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Where 04856 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 04856 into a pocket calculator and turn it upside down: gSBhO — not quite a word, sorry.
- ➕ As a number, 4,856 = 2 × 2 × 2 × 607. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1001011111000 - 🏠 Its numerical neighbours: 04855 (Port Clyde, ME, 19 mi away) and 04858 (South Thomaston, ME, 9 mi away).
- 🔄 Backwards, 04856 becomes 65840, which is not a ZIP code at all.
- 👥 66 other ZIP codes are made of exactly the same digits (04568, 04658, 04685, 04865, 05468, 05486, …). The farthest-flung twin is 86405 in Lake Havasu City, AZ, 2,473 miles away.
- 🧭 Farther north than 88% of all ZIP codes, and farther east than 97%.
- 🎯1,533 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 04856 and you would come out at 44.18°S, 110.88°E — 887 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 31m of daylight. Shortest: 8h 52m.
- 📏 At 21.6 square miles of land, 04856 is bigger than 39% of ZIP codes — room for about 16 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,675This ZIP3,675 |
|---|---|
| Households | 1,498This ZIP1,498 |
| Housing units | 2,018This ZIP2,018 |
| Median age | 48.7This ZIP48.7Maine44.8US 38.9 |
| Median household income | $86,979This ZIP$86,979Maine$74,733US $80,734 |
| Median home value | $469,000This ZIP$469,000Maine$296,600US $332,700 |
| Median gross rent | $1,194This ZIP$1,194Maine$1,139US $1,413 |
| Bachelor's degree or higher | 51.3%This ZIP51.3% |
| Mean commute | 11.3 minThis ZIP11.3 min |
| Population density | 169.8 / sq miThis ZIP169.8 / sq mi |
Business and tax activity
| Business establishments | 260This ZIP260 |
|---|---|
| Employees | 3,084This ZIP3,084 |
| Annual payroll | $204,890,000This ZIP$204,890,000 |
| Tax returns filed | 2,020This ZIP2,020 |
| Total adjusted gross income | $220,689,000This ZIP$220,689,000 |
Land area
| Land area | 21.64 sq miThis ZIP21.64 sq mi |
|---|---|
| Water area | 2.44 sq miThis ZIP2.44 sq mi |
ZIP codes near 04856
| ZIP | City | Distance |
|---|---|---|
04865 | West Rockport, ME | 0.8 mi |
04841 | Rockland, ME | 3.3 mi |
04843 | Camden, ME | 4.9 mi |
04847 | Hope, ME | 5.3 mi |
04861 | Thomaston, ME | 5.6 mi |
04864 | Warren, ME | 7.0 mi |
04850 | Lincolnville Center, ME | 8.1 mi |
04854 | Owls Head, ME | 9.4 mi |
04858 | South Thomaston, ME | 9.4 mi |
04862 | Union, ME | 9.6 mi |
Find every ZIP code within 10 miles of 04856 →
Questions about this ZIP code
Where is ZIP code 04856?
04856 is in Rockport, Maine, in Knox County. Its published point location is 44.1806, -69.1221.
What county is 04856 in?
04856 lies in Knox County.
What area code is 04856?
Rockport uses area code 207, from NANPA's telephone records.
What time zone is 04856 in?
04856 uses America/New_York.
How many people live in 04856?
About 3,675 people live in ZIP code 04856, in 1,498 households, at 169.8 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 04856?
$86,979 a year, against $74,733 across Maine.
What ZIP codes are near 04856?
The closest are 04865 (0.8 mi), 04841 (3.3 mi), 04843 (4.9 mi), 04847 (5.3 mi) and 04861 (5.6 mi).
Is 04856 a PO Box ZIP code?
04856 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “04856 ZIP Code — Rockport, Maine (Knox County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/04856
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/04856.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.