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Where 20664 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 20664 into a pocket calculator and turn it upside down: hggOZ — not quite a word, sorry.
- ➕ As a number, 20,664 = 2 × 2 × 2 × 3 × 3 × 7 × 41. Its digits add up to 18, a total 2,332 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101000010111000 - 🏠 Its numerical neighbours: 20662 (Nanjemoy, MD, 17 mi away) and 20667 (Park Hall, MD, 27 mi away).
- 🔄 Backwards, 20664 becomes 46602, which is not a ZIP code at all.
- 👥 31 other ZIP codes are made of exactly the same digits (02466, 02646, 02664, 04266, 04626, 04662, …). The farthest-flung twin is 66420 in Dover, KS, 1,025 miles away.
- 🧭 Farther south than 56% of all ZIP codes, and farther east than 82%.
- 🎯1,164 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 20664 and you would come out at 38.34°S, 103.09°E — 845 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 50m of daylight. Shortest: 9h 29m.
- 📏 At 40.9 square miles of land, 20664 is bigger than 54% of ZIP codes — room for about 31 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,138This ZIP3,138 |
|---|---|
| Households | 1,229This ZIP1,229 |
| Housing units | 1,509This ZIP1,509 |
| Median age | 44.3This ZIP44.3Maryland39.4US 38.9 |
| Median household income | $88,438This ZIP$88,438Maryland$103,678US $80,734 |
| Median home value | $475,700This ZIP$475,700Maryland$419,900US $332,700 |
| Median gross rent | $1,201This ZIP$1,201Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 18.9%This ZIP18.9% |
| Mean commute | 37.9 minThis ZIP37.9 min |
| Population density | 76.8 / sq miThis ZIP76.8 / sq mi |
Business and tax activity
| Business establishments | 43This ZIP43 |
|---|---|
| Employees | 288This ZIP288 |
| Annual payroll | $23,691,000This ZIP$23,691,000 |
| Tax returns filed | 1,490This ZIP1,490 |
| Total adjusted gross income | $132,567,000This ZIP$132,567,000 |
Land area
| Land area | 40.87 sq miThis ZIP40.87 sq mi |
|---|---|
| Water area | 11.67 sq miThis ZIP11.67 sq mi |
Other place names in 20664
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 20664
| ZIP | City | Distance |
|---|---|---|
20645 | Issue, MD | 3.2 mi |
20682 | Rock Point, MD | 5.3 mi |
20622 | Charlotte Hall, MD | 5.4 mi |
20621 | Chaptico, MD | 6.0 mi |
20632 | Faulkner, MD | 6.0 mi |
20661 | Mount Victoria, MD | 6.4 mi |
22448 | Dahlgren, VA | 6.4 mi |
20625 | Cobb Island, MD | 6.9 mi |
20618 | Bushwood, MD | 7.6 mi |
20611 | Bel Alton, MD | 8.8 mi |
Find every ZIP code within 10 miles of 20664 →
Questions about this ZIP code
Where is ZIP code 20664?
20664 is in Newburg, Maryland, in Charles County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.3427, -76.9102.
What county is 20664 in?
20664 lies in Charles County.
What area code is 20664?
Newburg uses area codes 240, 301 and 227, from NANPA's telephone records.
What time zone is 20664 in?
20664 uses America/New_York.
How many people live in 20664?
About 3,138 people live in ZIP code 20664, in 1,229 households, at 76.8 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 20664?
$88,438 a year, against $103,678 across Maryland.
What ZIP codes are near 20664?
The closest are 20645 (3.2 mi), 20682 (5.3 mi), 20622 (5.4 mi), 20621 (6 mi) and 20632 (6 mi).
Is 20664 a PO Box ZIP code?
20664 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “20664 ZIP Code — Newburg, Maryland (Charles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20664
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/20664.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.