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Where 20777 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 20777 into a pocket calculator and turn it upside down: LLLOZ — not quite a word, sorry.
- ➕ As a number, 20,777 = 79 × 263. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101000100101001 - 🏠 Its numerical neighbours: 20776 (Harwood, MD, 29 mi away) and 20778 (West River, MD, 32 mi away).
- 🔄 Backwards, 20777 becomes 77702 — and that is a real ZIP code: Beaumont, TX, 1,157 miles away.
- 👥 12 other ZIP codes are made of exactly the same digits (02777, 07727, 27707, 70727, 70772, 72770, …). The farthest-flung twin is 77072 in Houston, TX, 1,243 miles away.
- 🧭 Farther north than 50% of all ZIP codes, and farther east than 82%.
- 🎯1,150 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 20777 and you would come out at 39.17°S, 103.03°E — 876 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
- 📏 At 7.5 square miles of land, 20777 is bigger than 24% of ZIP codes — room for about 5.7 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,221This ZIP3,221 |
|---|---|
| Households | 1,097This ZIP1,097 |
| Housing units | 1,117This ZIP1,117 |
| Median age | 45.5This ZIP45.5Maryland39.4US 38.9 |
| Median household income | $226,146This ZIP$226,146Maryland$103,678US $80,734 |
| Median home value | $861,900This ZIP$861,900Maryland$419,900US $332,700 |
| Median gross rent | $2,875This ZIP$2,875Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 75.2%This ZIP75.2% |
| Mean commute | 32.2 minThis ZIP32.2 min |
| Population density | 427.0 / sq miThis ZIP427.0 / sq mi |
Business and tax activity
| Business establishments | 109This ZIP109 |
|---|---|
| Employees | 581This ZIP581 |
| Annual payroll | $30,052,000This ZIP$30,052,000 |
| Tax returns filed | 1,760This ZIP1,760 |
| Total adjusted gross income | $418,202,000This ZIP$418,202,000 |
Land area
| Land area | 7.54 sq miThis ZIP7.54 sq mi |
|---|---|
| Water area | 0.04 sq miThis ZIP0.04 sq mi |
Counties 20777 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Howard County | 98.3% |
| Montgomery County | 1.7% |
Other place names in 20777
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 20777
| ZIP | City | Distance |
|---|---|---|
20861 | Ashton, MD | 2.4 mi |
20759 | Fulton, MD | 2.5 mi |
20862 | Brinklow, MD | 2.6 mi |
21029 | Clarksville, MD | 2.7 mi |
20868 | Spencerville, MD | 3.4 mi |
20860 | Sandy Spring, MD | 3.9 mi |
21041 | Ellicott City, MD | 4.5 mi |
21150 | Simpsonville, MD | 4.5 mi |
21036 | Dayton, MD | 4.6 mi |
20905 | Silver Spring, MD | 4.6 mi |
Find every ZIP code within 10 miles of 20777 →
Questions about this ZIP code
Where is ZIP code 20777?
20777 is in Highland, Maryland, in Howard County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.1749, -76.9691.
What county is 20777 in?
20777 spans 2 counties: Howard County and Montgomery County. Most of it falls in Howard 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 20777?
Highland uses area codes 410, 443 and 667, from NANPA's telephone records.
What time zone is 20777 in?
20777 uses America/New_York.
How many people live in 20777?
About 3,221 people live in ZIP code 20777, in 1,097 households, at 427.0 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 20777?
$226,146 a year, against $103,678 across Maryland.
What ZIP codes are near 20777?
The closest are 20861 (2.4 mi), 20759 (2.5 mi), 20862 (2.6 mi), 21029 (2.7 mi) and 20868 (3.4 mi).
Is 20777 a PO Box ZIP code?
20777 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “20777 ZIP Code — Highland, Maryland (Howard County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20777
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/20777.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.