20670
ZIP 20670 is Patuxent River, Maryland, in St. Mary's County; area codes 410, 667 and 443; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- St. Mary's
- Metro area
- Lexington Park, MD
- Population
- 2,046
- Coordinates
- 38.2848, -76.4077
Weather right now
Asking the National Weather Service…
Where 20670 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 20670 into a pocket calculator and turn it upside down: OLgOZ — not quite a word, sorry.
- ➕ As a number, 20,670 = 2 × 3 × 5 × 13 × 53. Its digits add up to 15, a total 1,657 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101000010111110 - 🏠 Its numerical neighbours: 20667 (Park Hall, MD, 5 mi away) and 20674 (Piney Point, MD, 12 mi away).
- 🔄 Backwards, 20670 becomes 07602 — and that is a real ZIP code: Hackensack, NJ, 219 miles away.
- 👥 30 other ZIP codes are made of exactly the same digits (00627, 00726, 02067, 02670, 02760, 06027, …). The farthest-flung twin is 00726 in Caguas, PR, 1,519 miles away.
- 🧭 Farther south than 56% of all ZIP codes, and farther east than 84%.
- 🎯1,191 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 20670 and you would come out at 38.28°S, 103.59°E — 819 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 50m of daylight. Shortest: 9h 30m.
- 📏 At 9.3 square miles of land, 20670 is bigger than 26% of ZIP codes — room for about 7.1 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 2,046This ZIP2,046 |
|---|---|
| Households | 439This ZIP439 |
| Housing units | 513This ZIP513 |
| Median age | 22.9This ZIP22.9Maryland39.4US 38.9 |
| Median household income | $70,371This ZIP$70,371Maryland$103,678US $80,734 |
| Median gross rent | $2,292This ZIP$2,292Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 29.8%This ZIP29.8% |
| Mean commute | 8.1 minThis ZIP8.1 min |
| Population density | 218.9 / sq miThis ZIP218.9 / sq mi |
Business and tax activity
| Business establishments | 76This ZIP76 |
|---|---|
| Employees | 1,301This ZIP1,301 |
| Annual payroll | $123,389,000This ZIP$123,389,000 |
| Tax returns filed | 420This ZIP420 |
| Total adjusted gross income | $30,786,000This ZIP$30,786,000 |
Land area
| Land area | 9.35 sq miThis ZIP9.35 sq mi |
|---|---|
| Water area | 5.68 sq miThis ZIP5.68 sq mi |
ZIP codes near 20670
| ZIP | City | Distance |
|---|---|---|
20653 | Lexington Park, MD | 3.5 mi |
20688 | Solomons, MD | 4.2 mi |
20629 | Dowell, MD | 4.9 mi |
20667 | Park Hall, MD | 5.3 mi |
20634 | Great Mills, MD | 5.7 mi |
20619 | California, MD | 6.5 mi |
20686 | Saint Marys City, MD | 6.9 mi |
20657 | Lusby, MD | 7.1 mi |
20620 | Callaway, MD | 7.2 mi |
20692 | Valley Lee, MD | 8.8 mi |
Find every ZIP code within 10 miles of 20670 →
Questions about this ZIP code
Where is ZIP code 20670?
20670 is in Patuxent River, Maryland, in St. Mary's County, part of the Lexington Park, MD metropolitan area. Its published point location is 38.2848, -76.4077.
What county is 20670 in?
20670 lies in St. Mary's County.
What area code is 20670?
Patuxent River uses area codes 410, 667 and 443, from NANPA's telephone records.
What time zone is 20670 in?
20670 uses America/New_York.
How many people live in 20670?
About 2,046 people live in ZIP code 20670, in 439 households, at 218.9 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 20670?
$70,371 a year, against $103,678 across Maryland.
What ZIP codes are near 20670?
The closest are 20653 (3.5 mi), 20688 (4.2 mi), 20629 (4.9 mi), 20667 (5.3 mi) and 20634 (5.7 mi).
Is 20670 a PO Box ZIP code?
20670 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “20670 ZIP Code — Patuxent River, Maryland (St. Mary's County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20670
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/20670.json Underlying data is public domain or openly licensed — sources, vintages and licences.