21027

ZIP 21027 is Chase, Maryland, in Baltimore County; area codes 443, 667 and 410; Eastern time.

Type: No street area
Time zone: America/New_York
County: Baltimore
Metro area: Baltimore-Columbia-Towson, MD
Coordinates: 39.3634, -76.3711

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 21220, whose figures describe that area — not this ZIP code.

☼ Live from 21027 — Chase, MD

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Where 21027 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 21027

🔢 Type 21027 into a pocket calculator and turn it upside down: LZOIZ — not quite a word, sorry.
➕ As a number, 21,027 = 3 × 43 × 163. Its digits add up to 12, a total 940 other ZIP codes share.
💾In binary, the way a computer stores it: 101001000100011
🏠 Its numerical neighbours: 21023 (Butler, MD, 23 mi away) and 21028 (Churchville, MD, 15 mi away).
🔄 Backwards, 21027 becomes 72012 — and that is a real ZIP code: Beebe, AR, 904 miles away.
👥 37 other ZIP codes are made of exactly the same digits (01227, 02127, 02217, 02712, 02721, 10272, …). The farthest-flung twin is 70122 in New Orleans, LA, 1,009 miles away.
🧭 Farther north than 51% of all ZIP codes, and farther east than 84%.
🎯1,180 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
🌏 Dig straight through the Earth from 21027 and you would come out at 39.36°S, 103.63°E — 855 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 21027

ZIP	City	Distance
`21220`	Middle River, MD	1.8 mi
`21162`	White Marsh, MD	2.6 mi
`21010`	Gunpowder, MD	4.6 mi
`21156`	Upper Falls, MD	4.9 mi
`21128`	Perry Hall, MD	5.0 mi
`21085`	Joppa, MD	5.7 mi
`21221`	Essex, MD	6.1 mi
`21236`	Nottingham, MD	6.3 mi
`21087`	Kingsville, MD	6.3 mi
`21040`	Edgewood, MD	6.6 mi

Find every ZIP code within 10 miles of 21027 →

Questions about this ZIP code

Where is ZIP code 21027?

21027 is in Chase, Maryland, in Baltimore County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.3634, -76.3711.

What county is 21027 in?

21027 lies in Baltimore County.

What area code is 21027?

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

What time zone is 21027 in?

21027 uses America/New_York.

What ZIP codes are near 21027?

The closest are 21220 (1.8 mi), 21162 (2.6 mi), 21010 (4.6 mi), 21156 (4.9 mi) and 21128 (5 mi).

Is 21027 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. “21027 ZIP Code — Chase, Maryland (Baltimore County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21027

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/21027.json

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