ZIP Code 20851, Maryland
ZIP Code 20851 profile, demographic data, and geographic information.
ZCTA5 20851 is a 5-digit ZIP Code area located in Montgomery County, Maryland. As of official census estimates, it has a reported population of 14,946. The land area covers 2.54 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 14,946 | ±1,180 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 38.6 yrs | ±3.2 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 5,155 | ±403 | 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 | 5,338 | ±378 |
| Occupied Housing Units | 5,155 | ±403 |
| Vacant Housing Units | 183 | ±136 |
| Median Home Value | $568,900 | ±$21,681 |
| Median Gross Rent | $2,043 | ±$155 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $126,411 | ±$14,826 |
| Per Capita Income | $51,567 | ±$4,607 |
| Poverty Rate | 9.1% | ±2.8% |
| Population Below Poverty Level | 1,362 | ±428 |
| Unemployment Rate | 3% | ±1.3% |
| Civilian Labor Force, Employed | 8,969 | ±889 |
| Broadband Internet Rate | 92.8% | ±9.4% |
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: 1,082,273 (2024)
ID: 190427
|
County | Official County Government |
Contact: COUNTY EXECUTIVE
101 MONROE ST, FL 2, ROCKVILLE MD 20850-2580
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 06-08 | Silver Spring, MD | |
| Regular School Nearby | PK-05 | Adelphi, MD | |
| Regular School Nearby | 09-12 | Kensington, MD | |
| Regular School Nearby | PK-06 | Reston, VA | |
| Regular School Nearby | PK-05 | Arlington, VA | |
| Alternative School Nearby | 06-12 | Rockville, MD | |
| Regular School Nearby | PK-05 | Washington, DC | |
| Regular School Nearby | 09-12 | Washington, DC | |
| Regular School Nearby | PK | Washington, DC | |
| Regular School Nearby | PK | Washington, DC |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Omega Studios' School of Applied Recording Arts & Sciences
|
College Vocational | 1.0 mi away | 12712 Rock Creek Mill Rd #A14, Rockville, MD, 20852 |
3012309100
|
|
TWINBROOK BRANCH
|
Library | 0.5 mi away | 202 MEADOWHALL DR., ROCKVILLE, MD, 20851 |
(240) 777-0240
|
|
Hair Expressions Academy
|
College Vocational | 1.2 mi away | 12450 Parklawn Dr 2nd fl, Rockville, MD, 20852 |
3019848182
|
|
ASPEN HILL BRANCH
|
Library | 1.7 mi away | 4407 ASPEN HILL RD., ROCKVILLE, MD, 20853 |
(240) 773-9410
|
|
Montgomery College
|
College | 2.5 mi away | 51 Mannakee Street, Rockville, MD, 20850 |
2405675000
|
|
ROCKVILLE MEMORIAL BRANCH
|
Library | 1.7 mi away | 21 MARYLAND AVENUE, ROCKVILLE, MD, 20850 |
(240) 777-0140
|
|
SANS Technology Institute
|
College | 2.6 mi away | 11200 Rockville Pike, Suite 200, North Bethesda, MD, 20852 |
3016547267
|
|
DAVIS BRANCH
|
Library | 3.8 mi away | 6400 DEMOCRACY BLVD., BETHESDA, MD, 20817 |
(240) 777-0922
|
|
Yeshiva College of the Nations Capital
|
College | 5.4 mi away | 1216 Arcola Ave, Silver Spring, MD, 20902 |
30164970771526
|
|
KENSINGTON PARK BRANCH
|
Library | 4.0 mi away | 4201 KNOWLES AVE, KENSINGTON, MD, 20895 |
(240) 773-9515
|
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 ROCKVILLE 1 NE, MD US, located 2.2 miles from ZCTA5 20851. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 42.2° | 26.9° | 34.5° | 3.11" | — |
| February | 45.0° | 28.4° | 36.7° | 2.60" | — |
| March | 53.7° | 35.9° | 44.8° | 3.66" | — |
| April | 65.9° | 45.6° | 55.7° | 3.23" | — |
| May | 74.3° | 54.9° | 64.6° | 3.55" | — |
| June | 82.2° | 63.6° | 72.9° | 3.96" | — |
| July | 87.1° | 68.8° | 78.0° | 3.98" | — |
| August | 84.9° | 67.0° | 75.9° | 3.05" | — |
| September | 77.5° | 60.0° | 68.7° | 4.01" | — |
| October | 65.9° | 48.0° | 57.0° | 3.52" | — |
| November | 55.7° | 38.2° | 46.9° | 3.27" | — |
| December | 46.0° | 30.9° | 38.5° | 3.38" | — |
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 |
|---|---|---|---|
| Rockville city | City | 1.9 mi | — |
| Aspen Hill CDP | CDP | 2.3 mi | — |
| Derwood CDP | CDP | 2.9 mi | — |
| North Bethesda CDP | CDP | 2.9 mi | — |
| Garrett Park town | Town | 3.3 mi | — |
| Leisure World CDP | CDP | 3.3 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 20851. • 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.