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Where 04478 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 04478 into a pocket calculator and turn it upside down: BLhhO — not quite a word, sorry.
- ➕ As a number, 4,478 = 2 × 2239. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1000101111110 - 🏠 Its numerical neighbours: 04476 (Penobscot, ME, 100 mi away) and 04479 (Sangerville, ME, 48 mi away).
- 🔄 Backwards, 04478 becomes 87440, which is not a ZIP code at all.
- 👥 31 other ZIP codes are made of exactly the same digits (04487, 04847, 07844, 40847, 40874, 44087, …). The farthest-flung twin is 84740 in Junction, UT, 2,214 miles away.
- 🧭 Farther north than 93% of all ZIP codes, and farther east than 97%.
- 🎯1,508 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 04478 and you would come out at 45.73°S, 110.23°E — 998 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 43m of daylight. Shortest: 8h 40m.
- 📏 At 257.6 square miles of land, 04478 is bigger than 94% of ZIP codes — room for about 196 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 316This ZIP316 |
|---|---|
| Households | 165This ZIP165 |
| Housing units | 875This ZIP875 |
| Median age | 69.6This ZIP69.6Maine44.8US 38.9 |
| Median household income | $53,229This ZIP$53,229Maine$74,733US $80,734 |
| Median home value | $379,300This ZIP$379,300Maine$296,600US $332,700 |
| Bachelor's degree or higher | 15.8%This ZIP15.8% |
| Population density | 1.2 / sq miThis ZIP1.2 / sq mi |
Business and tax activity
| Business establishments | 20This ZIP20 |
|---|---|
| Employees | 114This ZIP114 |
| Annual payroll | $3,469,000This ZIP$3,469,000 |
| Tax returns filed | 170This ZIP170 |
| Total adjusted gross income | $11,555,000This ZIP$11,555,000 |
Land area
| Land area | 257.61 sq miThis ZIP257.61 sq mi |
|---|---|
| Water area | 109.30 sq miThis ZIP109.30 sq mi |
Counties 04478 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Somerset County | 84.2% |
| Piscataquis County | 15.8% |
ZIP codes near 04478
| ZIP | City | Distance |
|---|---|---|
04442 | Greenville Junction, ME | 18.0 mi |
04441 | Greenville, ME | 22.3 mi |
04985 | West Forks, ME | 25.1 mi |
04945 | Jackman, ME | 26.8 mi |
04485 | Shirley Mills, ME | 27.5 mi |
04464 | Monson, ME | 32.5 mi |
04406 | Abbot, ME | 35.5 mi |
04925 | Caratunk, ME | 36.2 mi |
04443 | Guilford, ME | 38.2 mi |
04414 | Brownville, ME | 39.4 mi |
Find every ZIP code within 10 miles of 04478 →
Questions about this ZIP code
Where is ZIP code 04478?
04478 is in Rockwood, Maine, in Somerset County. Its published point location is 45.7282, -69.7680.
What county is 04478 in?
04478 spans 2 counties: Somerset County and Piscataquis County. Most of it falls in Somerset 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 04478?
Rockwood uses area code 207, from NANPA's telephone records.
What time zone is 04478 in?
04478 uses America/New_York.
How many people live in 04478?
About 316 people live in ZIP code 04478, in 165 households, at 1.2 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 04478?
$53,229 a year, against $74,733 across Maine.
What ZIP codes are near 04478?
The closest are 04442 (18 mi), 04441 (22.3 mi), 04985 (25.1 mi), 04945 (26.8 mi) and 04485 (27.5 mi).
Is 04478 a PO Box ZIP code?
04478 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “04478 ZIP Code — Rockwood, Maine (Somerset County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/04478
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/04478.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.