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ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/28540

28540

ZIP 28540 is in Jacksonville, North Carolina, in Onslow County; area codes 910 and 472; Eastern time. Jacksonville has 3 ZIP codes; the others are 28541 and 28546.

Type
Standard
Time zone
America/New_York
County
Onslow
Metro area
Jacksonville, NC
Population
49,141
Coordinates
34.7443, -77.4990
☼ Live from 28540 — Jacksonville, NC

Weather right now

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Local time: —

Where 28540 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.

★ Weird and wonderful facts about 28540
  • 🔢 Type 28540 into a pocket calculator and turn it upside down: OhSBZ — not quite a word, sorry.
  • ➕ As a number, 28,540 = 2 × 2 × 5 × 1427. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 110111101111100
  • 🏠 Its numerical neighbours: 28539 (Hubert, NC, 16 mi away) and 28541 (Jacksonville, NC, 7 mi away).
  • 🔄 Backwards, 28540 becomes 04582, which is not a ZIP code at all.
  • 👥 62 other ZIP codes are made of exactly the same digits (02458, 02584, 04258, 04285, 04852, 05482, …). The farthest-flung twin is 85042 in Phoenix, AZ, 1,971 miles away.
  • 🧭 Farther south than 75% of all ZIP codes, and farther east than 80%.
  • 🎯1,208 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 28540 and you would come out at 34.74°S, 102.50°E — 794 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 29m of daylight. Shortest: 9h 49m.
  • 📏 At 110.3 square miles of land, 28540 is bigger than 80% of ZIP codes — room for about 84 Central Parks.
🌙 The sky over 28540 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population49,141This ZIP49,141
Households19,048This ZIP19,048
Housing units21,131This ZIP21,131
Median age30.2This ZIP30.2North Carolina39.1US 38.9
Median household income$65,625This ZIP$65,625North Carolina$72,388US $80,734
Median home value$223,800This ZIP$223,800North Carolina$288,900US $332,700
Median gross rent$1,091This ZIP$1,091North Carolina$1,228US $1,413
Bachelor's degree or higher24.3%This ZIP24.3%
Mean commute23.8 minThis ZIP23.8 min
Population density445.5 / sq miThis ZIP445.5 / sq mi

Business and tax activity

Business establishments928This ZIP928
Employees10,594This ZIP10,594
Annual payroll$373,886,000This ZIP$373,886,000
Tax returns filed20,770This ZIP20,770
Total adjusted gross income$1,167,903,000This ZIP$1,167,903,000

Land area

Land area110.31 sq miThis ZIP110.31 sq mi
Water area2.46 sq miThis ZIP2.46 sq mi

Other place names in 28540

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 28540

ZIPCityDistance
28542 Camp Lejeune, NC 2.3 mi
28543 Tarawa Terrace, NC 5.8 mi
28541 Jacksonville, NC 7.1 mi
28545 Mccutcheon Field, NC 7.1 mi
28546 Jacksonville, NC 8.4 mi
28454 Maple Hill, NC 10.2 mi
28574 Richlands, NC 10.6 mi
28544 Midway Park, NC 12.3 mi
28547 Camp Lejeune, NC 12.4 mi
28521 Chinquapin, NC 14.4 mi

Find every ZIP code within 10 miles of 28540 →

Questions about this ZIP code

Where is ZIP code 28540?

28540 is in Jacksonville, North Carolina, in Onslow County, part of the Jacksonville, NC metropolitan area. Its published point location is 34.7443, -77.4990.

What county is 28540 in?

28540 lies in Onslow County.

What area code is 28540?

Jacksonville uses area codes 910 and 472, from NANPA's telephone records.

What time zone is 28540 in?

28540 uses America/New_York.

How many people live in 28540?

About 49,141 people live in ZIP code 28540, in 19,048 households, at 445.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 28540?

$65,625 a year, against $72,388 across North Carolina.

What ZIP codes are near 28540?

The closest are 28542 (2.3 mi), 28543 (5.8 mi), 28541 (7.1 mi), 28545 (7.1 mi) and 28546 (8.4 mi).

Is 28540 a PO Box ZIP code?

28540 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “28540 ZIP Code — Jacksonville, North Carolina (Onslow County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/28540

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