21769
ZIP 21769 is Middletown, Maryland, mostly in Frederick County; area codes 240, 227 and 301; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Frederick +1 more
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- Population
- 11,965
- Coordinates
- 39.4425, -77.5689
Weather right now
Asking the National Weather Service…
Where 21769 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 21769 into a pocket calculator and turn it upside down: GgLIZ — not quite a word, sorry.
- ➕ As a number, 21,769 = 11 × 1979. Its digits add up to 25, a total 2,242 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101010100001001 - 🏠 Its numerical neighbours: 21767 (Maugansville, MD, 20 mi away) and 21770 (Monrovia, MD, 18 mi away).
- 🔄 Backwards, 21769 becomes 96712 — and that is a real ZIP code: Haleiwa, HI, 4,786 miles away.
- 👥 40 other ZIP codes are made of exactly the same digits (12769, 12967, 12976, 16729, 16927, 19726, …). The farthest-flung twin is 96271 in APO AA, a military post office, 6,931 miles away.
- 🧭 Farther north than 52% of all ZIP codes, and farther east than 80%.
- 🎯1,116 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21769 and you would come out at 39.44°S, 102.43°E — 913 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
- 📏 At 40.1 square miles of land, 21769 is bigger than 53% of ZIP codes — room for about 30 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 11,965This ZIP11,965 |
|---|---|
| Households | 4,146This ZIP4,146 |
| Housing units | 4,331This ZIP4,331 |
| Median age | 43.3This ZIP43.3Maryland39.4US 38.9 |
| Median household income | $151,563This ZIP$151,563Maryland$103,678US $80,734 |
| Median home value | $507,000This ZIP$507,000Maryland$419,900US $332,700 |
| Median gross rent | $1,708This ZIP$1,708Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 47.8%This ZIP47.8% |
| Mean commute | 33.5 minThis ZIP33.5 min |
| Population density | 298.2 / sq miThis ZIP298.2 / sq mi |
Business and tax activity
| Business establishments | 218This ZIP218 |
|---|---|
| Employees | 1,649This ZIP1,649 |
| Annual payroll | $87,581,000This ZIP$87,581,000 |
| Tax returns filed | 5,920This ZIP5,920 |
| Total adjusted gross income | $809,673,000This ZIP$809,673,000 |
Land area
| Land area | 40.13 sq miThis ZIP40.13 sq mi |
|---|---|
| Water area | 0.26 sq miThis ZIP0.26 sq mi |
Counties 21769 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Frederick County | 99.3% |
| Washington County | 0.7% |
Other place names in 21769
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21769
| ZIP | City | Distance |
|---|---|---|
21714 | Braddock Heights, MD | 3.8 mi |
21718 | Burkittsville, MD | 4.6 mi |
21779 | Rohrersville, MD | 4.7 mi |
21755 | Jefferson, MD | 5.7 mi |
21715 | Brownsville, MD | 6.6 mi |
21756 | Keedysville, MD | 6.8 mi |
21773 | Myersville, MD | 7.0 mi |
21702 | Frederick, MD | 7.2 mi |
21703 | Frederick, MD | 7.3 mi |
21758 | Knoxville, MD | 7.8 mi |
Find every ZIP code within 10 miles of 21769 →
Questions about this ZIP code
Where is ZIP code 21769?
21769 is in Middletown, Maryland, in Frederick County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 39.4425, -77.5689.
What county is 21769 in?
21769 spans 2 counties: Frederick County and Washington County. Most of it falls in Frederick 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 21769?
Middletown uses area codes 240, 227 and 301, from NANPA's telephone records.
What time zone is 21769 in?
21769 uses America/New_York.
How many people live in 21769?
About 11,965 people live in ZIP code 21769, in 4,146 households, at 298.2 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 21769?
$151,563 a year, against $103,678 across Maryland.
What ZIP codes are near 21769?
The closest are 21714 (3.8 mi), 21718 (4.6 mi), 21779 (4.7 mi), 21755 (5.7 mi) and 21715 (6.6 mi).
Is 21769 a PO Box ZIP code?
21769 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21769 ZIP Code — Middletown, Maryland (Frederick County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21769
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21769.json Underlying data is public domain or openly licensed — sources, vintages and licences.