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Where 19904 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.
- 🔢 Type 19904 into a pocket calculator and turn it upside down: hOGGI — not quite a word, sorry.
- ➕ As a number, 19,904 = 2 × 2 × 2 × 2 × 2 × 2 × 311. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
100110111000000 - 🏠 Its numerical neighbours: 19903 (Dover, DE, 9 mi away) and 19905 (Dover, DE, 4 mi away).
- 🔄 Backwards, 19904 becomes 40991, which is not a ZIP code at all.
- 👥 22 other ZIP codes are made of exactly the same digits (01949, 09419, 10949, 10994, 19049, 19094, …). The farthest-flung twin is 09419 in FPO AE, a military post office, 3,401 miles away.
- 🧭 Farther north than 50% of all ZIP codes, and farther east than 86%.
- 🎯1,223 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 19904 and you would come out at 39.17°S, 104.41°E — 813 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
- 📏 At 43.2 square miles of land, 19904 is bigger than 55% of ZIP codes — room for about 33 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 38,818This ZIP38,818 |
|---|---|
| Households | 14,986This ZIP14,986 |
| Housing units | 16,108This ZIP16,108 |
| Median age | 39.8This ZIP39.8Delaware41.6US 38.9 |
| Median household income | $66,908This ZIP$66,908Delaware$84,954US $80,734 |
| Median home value | $309,400This ZIP$309,400Delaware$352,000US $332,700 |
| Median gross rent | $1,370This ZIP$1,370Delaware$1,401US $1,413 |
| Bachelor's degree or higher | 27.3%This ZIP27.3% |
| Mean commute | 25.0 minThis ZIP25.0 min |
| Population density | 898.8 / sq miThis ZIP898.8 / sq mi |
Business and tax activity
| Business establishments | 1,016This ZIP1,016 |
|---|---|
| Employees | 12,387This ZIP12,387 |
| Annual payroll | $776,129,000This ZIP$776,129,000 |
| Tax returns filed | 17,590This ZIP17,590 |
| Total adjusted gross income | $1,112,222,000This ZIP$1,112,222,000 |
Land area
| Land area | 43.19 sq miThis ZIP43.19 sq mi |
|---|---|
| Water area | 0.33 sq miThis ZIP0.33 sq mi |
Other place names in 19904
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 19904
| ZIP | City | Distance |
|---|---|---|
19906 | Dover, DE | 3.3 mi |
19936 | Cheswold, DE | 3.3 mi |
19905 | Dover, DE | 3.5 mi |
19955 | Kenton, DE | 5.6 mi |
19953 | Hartly, DE | 5.9 mi |
19901 | Dover, DE | 6.2 mi |
19934 | Camden Wyoming, DE | 6.3 mi |
19980 | Woodside, DE | 6.8 mi |
19902 | Dover Afb, DE | 7.1 mi |
19961 | Little Creek, DE | 7.5 mi |
Find every ZIP code within 10 miles of 19904 →
Questions about this ZIP code
Where is ZIP code 19904?
19904 is in Dover, Delaware, in Kent County, part of the Dover, DE metropolitan area. Its published point location is 39.1713, -75.5876.
What county is 19904 in?
19904 lies in Kent County.
What area code is 19904?
Dover uses area code 302, from NANPA's telephone records.
What time zone is 19904 in?
19904 uses America/New_York.
How many people live in 19904?
About 38,818 people live in ZIP code 19904, in 14,986 households, at 898.8 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 19904?
$66,908 a year, against $84,954 across Delaware.
What ZIP codes are near 19904?
The closest are 19906 (3.3 mi), 19936 (3.3 mi), 19905 (3.5 mi), 19955 (5.6 mi) and 19953 (5.9 mi).
Is 19904 a PO Box ZIP code?
19904 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “19904 ZIP Code — Dover, Delaware (Kent County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/19904
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/19904.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.