00544

ZIP 00544 is in Holtsville, New York, in Suffolk County; area codes 631 and 934; Eastern time. Holtsville has 3 ZIP codes; the others are 00501 and 11742.

Type: No street area
Time zone: America/New_York
County: Suffolk
Metro area: New York-Newark-Jersey City, NY-NJ
Coordinates: 40.8154, -73.0451

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 11742, whose figures describe that area — not this ZIP code.

☼ Live from 00544 — Holtsville, NY

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Where 00544 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 00544

🔢 Type 00544 into a pocket calculator and turn it upside down: hhSOO — not quite a word, sorry.
➕ As a number, 544 = 2 × 2 × 2 × 2 × 2 × 17. Its digits add up to 13, a total 1,179 other ZIP codes share.
💾In binary, the way a computer stores it: 1000100000
🏠 Its numerical neighbours: 00501 (Holtsville, NY, 0 mi away) and 00601 (Adjuntas, PR, 1,608 mi away). Next door on paper, a road trip in real life.
🔄 Backwards, 00544 becomes 44500, which is not a ZIP code at all.
👥 14 other ZIP codes are made of exactly the same digits (04054, 04450, 05404, 05440, 40045, 40405, …). The farthest-flung twin is 50440 in Grafton, IA, 1,039 miles away.
🧭 Farther north than 65% of all ZIP codes, and farther east than 93%.
🎯1,342 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
🌏 Dig straight through the Earth from 00544 and you would come out at 40.82°S, 106.95°E — 787 miles from Perth, Australia, the nearest big city to that spot.
☀Longest day of the year: 15h 06m of daylight. Shortest: 9h 14m.

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Source: USGS.

Land area

ZIP codes near 00544

ZIP	City	Distance
`00501`	Holtsville, NY	0.0 mi
`11742`	Holtsville, NY	0.4 mi
`11738`	Farmingville, NY	1.6 mi
`11741`	Holbrook, NY	1.9 mi
`11763`	Medford, NY	3.3 mi
`11779`	Ronkonkoma, NY	3.6 mi
`11784`	Selden, NY	3.7 mi
`11720`	Centereach, NY	4.3 mi
`11715`	Blue Point, NY	4.5 mi
`11755`	Lake Grove, NY	4.8 mi

Find every ZIP code within 10 miles of 00544 →

Questions about this ZIP code

Where is ZIP code 00544?

00544 is in Holtsville, New York, in Suffolk County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.8154, -73.0451.

What county is 00544 in?

00544 lies in Suffolk County.

What area code is 00544?

Holtsville uses area codes 631 and 934, from NANPA's telephone records.

What time zone is 00544 in?

00544 uses America/New_York.

What ZIP codes are near 00544?

The closest are 00501 (0 mi), 11742 (0.4 mi), 11738 (1.6 mi), 11741 (1.9 mi) and 11763 (3.3 mi).

Is 00544 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. “00544 ZIP Code — Holtsville, New York (Suffolk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/00544

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/00544.json

Underlying data is public domain or openly licensed — sources, vintages and licences.