21284

ZIP 21284 is in Towson, Maryland, in Baltimore County; area codes 410, 443 and 667; Eastern time. Towson has 5 ZIP codes; the others are 21204, 21252, 21285 and 21286.

Type: No street area
Time zone: America/New_York
County: Baltimore
Metro area: Baltimore-Columbia-Towson, MD
Coordinates: 39.4015, -76.6019

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 21286, whose figures describe that area — not this ZIP code.

☼ Live from 21284 — Towson, MD

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Where 21284 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 21284

🔢 Type 21284 into a pocket calculator and turn it upside down: hBZIZ — not quite a word, sorry.
➕ As a number, 21,284 = 2 × 2 × 17 × 313. Its digits add up to 17, a total 2,133 other ZIP codes share.
💾In binary, the way a computer stores it: 101001100100100
🏠 Its numerical neighbours: 21282 (Pikesville, MD, 7 mi away) and 21285 (Towson, MD, 1 mi away).
🔄 Backwards, 21284 becomes 48212 — and that is a real ZIP code: Hamtramck, MI, 396 miles away.
👥 33 other ZIP codes are made of exactly the same digits (12248, 12428, 12482, 12824, 12842, 14228, …). The farthest-flung twin is 84122 in Salt Lake City, UT, 1,857 miles away.
🧭 Farther north than 52% of all ZIP codes, and farther east than 83%.
🎯1,167 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
🌏 Dig straight through the Earth from 21284 and you would come out at 39.40°S, 103.40°E — 867 miles from Perth, Australia, the nearest big city to that spot.
☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.

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Source: USGS.

Land area

ZIP codes near 21284

ZIP	City	Distance
`21252`	Towson, MD	0.7 mi
`21285`	Towson, MD	1.3 mi
`21204`	Towson, MD	1.3 mi
`21286`	Towson, MD	1.7 mi
`21212`	Baltimore, MD	2.5 mi
`21139`	Riderwood, MD	2.6 mi
`21239`	Baltimore, MD	2.6 mi
`21094`	Lutherville Timonium, MD	2.6 mi
`21093`	Lutherville Timonium, MD	3.3 mi
`21210`	Baltimore, MD	3.5 mi

Find every ZIP code within 10 miles of 21284 →

Questions about this ZIP code

Where is ZIP code 21284?

21284 is in Towson, Maryland, in Baltimore County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.4015, -76.6019.

What county is 21284 in?

21284 lies in Baltimore County.

What area code is 21284?

Towson uses area codes 410, 443 and 667, from NANPA's telephone records.

What time zone is 21284 in?

21284 uses America/New_York.

What ZIP codes are near 21284?

The closest are 21252 (0.7 mi), 21285 (1.3 mi), 21204 (1.3 mi), 21286 (1.7 mi) and 21212 (2.5 mi).

Is 21284 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. “21284 ZIP Code — Towson, Maryland (Baltimore County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21284

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/21284.json

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