ZIP code 20646: La Plata, MD
20646 is a ZIP code in La Plata, Maryland, mainly in Charles County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metro area. About 21,400 people live here.
- Population
- 21,400
- Median household income
- $131,974
- Typical home value
- $472,900-0.6% in 12 months
- Median rent
- $1,541gross, per month
- Median age
- 42.9
- Homeowners
- 86.5%of occupied homes
Shaded: ZIP code 20646's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 20646 details
| City | La Plata |
|---|---|
| State | Maryland |
| County | Charles County |
| Metro area | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 79.8 sq mi, plus 0.7 sq mi of water |
| Population density | 268 people per sq mi |
| Bachelor's degree or higher | 34.9% of adults 25+ |
| Average commute | 38.8 minutes |
| Center coordinates | 38.52065, -76.99992 |
Median rent in 20646 by bedrooms
| Size | Median gross rent |
|---|---|
| 1 bedroom | $316/mo |
| 2 bedrooms | $1,600/mo |
| 3 bedrooms | $1,819/mo |
| 4 bedrooms | $2,890/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 20646
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 20604 | Waldorf, MD | 1.3 mi | — |
| 20677 | Port Tobacco, MD | 2.7 mi | 2,088 |
| 20675 | Pomfret, MD | 4.4 mi | 1,796 |
| 20611 | Bel Alton, MD | 4.6 mi | 1,219 |
| 20695 | White Plains, MD | 4.8 mi | 16,407 |
| 20693 | Welcome, MD | 6.4 mi | 1,496 |
| 20602 | Waldorf, MD | 7.1 mi | 28,331 |
| 20632 | Faulkner, MD | 7.2 mi | 485 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 20646?
A typical home in ZIP code 20646 is worth about $472,900 (Zillow Home Value Index). The median household here earns $131,974 a year. See what buying here would cost per month, with Maryland average taxes and insurance filled in.
Monthly payment for a $472,900 homeWhat can a $131,974 income afford?Rental property numbers
About ZIP code 20646
What city is ZIP code 20646?
ZIP code 20646 is in La Plata, MD, in Charles County.
What county is ZIP code 20646 in?
20646 is mainly in Charles County, Maryland.
What is the population of ZIP code 20646?
About 21,400 people live in ZIP code 20646, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 20646 in?
20646 is in Eastern Time (UTC−5). It observes daylight saving time.