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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/19901

19901

ZIP 19901 is in Dover, Delaware, in Kent County; area code 302; Eastern time. Dover has 5 ZIP codes; the others are 19903, 19904, 19905 and 19906.

Type
Standard
Time zone
America/New_York
County
Kent
Metro area
Dover, DE
Population
37,763
Coordinates
39.1815, -75.4735
☼ Live from 19901 — Dover, DE

Weather right now

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NEXRAD radar
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Local time: —

Where 19901 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 19901
  • 🔢 Type 19901 into a pocket calculator and turn it upside down: IOGGI — not quite a word, sorry.
  • ➕ As a number, 19,901 = 7 × 2843. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100110110111101
  • 🏠 Its numerical neighbours: 19899 (Wilmington, DE, 39 mi away) and 19902 (Dover Afb, DE, 4 mi away).
  • 🔄 Backwards, 19901 becomes 10991, which is not a ZIP code at all.
  • 👥 13 other ZIP codes are made of exactly the same digits (01199, 10199, 10919, 19019, 19091, 19109, …). The farthest-flung twin is 91109 in Pasadena, CA, 2,368 miles away.
  • 🧭 Farther north than 50% of all ZIP codes, and farther east than 86%.
  • 🎯1,229 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 19901 and you would come out at 39.18°S, 104.53°E — 808 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 75.8 square miles of land, 19901 is bigger than 71% of ZIP codes — room for about 58 Central Parks.
🌙 The sky over 19901 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population37,763This ZIP37,763
Households13,951This ZIP13,951
Housing units15,160This ZIP15,160
Median age33.6This ZIP33.6Delaware41.6US 38.9
Median household income$66,388This ZIP$66,388Delaware$84,954US $80,734
Median home value$273,000This ZIP$273,000Delaware$352,000US $332,700
Median gross rent$1,398This ZIP$1,398Delaware$1,401US $1,413
Bachelor's degree or higher26.9%This ZIP26.9%
Mean commute21.6 minThis ZIP21.6 min
Population density498.2 / sq miThis ZIP498.2 / sq mi

Business and tax activity

Business establishments2,193This ZIP2,193
Employees25,450This ZIP25,450
Annual payroll$1,608,104,000This ZIP$1,608,104,000
Tax returns filed15,870This ZIP15,870
Total adjusted gross income$948,267,000This ZIP$948,267,000

Land area

Land area75.80 sq miThis ZIP75.80 sq mi
Water area9.43 sq miThis ZIP9.43 sq mi

Other place names in 19901

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

ZIP codes near 19901

ZIPCityDistance
19961 Little Creek, DE 1.7 mi
19905 Dover, DE 3.2 mi
19906 Dover, DE 3.4 mi
19902 Dover Afb, DE 3.7 mi
19903 Dover, DE 5.2 mi
19904 Dover, DE 6.2 mi
19936 Cheswold, DE 6.5 mi
19962 Magnolia, DE 7.8 mi
19977 Smyrna, DE 9.0 mi
19980 Woodside, DE 9.1 mi

Find every ZIP code within 10 miles of 19901 →

Questions about this ZIP code

Where is ZIP code 19901?

19901 is in Dover, Delaware, in Kent County, part of the Dover, DE metropolitan area. Its published point location is 39.1815, -75.4735.

What county is 19901 in?

19901 lies in Kent County.

What area code is 19901?

Dover uses area code 302, from NANPA's telephone records.

What time zone is 19901 in?

19901 uses America/New_York.

How many people live in 19901?

About 37,763 people live in ZIP code 19901, in 13,951 households, at 498.2 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 19901?

$66,388 a year, against $84,954 across Delaware.

What ZIP codes are near 19901?

The closest are 19961 (1.7 mi), 19905 (3.2 mi), 19906 (3.4 mi), 19902 (3.7 mi) and 19903 (5.2 mi).

Is 19901 a PO Box ZIP code?

19901 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “19901 ZIP Code — Dover, Delaware (Kent County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/19901

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