ZIP Code 20121, Virginia
ZIP Code 20121 profile, demographic data, and geographic information.
ZCTA5 20121 is a 5-digit ZIP Code area located in Fairfax County, Virginia. As of official census estimates, it has a reported population of 27,788. The land area covers 8.66 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 27,788 | ±1,634 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 36.1 yrs | ±1.3 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 9,891 | ±491 | 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 | 10,057 | ±482 |
| Occupied Housing Units | 9,891 | ±491 |
| Vacant Housing Units | 166 | ±112 |
| Median Home Value | $520,200 | ±$28,782 |
| Median Gross Rent | $2,289 | ±$53 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $129,947 | ±$10,282 |
| Per Capita Income | $55,491 | ±$3,591 |
| Poverty Rate | 8.8% | ±2.8% |
| Population Below Poverty Level | 2,436 | ±797 |
| Unemployment Rate | 3.4% | ±1% |
| Civilian Labor Force, Employed | 16,530 | ±1,027 |
| Broadband Internet Rate | 98.5% | ±1.2% |
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: 1,160,925 (2024)
ID: 114514
|
County | Official County Government |
Contact: CHAIRPERSON
12000 GOVERNMENT CENTER PKWY, STE 530, FAIRFAX VA 22035-0001
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | PK-05 | Dumfries, VA | |
| Alternative School Nearby | N | Burke, VA | |
| Alternative School Nearby | N | Centreville, VA | |
| Alternative School Nearby | N | Centerville, VA | |
| Regular School Nearby | PK-05 | Aldie, VA | |
| Regular School Nearby | PK-06 | Reston, VA | |
| Alternative School Nearby | N | Midland, VA | |
| Regular School Nearby | 09-12 | Annandale, VA | |
| Regular School Nearby | PK-05 | Annandale, VA | |
| Regular School Nearby | PK-05 | Woodbridge, VA |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Aviation Institute of Maintenance-Manassas
|
College | 3.0 mi away | 10640 Davidson Place, Manassas, VA, 20109 |
7032575515
|
|
CENTREVILLE REGIONAL LIBRARY
|
Library | 2.2 mi away | 14200 ST. GERMAINE DR., CENTREVILLE, VA, 20121 |
(703) 830-2223
|
|
George Mason University
|
College | 8.5 mi away | 4400 University Dr, Fairfax, VA, 22030-4444 |
7039931000
|
|
CENTRAL LIBRARY
|
Library | 2.9 mi away | 8601 MATHIS AVENUE, MANASSAS, VA, 20110 |
(703) 792-8360
|
|
Ascent College
|
College | 8.7 mi away | 14525 John Marshall Hwy., Gainesville, VA, 20155 |
7037532791
|
|
MANASSAS PARK CITY LIBRARY
|
Library | 3.3 mi away | 100 PARK CENTRAL PLAZA, SUITE 100, MANASSAS PARK, VA, 20111 |
(703) 335-8842
|
|
Agora University
|
College | 10.9 mi away | 9253 Old Keene Mill Road, Burke, VA, 22015 |
8664624672
|
|
BULL RUN LIBRARY
|
Library | 3.5 mi away | 8051 ASHTON AVENUE, MANASSAS, VA, 20109 |
(703) 792-4500
|
|
Divine Mercy University
|
College | 11.7 mi away | 45154 Underwood Lane, Sterling, VA, 20166 |
7034161441
|
|
MANASSAS CITY LIBRARY
|
Library | 5.1 mi away | 10104 DUMFRIES ROAD, MANASSAS, VA, 20110 |
(703) 792-8820
|
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 WASHINGTON DC DULLES AP, VA US, located 9.0 miles from ZCTA5 20121. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 42.6° | 25.2° | 33.9° | 2.94" | 6.9" |
| February | 46.1° | 26.7° | 36.4° | 2.61" | 7.0" |
| March | 54.8° | 33.6° | 44.2° | 3.50" | 3.9" |
| April | 66.8° | 43.2° | 55.0° | 3.47" | 0.1" |
| May | 75.0° | 53.0° | 64.0° | 4.72" | 0.0" |
| June | 83.1° | 61.9° | 72.5° | 4.30" | 0.0" |
| July | 87.6° | 66.8° | 77.2° | 4.15" | 0.0" |
| August | 86.3° | 65.2° | 75.7° | 3.53" | 0.0" |
| September | 79.3° | 57.9° | 68.6° | 3.94" | 0.0" |
| October | 67.8° | 45.3° | 56.6° | 3.65" | 0.0" |
| November | 56.5° | 35.6° | 46.0° | 3.13" | 0.3" |
| December | 46.5° | 29.0° | 37.7° | 3.30" | 2.8" |
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 |
|---|---|---|---|
| Yorkshire CDP | CDP | 1.7 mi | — |
| Loch Lomond CDP | CDP | 2.3 mi | — |
| Bull Run CDP | CDP | 2.4 mi | — |
| Centreville CDP | CDP | 2.4 mi | — |
| Sudley CDP | CDP | 2.7 mi | — |
| Manassas Park city | City | 3.1 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 20121. • 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.