ZIP code 20818
Where is ZIP code 20818?
Cabin John, Maryland
Montgomery County · Standard ZIP code
ZIP code 20818 belongs to Cabin John, Maryland in Montgomery County. 20818 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 227, 240, 301, 571 and 703. About 1,539 people live in the 20818 area, where the median household income is $245,982. The closest ZIP codes are 20812 (Glen Echo, 0.9 mi east), 20817 (Bethesda, 1.1 mi north) and 20816 (Bethesda, 2.6 mi southeast).
| ZIP code | 20818 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Cabin John |
| State | Maryland (MD) |
| County | Montgomery County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301, 571, 703 |
| Coordinates | 38.9743, -77.1591 map |
| 3-digit prefix | 208 |
Population and income in 20818
| Population | 1,539 · lower than 69% of Maryland ZIP codes |
|---|---|
| People per square mile | 1,658 · higher than 72% of Maryland ZIP codes |
| Median age | 52.7 years · higher than 85% of Maryland ZIP codes |
| Men / women | 45% / 55% |
| Median household income | $245,982 · higher than 98% of Maryland ZIP codes |
| Income per person | $159,058 |
| Below the poverty line | 1.1% |
| Bachelor’s degree or higher | 86% of adults 25+ |
| Median home value | $1,335,100 · higher than 100% of Maryland ZIP codes |
| Housing units | 657 |
| Households | 593 (2.6 people on average) |
| Owners / renters | 95% / 4.7% |
| Land area | 0.93 sq mi (plus 0.42 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20818. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20818
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20812 | Glen Echo, MD | 0.9 mi E | Standard |
| 20817 | Bethesda, MD | 1.1 mi N | Standard |
| 20816 | Bethesda, MD | 2.6 mi SE | Standard |
| 22101 | Mc Lean, VA | 2.7 mi S | Standard |
| 22106 | Mc Lean, VA | 2.8 mi SW | PO Box only |
| 22107 | Mc Lean, VA | 3.1 mi SW | Unique |
| 22108 | Mc Lean, VA | 3.1 mi SW | Unique |
| 22109 | Mc Lean, VA | 3.1 mi SW | Unique |
| 20810 | Bethesda, MD | 3.2 mi E | Unique |
| 20811 | Bethesda, MD | 3.2 mi E | Unique |
| 20824 | Bethesda, MD | 3.2 mi E | PO Box only |
| 20814 | Bethesda, MD | 3.5 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20818 or measure the distance to another ZIP code.
How to address mail to 20818
123 MAIN ST
CABIN JOHN MD 20818
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (20818-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 20818?
- 20818 is a Cabin John, Maryland ZIP code.
- What county is 20818 in?
- ZIP code 20818 is in Montgomery County, Maryland.
- What time zone is ZIP code 20818 in?
- 20818 is in the Eastern Time zone (America/New_York).
- What area code is 20818?
- Phone numbers in ZIP code 20818 use area codes 227, 240, 301, 571 and 703.
- What is the population of ZIP code 20818?
- About 1,539 people live in ZIP code 20818, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 20818?
- The median household income in 20818 is $245,982 a year, higher than 98% of Maryland ZIP codes.
- What ZIP codes are near 20818?
- The nearest ZIP codes to 20818 are 20812 (Glen Echo, 0.9 miles), 20817 (Bethesda, 1.1 miles), 20816 (Bethesda, 2.6 miles) and 22101 (Mc Lean, 2.7 miles).