ZIP code 20688
Where is ZIP code 20688?
Solomons, Maryland
Calvert County · Standard ZIP code
ZIP code 20688 belongs to Solomons, Maryland in Calvert County. 20688 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 1,290 people live in the 20688 area, where the median household income is $102,950. The closest ZIP codes are 20629 (Dowell, 0.8 mi northeast), 20657 (Lusby, 3 mi northeast) and 20670 (Patuxent River, 3.8 mi southeast).
| ZIP code | 20688 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Solomons |
| Also accepted | Dowell |
| State | Maryland (MD) |
| County | Calvert County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301, 410, 443, 667 |
| Coordinates | 38.3293, -76.4651 map |
| 3-digit prefix | 206 |
Population and income in 20688
| Population | 1,290 · lower than 72% of Maryland ZIP codes |
|---|---|
| People per square mile | 1,120 · higher than 67% of Maryland ZIP codes |
| Median age | 63.8 years · higher than 95% of Maryland ZIP codes |
| Men / women | 40% / 60% |
| Median household income | $102,950 · lower than 53% of Maryland ZIP codes |
| Income per person | $58,614 |
| Below the poverty line | 0.2% |
| Bachelor’s degree or higher | 43% of adults 25+ |
| Median home value | $619,200 · higher than 84% of Maryland ZIP codes |
| Median rent | $3,222 a month |
| Housing units | 717 |
| Households | 651 (1.89 people on average) |
| Owners / renters | 49% / 52% |
| Land area | 1.15 sq mi (plus 2.26 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20688. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20688
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20629 | Dowell, MD | 0.8 mi NE | PO Box only |
| 20657 | Lusby, MD | 3 mi NE | Standard |
| 20670 | Patuxent River, MD | 3.8 mi SE | Standard |
| 20619 | California, MD | 4.1 mi SW | Standard |
| 20634 | Great Mills, MD | 4.6 mi S | Standard |
| 20636 | Hollywood, MD | 5.5 mi W | Standard |
| 20653 | Lexington Park, MD | 5.6 mi S | Standard |
| 20615 | Broomes Island, MD | 7.6 mi NW | Standard |
| 20620 | Callaway, MD | 7.7 mi SW | Standard |
| 20667 | Park Hall, MD | 7.8 mi S | Standard |
| 20635 | Helen, MD | 7.8 mi W | PO Box only |
| 20685 | Saint Leonard, MD | 8.7 mi N | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20688 or measure the distance to another ZIP code.
How to address mail to 20688
123 MAIN ST
SOLOMONS MD 20688
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts DOWELL as the city name for 20688. Adding the 4-digit ZIP+4 code (20688-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 20688?
- 20688 is a Solomons, Maryland ZIP code. Dowell is also accepted as the city name.
- What county is 20688 in?
- ZIP code 20688 is in Calvert County, Maryland.
- What time zone is ZIP code 20688 in?
- 20688 is in the Eastern Time zone (America/New_York).
- What area code is 20688?
- Phone numbers in ZIP code 20688 use area codes 227, 240, 301, 410, 443 and 667.
- What is the population of ZIP code 20688?
- About 1,290 people live in ZIP code 20688, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 20688?
- The median household income in 20688 is $102,950 a year, lower than 53% of Maryland ZIP codes.
- What ZIP codes are near 20688?
- The nearest ZIP codes to 20688 are 20629 (Dowell, 0.8 miles), 20657 (Lusby, 3 miles), 20670 (Patuxent River, 3.8 miles) and 20619 (California, 4.1 miles).