ZIP code 20646
Where is ZIP code 20646?
La Plata, Maryland
Charles County · Standard ZIP code
ZIP code 20646 belongs to La Plata, Maryland in Charles County. 20646 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 21,400 people live in the 20646 area, where the median household income is $131,974. The closest ZIP codes are 20604 (Waldorf, 1.1 mi south), 20677 (Port Tobacco, 3.5 mi southwest) and 20611 (Bel Alton, 3.7 mi south).
| ZIP code | 20646 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | La Plata |
| Also accepted | Dentsville |
| State | Maryland (MD) |
| County | Charles County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301 |
| Coordinates | 38.5257, -76.9865 map |
| 3-digit prefix | 206 |
Population and income in 20646
| Population | 21,400 · higher than 75% of Maryland ZIP codes |
|---|---|
| People per square mile | 268 · lower than 58% of Maryland ZIP codes |
| Median age | 42.9 years · higher than 56% of Maryland ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $131,974 · higher than 71% of Maryland ZIP codes |
| Income per person | $55,317 |
| Below the poverty line | 5.6% |
| Bachelor’s degree or higher | 35% of adults 25+ |
| Median home value | $450,200 · higher than 57% of Maryland ZIP codes |
| Median rent | $1,541 a month |
| Housing units | 8,332 |
| Households | 7,756 (2.68 people on average) |
| Owners / renters | 87% / 14% |
| Land area | 79.77 sq mi (plus 0.69 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20646. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20646
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20604 | Waldorf, MD | 1.1 mi S | PO Box only |
| 20677 | Port Tobacco, MD | 3.5 mi SW | Standard |
| 20611 | Bel Alton, MD | 3.7 mi S | Standard |
| 20675 | Pomfret, MD | 4.3 mi N | Standard |
| 20695 | White Plains, MD | 5 mi N | Standard |
| 20632 | Faulkner, MD | 6.1 mi S | Standard |
| 20602 | Waldorf, MD | 6.4 mi NE | Standard |
| 20693 | Welcome, MD | 7.1 mi SW | Standard |
| 20603 | Waldorf, MD | 7.2 mi N | Standard |
| 20617 | Bryantown, MD | 7.7 mi E | Standard |
| 20643 | Ironsides, MD | 8.9 mi W | PO Box only |
| 20616 | Bryans Road, MD | 9.4 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20646 or measure the distance to another ZIP code.
How to address mail to 20646
123 MAIN ST
LA PLATA MD 20646
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts DENTSVILLE as the city name for 20646. Avoid Laplata: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (20646-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 20646?
- 20646 is a La Plata, Maryland ZIP code. Dentsville is also accepted as the city name.
- What county is 20646 in?
- ZIP code 20646 is in Charles County, Maryland.
- What time zone is ZIP code 20646 in?
- 20646 is in the Eastern Time zone (America/New_York).
- What area code is 20646?
- Phone numbers in ZIP code 20646 use area codes 227, 240 and 301.
- What is the population of ZIP code 20646?
- About 21,400 people live in ZIP code 20646, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 20646?
- The median household income in 20646 is $131,974 a year, higher than 71% of Maryland ZIP codes.
- What ZIP codes are near 20646?
- The nearest ZIP codes to 20646 are 20604 (Waldorf, 1.1 miles), 20677 (Port Tobacco, 3.5 miles), 20611 (Bel Alton, 3.7 miles) and 20675 (Pomfret, 4.3 miles).