20390
ZIP 20390 is in Washington, District of Columbia; area codes 202 and 771; Eastern time. Washington has 271 ZIP codes in all.
- Type
- Standard
- Time zone
- America/New_York
- County
- District of Columbia
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- Population
- 246
- Coordinates
- 38.8790, -76.9937
Weather right now
Asking the National Weather Service…
Where 20390 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 20390 into a pocket calculator and turn it upside down: OGEOZ — not quite a word, sorry.
- ➕ As a number, 20,390 = 2 × 5 × 2039. Its digits add up to 14, a total 1,416 other ZIP codes share.
- 💾In binary, the way a computer stores it:
100111110100110 - 🏠 Its numerical neighbours: 20389 (Washington, DC, 1 mi away) and 20391 (Washington Navy Yard, DC, 3 mi away).
- 🔄 Backwards, 20390 becomes 09302, which is not a ZIP code at all.
- 👥 23 other ZIP codes are made of exactly the same digits (00923, 02093, 02903, 03290, 03902, 20039, …). The farthest-flung twin is 93002 in Ventura, CA, 2,347 miles away.
- 🧭 Farther south than 52% of all ZIP codes, and farther east than 82%.
- 🎯1,152 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 20390 and you would come out at 38.88°S, 103.01°E — 866 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 54m of daylight. Shortest: 9h 26m.
- 📏 At 0.004 square miles of land, 20390 is bigger than 0% of ZIP codes — about 2 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 246This ZIP246 |
|---|---|
| Households | 0 |
| Housing units | 0 |
| Median age | 22.2This ZIP22.2District of Columbia34.9US 38.9 |
| Bachelor's degree or higher | 0.0% |
| Mean commute | 12.6 minThis ZIP12.6 min |
| Population density | 61,500.0 / sq miThis ZIP61,500.0 / sq mi |
Land area
| Land area | 0.00 sq miThis ZIP0.00 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 20390
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 20390
| ZIP | City | Distance |
|---|---|---|
20003 | Washington, DC | 0.2 mi |
20388 | Washington Navy Yard, DC | 0.5 mi |
20541 | Washington, DC | 0.8 mi |
20557 | Washington, DC | 0.8 mi |
20559 | Washington, DC | 0.8 mi |
20540 | Washington, DC | 0.9 mi |
20515 | Washington, DC | 1.0 mi |
20510 | Washington, DC | 1.2 mi |
20204 | Washington, DC | 1.2 mi |
20460 | Washington, DC | 1.4 mi |
Find every ZIP code within 10 miles of 20390 →
Questions about this ZIP code
Where is ZIP code 20390?
20390 is in Washington, District of Columbia, in District of Columbia, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.8790, -76.9937.
What county is 20390 in?
20390 lies in District of Columbia.
What area code is 20390?
Washington uses area codes 202 and 771, from NANPA's telephone records.
What time zone is 20390 in?
20390 uses America/New_York.
How many people live in 20390?
About 246 people live in ZIP code 20390, at 61,500.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 20390?
The closest are 20003 (0.2 mi), 20388 (0.5 mi), 20541 (0.8 mi), 20557 (0.8 mi) and 20559 (0.8 mi).
Is 20390 a PO Box ZIP code?
20390 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “20390 ZIP Code — Washington, District of Columbia.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20390
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/20390.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.