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zipcodes.pro — ZIP/28521

28521

ZIP 28521 is Chinquapin, North Carolina, mostly in Duplin County; area codes 910 and 472; Eastern time.

Type
Standard
Time zone
America/New_York
County
Duplin +1 more
Metro area
none
Population
1,593
Coordinates
34.8179, -77.7366
☼ Live from 28521 — Chinquapin, NC

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Where 28521 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 28521
  • 🔢 Type 28521 into a pocket calculator and turn it upside down: IZSBZ — not quite a word, sorry.
  • ➕ As a number, 28,521 = 3 × 3 × 3169. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 110111101101001
  • 🏠 Its numerical neighbours: 28520 (Cedar Island, NC, 73 mi away) and 28522 (Comfort, NC, 18 mi away).
  • 🔄 Backwards, 28521 becomes 12582 — and that is a real ZIP code: Stormville, NY, 513 miles away.
  • 👥 31 other ZIP codes are made of exactly the same digits (12528, 12582, 12852, 15228, 15282, 15822, …). The farthest-flung twin is 85122 in Casa Grande, AZ, 1,946 miles away.
  • 🧭 Farther south than 75% of all ZIP codes, and farther east than 79%.
  • 🎯1,193 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 28521 and you would come out at 34.82°S, 102.26°E — 808 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 30m of daylight. Shortest: 9h 49m.
  • 📏 At 41.4 square miles of land, 28521 is bigger than 54% of ZIP codes — room for about 31 Central Parks.
🌙 The sky over 28521 today
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🌋 Shake report
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Source: USGS.

People and housing

Population1,593This ZIP1,593
Households634This ZIP634
Housing units934This ZIP934
Median age44.9This ZIP44.9North Carolina39.1US 38.9
Median household income$47,813This ZIP$47,813North Carolina$72,388US $80,734
Median home value$128,800This ZIP$128,800North Carolina$288,900US $332,700
Bachelor's degree or higher17.3%This ZIP17.3%
Mean commute28.3 minThis ZIP28.3 min
Population density38.5 / sq miThis ZIP38.5 / sq mi

Business and tax activity

Business establishments26This ZIP26
Employees114This ZIP114
Annual payroll$3,255,000This ZIP$3,255,000
Tax returns filed920This ZIP920
Total adjusted gross income$50,288,000This ZIP$50,288,000

Land area

Land area41.37 sq miThis ZIP41.37 sq mi
Water area0.10 sq miThis ZIP0.10 sq mi

Counties 28521 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Duplin County 96.5%
Onslow County 3.5%

Other place names in 28521

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

ZIP codes near 28521

ZIPCityDistance
28518 Beulaville, NC 5.4 mi
28574 Richlands, NC 9.3 mi
28466 Wallace, NC 9.5 mi
28454 Maple Hill, NC 11.2 mi
28572 Pink Hill, NC 14.0 mi
28540 Jacksonville, NC 14.4 mi
28349 Kenansville, NC 15.6 mi
28464 Teachey, NC 16.3 mi
28542 Camp Lejeune, NC 16.7 mi
28522 Comfort, NC 17.7 mi

Find every ZIP code within 10 miles of 28521 →

Questions about this ZIP code

Where is ZIP code 28521?

28521 is in Chinquapin, North Carolina, in Duplin County. Its published point location is 34.8179, -77.7366.

What county is 28521 in?

28521 spans 2 counties: Duplin County and Onslow County. Most of it falls in Duplin County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 28521?

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

What time zone is 28521 in?

28521 uses America/New_York.

How many people live in 28521?

About 1,593 people live in ZIP code 28521, in 634 households, at 38.5 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 28521?

$47,813 a year, against $72,388 across North Carolina.

What ZIP codes are near 28521?

The closest are 28518 (5.4 mi), 28574 (9.3 mi), 28466 (9.5 mi), 28454 (11.2 mi) and 28572 (14 mi).

Is 28521 a PO Box ZIP code?

28521 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “28521 ZIP Code — Chinquapin, North Carolina (Duplin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/28521

Machine-readable version of these facts:

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