20813

ZIP 20813 is in Bethesda, Maryland, in Montgomery County; area codes 240, 301 and 227; Eastern time. Bethesda has 11 ZIP codes in all.

Type: No street area
Time zone: America/New_York
County: Montgomery
Metro area: Washington-Arlington-Alexandria, DC-VA-MD-WV
Coordinates: 39.1440, -77.2076

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 20877, whose figures describe that area — not this ZIP code.

☼ Live from 20813 — Bethesda, MD

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Where 20813 is

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This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 20813

🔢 Type 20813 into a pocket calculator and turn it upside down: EIBOZ — not quite a word, sorry.
➕ As a number, 20,813 = 13 × 1601. Its digits add up to 14, a total 1,416 other ZIP codes share.
💾In binary, the way a computer stores it: 101000101001101
🏠 Its numerical neighbours: 20812 (Glen Echo, MD, 13 mi away) and 20814 (Bethesda, MD, 11 mi away).
🔄 Backwards, 20813 becomes 31802, which is not a ZIP code at all.
👥 70 other ZIP codes are made of exactly the same digits (01238, 01832, 02138, 02381, 02813, 02831, …). The farthest-flung twin is 83210 in Aberdeen, ID, 1,862 miles away.
🧭 Farther north than 50% of all ZIP codes, and farther east than 81%.
🎯1,138 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
🌏 Dig straight through the Earth from 20813 and you would come out at 39.14°S, 102.79°E — 885 miles from Perth, Australia, the nearest big city to that spot.
☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.

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Land area

ZIP codes near 20813

ZIP	City	Distance
`20827`	Bethesda, MD	0.0 mi
`20848`	Rockville, MD	0.0 mi
`20859`	Potomac, MD	0.0 mi
`20875`	Germantown, MD	0.0 mi
`20884`	Gaithersburg, MD	0.0 mi
`20897`	Suburb Maryland Fac, MD	0.0 mi
`20898`	Gaithersburg, MD	0.0 mi
`20899`	Gaithersburg, MD	0.5 mi
`20877`	Gaithersburg, MD	0.9 mi
`20880`	Washington Grove, MD	1.8 mi

Find every ZIP code within 10 miles of 20813 →

Questions about this ZIP code

Where is ZIP code 20813?

20813 is in Bethesda, Maryland, in Montgomery County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 39.1440, -77.2076.

What county is 20813 in?

20813 lies in Montgomery County.

What area code is 20813?

Bethesda uses area codes 240, 301 and 227, from NANPA's telephone records.

What time zone is 20813 in?

20813 uses America/New_York.

What ZIP codes are near 20813?

The closest are 20827 (0 mi), 20848 (0 mi), 20859 (0 mi), 20875 (0 mi) and 20884 (0 mi).

Is 20813 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “20813 ZIP Code — Bethesda, Maryland (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20813

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/20813.json

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