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zipcodes.pro — ZIP/20609

20609

ZIP 20609 is Avenue, Maryland, in St. Mary's County; area codes 240, 301 and 227; Eastern time.

Type
Standard
Time zone
America/New_York
County
St. Mary's
Metro area
Lexington Park, MD
Population
714
Coordinates
38.2812, -76.7485
☼ Live from 20609 — Avenue, MD

Weather right now

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Local time: —

Where 20609 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 20609
  • 🔢 Type 20609 into a pocket calculator and turn it upside down: GOgOZ — not quite a word, sorry.
  • ➕ As a number, 20,609 = 37 × 557. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000010000001
  • 🏠 Its numerical neighbours: 20608 (Aquasco, MD, 21 mi away) and 20610 (Barstow, MD, 18 mi away).
  • 🔄 Backwards, 20609 becomes 90602 — and that is a real ZIP code: Whittier, CA, 2,303 miles away.
  • 👥 29 other ZIP codes are made of exactly the same digits (00692, 00926, 00962, 02906, 06029, 06092, …). The farthest-flung twin is 09602 in APO AE, a military post office, 6,753 miles away.
  • 🧭 Farther south than 56% of all ZIP codes, and farther east than 83%.
  • 🎯1,173 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20609 and you would come out at 38.28°S, 103.25°E — 835 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 50m of daylight. Shortest: 9h 30m.
  • 📏 At 10.0 square miles of land, 20609 is bigger than 27% of ZIP codes — room for about 7.6 Central Parks.
🌙 The sky over 20609 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population714This ZIP714
Households341This ZIP341
Housing units370This ZIP370
Median age59.3This ZIP59.3Maryland39.4US 38.9
Median household income$118,102This ZIP$118,102Maryland$103,678US $80,734
Median home value$568,400This ZIP$568,400Maryland$419,900US $332,700
Bachelor's degree or higher20.6%This ZIP20.6%
Mean commute52.4 minThis ZIP52.4 min
Population density71.3 / sq miThis ZIP71.3 / sq mi

Business and tax activity

Business establishments10This ZIP10
Employees38This ZIP38
Annual payroll$1,452,000This ZIP$1,452,000
Tax returns filed570This ZIP570
Total adjusted gross income$50,404,000This ZIP$50,404,000

Land area

Land area10.02 sq miThis ZIP10.02 sq mi
Water area3.16 sq miThis ZIP3.16 sq mi

ZIP codes near 20609

ZIPCityDistance
20606 Abell, MD 1.6 mi
20627 Compton, MD 2.4 mi
20618 Bushwood, MD 2.8 mi
20626 Coltons Point, MD 3.2 mi
20624 Clements, MD 4.0 mi
20621 Chaptico, MD 4.2 mi
20656 Loveville, MD 5.4 mi
20682 Rock Point, MD 5.4 mi
20625 Cobb Island, MD 5.5 mi
20661 Mount Victoria, MD 5.6 mi

Find every ZIP code within 10 miles of 20609 →

Questions about this ZIP code

Where is ZIP code 20609?

20609 is in Avenue, Maryland, in St. Mary's County, part of the Lexington Park, MD metropolitan area. Its published point location is 38.2812, -76.7485.

What county is 20609 in?

20609 lies in St. Mary's County.

What area code is 20609?

Avenue uses area codes 240, 301 and 227, from NANPA's telephone records.

What time zone is 20609 in?

20609 uses America/New_York.

How many people live in 20609?

About 714 people live in ZIP code 20609, in 341 households, at 71.3 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 20609?

$118,102 a year, against $103,678 across Maryland.

What ZIP codes are near 20609?

The closest are 20606 (1.6 mi), 20627 (2.4 mi), 20618 (2.8 mi), 20626 (3.2 mi) and 20624 (4 mi).

Is 20609 a PO Box ZIP code?

20609 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “20609 ZIP Code — Avenue, Maryland (St. Mary's County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20609

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