ZIP code 20686
Where is ZIP code 20686?
Saint Marys City, Maryland
St. Mary's County · PO Box only ZIP code
ZIP code 20686 belongs to Saint Marys City, Maryland in St. Mary's County. 20686 is a PO Box only ZIP code: it is used for post office boxes at the Saint Marys City post office, not for street addresses. It is in the Eastern Time zone and uses area codes 227, 240 and 301. About 971 people live in the 20686 area. The closest ZIP codes are 20667 (Park Hall, 2.2 mi north), 20630 (Drayden, 2.3 mi southwest) and 20684 (Saint Inigoes, 3.3 mi southeast).
| ZIP code | 20686 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Saint Marys City |
| Also accepted | Saint Marys, St Marys City |
| State | Maryland (MD) |
| County | St. Mary's County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301 |
| Coordinates | 38.1871, -76.4344 map |
| 3-digit prefix | 206 |
Population and income in 20686
| Population | 971 · lower than 74% of Maryland ZIP codes |
|---|---|
| People per square mile | 3,583 · higher than 86% of Maryland ZIP codes |
| Median age | 20.3 years · lower than 99% of Maryland ZIP codes |
| Men / women | 35% / 65% |
| Income per person | $4,431 |
| Bachelor’s degree or higher | 100% of adults 25+ |
| Housing units | 0 |
| Households | 0 |
| Land area | 0.27 sq mi (plus 1.54 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20686. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20686
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20667 | Park Hall, MD | 2.2 mi N | Standard |
| 20630 | Drayden, MD | 2.3 mi SW | Standard |
| 20684 | Saint Inigoes, MD | 3.3 mi SE | Standard |
| 20692 | Valley Lee, MD | 4 mi W | Standard |
| 20653 | Lexington Park, MD | 4.4 mi N | Standard |
| 20628 | Dameron, MD | 4.8 mi SE | Standard |
| 20674 | Piney Point, MD | 5 mi SW | Standard |
| 20620 | Callaway, MD | 5.5 mi NW | Standard |
| 20690 | Tall Timbers, MD | 5.9 mi W | Standard |
| 20680 | Ridge, MD | 5.9 mi SE | Standard |
| 20670 | Patuxent River, MD | 6.4 mi N | Standard |
| 20634 | Great Mills, MD | 6.5 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20686 or measure the distance to another ZIP code.
How to address mail to 20686
PO BOX 123
SAINT MARYS CITY MD 20686
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts SAINT MARYS and ST MARYS CITY as the city name for 20686. Adding the 4-digit ZIP+4 code (20686-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 20686?
- 20686 is a Saint Marys City, Maryland ZIP code. Saint Marys and St Marys City are also accepted as the city name.
- What county is 20686 in?
- ZIP code 20686 is in St. Mary's County, Maryland.
- What time zone is ZIP code 20686 in?
- 20686 is in the Eastern Time zone (America/New_York).
- What area code is 20686?
- Phone numbers in ZIP code 20686 use area codes 227, 240 and 301.
- What is the population of ZIP code 20686?
- About 971 people live in ZIP code 20686, according to the Census Bureau’s American Community Survey (2020–2024).
- Can I use 20686 for a street address?
- No. 20686 is only for PO Boxes. Street addresses in Saint Marys City use another ZIP code.
- What ZIP codes are near 20686?
- The nearest ZIP codes to 20686 are 20667 (Park Hall, 2.2 miles), 20630 (Drayden, 2.3 miles), 20684 (Saint Inigoes, 3.3 miles) and 20692 (Valley Lee, 4 miles).