ZIP code 20659
Where is ZIP code 20659?
Mechanicsville, Maryland
St. Mary's County · Standard ZIP code
ZIP code 20659 belongs to Mechanicsville, Maryland in St. Mary's County. 20659 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, 410, 443 and 667. About 24,324 people live in the 20659 area, where the median household income is $121,654. The closest ZIP codes are 20660 (Morganza, 4.1 mi southeast), 20622 (Charlotte Hall, 5.3 mi northwest) and 20656 (Loveville, 5.3 mi southeast).
| ZIP code | 20659 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Mechanicsville |
| Also accepted | Mechanicsvlle |
| State | Maryland (MD) |
| County | St. Mary's County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301, 410, 443, 667 |
| Coordinates | 38.4293, -76.7254 map |
| 3-digit prefix | 206 |
Population and income in 20659
| Population | 24,324 · higher than 76% of Maryland ZIP codes |
|---|---|
| People per square mile | 251 · lower than 60% of Maryland ZIP codes |
| Median age | 37.5 years · lower than 76% of Maryland ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $121,654 · higher than 62% of Maryland ZIP codes |
| Income per person | $51,368 |
| Below the poverty line | 7.5% |
| Bachelor’s degree or higher | 28% of adults 25+ |
| Median home value | $416,900 · lower than 51% of Maryland ZIP codes |
| Median rent | $1,527 a month |
| Housing units | 8,633 |
| Households | 8,300 (2.93 people on average) |
| Owners / renters | 89% / 11% |
| Land area | 97.01 sq mi (plus 9.49 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20659. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20659
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20660 | Morganza, MD | 4.1 mi SE | PO Box only |
| 20622 | Charlotte Hall, MD | 5.3 mi NW | Standard |
| 20656 | Loveville, MD | 5.3 mi SE | Standard |
| 20612 | Benedict, MD | 6.1 mi NE | PO Box only |
| 20624 | Clements, MD | 6.1 mi S | Standard |
| 20621 | Chaptico, MD | 6.3 mi SW | Standard |
| 20637 | Hughesville, MD | 7 mi NW | Standard |
| 20610 | Barstow, MD | 8.9 mi NE | PO Box only |
| 20615 | Broomes Island, MD | 9.6 mi E | Standard |
| 20678 | Prince Frederick, MD | 10.1 mi NE | Standard |
| 20609 | Avenue, MD | 10.2 mi S | Standard |
| 20617 | Bryantown, MD | 10.2 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20659 or measure the distance to another ZIP code.
How to address mail to 20659
123 MAIN ST
MECHANICSVILLE MD 20659
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts MECHANICSVLLE as the city name for 20659. Adding the 4-digit ZIP+4 code (20659-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 20659?
- 20659 is a Mechanicsville, Maryland ZIP code. Mechanicsvlle is also accepted as the city name.
- What county is 20659 in?
- ZIP code 20659 is in St. Mary's County, Maryland.
- What time zone is ZIP code 20659 in?
- 20659 is in the Eastern Time zone (America/New_York).
- What area code is 20659?
- Phone numbers in ZIP code 20659 use area codes 227, 240, 301, 410, 443 and 667.
- What is the population of ZIP code 20659?
- About 24,324 people live in ZIP code 20659, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 20659?
- The median household income in 20659 is $121,654 a year, higher than 62% of Maryland ZIP codes.
- What ZIP codes are near 20659?
- The nearest ZIP codes to 20659 are 20660 (Morganza, 4.1 miles), 20622 (Charlotte Hall, 5.3 miles), 20656 (Loveville, 5.3 miles) and 20612 (Benedict, 6.1 miles).