ZIP code 20620
Where is ZIP code 20620?
Callaway, Maryland
St. Mary's County · Standard ZIP code
ZIP code 20620 belongs to Callaway, Maryland in St. Mary's County. 20620 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 and 301. About 1,115 people live in the 20620 area, where the median household income is $165,972. The closest ZIP codes are 20692 (Valley Lee, 2.7 mi south), 20634 (Great Mills, 3.1 mi northeast) and 20653 (Lexington Park, 4 mi east).
| ZIP code | 20620 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Callaway |
| State | Maryland (MD) |
| County | St. Mary's County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301 |
| Coordinates | 38.2275, -76.521 map |
| 3-digit prefix | 206 |
Population and income in 20620
| Population | 1,115 · lower than 73% of Maryland ZIP codes |
|---|---|
| People per square mile | 260 · lower than 59% of Maryland ZIP codes |
| Median age | 41.6 years · lower than 52% of Maryland ZIP codes |
| Men / women | 52% / 48% |
| Median household income | $165,972 · higher than 88% of Maryland ZIP codes |
| Income per person | $57,323 |
| Below the poverty line | 4.9% |
| Bachelor’s degree or higher | 25% of adults 25+ |
| Median home value | $391,300 · lower than 56% of Maryland ZIP codes |
| Housing units | 456 |
| Households | 389 (2.86 people on average) |
| Owners / renters | 96% / 3.6% |
| Land area | 4.29 sq mi (plus 0.02 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20620. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20620
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20692 | Valley Lee, MD | 2.7 mi S | Standard |
| 20634 | Great Mills, MD | 3.1 mi NE | Standard |
| 20653 | Lexington Park, MD | 4 mi E | Standard |
| 20667 | Park Hall, MD | 4.3 mi E | Standard |
| 20690 | Tall Timbers, MD | 4.4 mi S | Standard |
| 20630 | Drayden, MD | 4.6 mi SE | Standard |
| 20619 | California, MD | 5.1 mi N | Standard |
| 20686 | Saint Marys City, MD | 5.5 mi SE | PO Box only |
| 20670 | Patuxent River, MD | 5.7 mi NE | Standard |
| 20674 | Piney Point, MD | 6.1 mi S | Standard |
| 20650 | Leonardtown, MD | 7.2 mi NW | Standard |
| 20635 | Helen, MD | 7.5 mi NW | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20620 or measure the distance to another ZIP code.
How to address mail to 20620
123 MAIN ST
CALLAWAY MD 20620
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (20620-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 20620?
- 20620 is a Callaway, Maryland ZIP code.
- What county is 20620 in?
- ZIP code 20620 is in St. Mary's County, Maryland.
- What time zone is ZIP code 20620 in?
- 20620 is in the Eastern Time zone (America/New_York).
- What area code is 20620?
- Phone numbers in ZIP code 20620 use area codes 227, 240 and 301.
- What is the population of ZIP code 20620?
- About 1,115 people live in ZIP code 20620, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 20620?
- The median household income in 20620 is $165,972 a year, higher than 88% of Maryland ZIP codes.
- What ZIP codes are near 20620?
- The nearest ZIP codes to 20620 are 20692 (Valley Lee, 2.7 miles), 20634 (Great Mills, 3.1 miles), 20653 (Lexington Park, 4 miles) and 20667 (Park Hall, 4.3 miles).