ZIP Code 20640, Maryland
ZIP Code 20640 profile, demographic data, and geographic information.
ZCTA5 20640 is a 5-digit ZIP Code area located in Charles County, Maryland. As of official census estimates, it has a reported population of 10,685. The land area covers 41.72 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 10,685 | ±849 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 38.8 yrs | ±1.7 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 4,163 | ±386 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 4,501 | ±414 |
| Occupied Housing Units | 4,163 | ±386 |
| Vacant Housing Units | 338 | ±163 |
| Median Home Value | $324,600 | ±$22,053 |
| Median Gross Rent | $1,529 | ±$440 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $100,593 | ±$14,303 |
| Per Capita Income | $49,439 | ±$3,983 |
| Poverty Rate | 8.3% | ±3.2% |
| Population Below Poverty Level | 862 | ±343 |
| Unemployment Rate | 4.2% | ±2.3% |
| Civilian Labor Force, Employed | 5,406 | ±591 |
| Broadband Internet Rate | 88.2% | ±3.7% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 174,478 (2024)
ID: 166364
|
County | Official County Government |
Contact: COUNTY COMMISSIONER PRESIDENT
PO BOX 2150, LA PLATA MD 20646-2150
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | PK-05 | Dumfries, VA | |
| Regular School Nearby | KG-08 | Accokeek, MD | |
| Regular School Nearby | KG-05 | Stafford, VA | |
| Regular School Nearby | KG-05 | Stafford, VA | |
| Regular School Nearby | PK-05 | Woodbridge, VA | |
| Regular School Nearby | PK-05 | Manassas, VA | |
| Regular School Nearby | PK-05 | Woodbridge, VA | |
| Regular School Nearby | PK-05 | Woodbridge, VA | |
| Regular School Nearby | PK-05 | Manassas, VA | |
| Regular School Nearby | PK-05 | Waldorf, MD |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Paul Mitchell the School-Woodbridge
|
College Vocational | 9.0 mi away | 14445 Potomac Mills Road, Woodbridge, VA, 22192 |
7034982009
|
|
DUMFRIES LIBRARY
|
Library | 7.5 mi away | 18115 TRIANGLE SHOPPING CENTER, DUMFRIES, VA, 22026 |
(703) 792-5678
|
|
College of Southern Maryland
|
College | 10.6 mi away | 8730 Mitchell Rd, La Plata, MD, 20646-0910 |
3019342251
|
|
POTOMAC LIBRARY
|
Library | 8.5 mi away | 2201 OPITZ BLVD, WOODBRIDGE, VA, 22191 |
(703) 792-8330
|
|
Agora University
|
College | 17.5 mi away | 9253 Old Keene Mill Road, Burke, VA, 22015 |
8664624672
|
|
POTOMAC BRANCH
|
Library | 9.1 mi away | 3225 RUTH B. SWAN DRIVE, INDIAN HEAD, MD, 20640 |
(301) 375-7375
|
|
CET-Alexandria
|
College Vocational | 19.3 mi away | 6295 Edsall Rd, Plaza 500, Ste. 220, Alexandria, VA, 22312 |
4082877924
|
|
MONTCLAIR LIBRARY
|
Library | 10.2 mi away | 5029 WATERWAY DRIVE, DUMFRIES, VA, 22025 |
(703) 792-8740
|
|
Washington University of Science and Technology
|
College | 20.1 mi away | 2900 Eisenhower Ave, Alexandria, VA, 22314-5202 |
7039412020
|
|
DALE CITY LIBRARY
|
Library | 11.1 mi away | 4249 DALE BLVD, DALE CITY, VA, 22193 |
(703) 792-5670
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at QUANTICO MCAS, VA US, located 5.6 miles from ZCTA5 20640. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 44.8° | 28.3° | 36.6° | 2.66" | 3.5" |
| February | 48.3° | 30.4° | 39.4° | 2.36" | 5.8" |
| March | 56.3° | 37.1° | 46.7° | 3.58" | 1.4" |
| April | 67.8° | 47.1° | 57.5° | 3.16" | 0.0" |
| May | 75.5° | 56.8° | 66.1° | 3.63" | 0.0" |
| June | 83.7° | 65.9° | 74.8° | 3.53" | 0.0" |
| July | 88.0° | 70.7° | 79.3° | 4.64" | 0.0" |
| August | 86.1° | 69.0° | 77.6° | 4.24" | 0.0" |
| September | 79.5° | 62.1° | 70.8° | 3.43" | 0.0" |
| October | 68.8° | 49.7° | 59.2° | 3.33" | 0.0" |
| November | 57.8° | 39.3° | 48.6° | 3.14" | 0.0" |
| December | 48.6° | 32.2° | 40.4° | 3.33" | 1.7" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Quantico town | Town | 4.8 mi | — |
| Cherry Hill CDP | CDP | 5.4 mi | — |
| Indian Head town | Town | 5.5 mi | — |
| Potomac Heights CDP | CDP | 6.2 mi | — |
| Quantico Base CDP | CDP | 6.4 mi | — |
| Triangle CDP | CDP | 6.5 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 20640. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.