Distance |
|---|---|---|
06370 | Oakdale, CT | 3.9 mi |
06334 | Bozrah, CT | 5.8 mi |
06415 | Colchester, CT | 6.3 mi |
06353 | Montville, CT | 6.6 mi |
06336 | Gilman, CT | 7.1 mi |
06382 | Uncasville, CT | 7.2 mi |
06423 | East Haddam, CT | 7.2 mi |
06333 | East Lyme, CT | 7.3 mi |
06389 | Yantic, CT | 8.5 mi |
06439 | Hadlyme, CT | 8.9 mi |
Find every ZIP code within 10 miles of 06420 →
Questions about this ZIP code
Where is ZIP code 06420?
06420 is in Salem, Connecticut, in New London County. Its published point location is 41.4894, -72.2584.
What county is 06420 in?
06420 spans 2 counties: New London County and Middlesex County. Most of it falls in New London County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 06420?
Salem uses area codes 860 and 959, from NANPA's telephone records.
What time zone is 06420 in?
06420 uses America/New_York.
How many people live in 06420?
About 4,368 people live in ZIP code 06420, in 1,811 households, at 147.8 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 06420?
$123,425 a year, against $95,781 across Connecticut.
What ZIP codes are near 06420?
The closest are 06370 (3.9 mi), 06334 (5.8 mi), 06415 (6.3 mi), 06353 (6.6 mi) and 06336 (7.1 mi).
Is 06420 a PO Box ZIP code?
06420 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “06420 ZIP Code — Salem, Connecticut (New London County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/06420
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/06420.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.