20121 ZIP Code — Centreville, VA
Fairfax County, Virginia
ZIP code 20121 is located in Centreville, Virginia, within Fairfax County. It covers approximately 8.66 square miles and serves a population of 27,428 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 703/571.
About ZIP code 20121
The housing stock consists of a mix of housing types. Most homes were built in the 1990s, giving the area an established character. Median home value is $468,600. Owner-occupancy sits near the national average at 71%.
Median household income is $128,682. The poverty rate of 7% is below the national average.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 31 minutes is near the national average.
Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.
27,428
population
8.66
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
20121 ZIP code map
Cities in ZIP code 20121
Below are the cities the US Postal Service accepts for ZIP code 20121. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Centreville | Preferred |
Nearby ZIP codes
22036 Fairfax (1.9 mi)
20120 Centreville (3.1 mi)
20109 Manassas (4.4 mi)
20111 Manassas (4.6 mi)
20124 Clifton (4.8 mi)
20151 Chantilly (4.9 mi)
20110 Manassas (5 mi)
20152 Chantilly (5.9 mi)
20143 Catharpin (6.1 mi)
22033 Fairfax (6.3 mi)
22030 Fairfax (6.6 mi)
20136 Bristow (7.2 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 27,428 |
| Population density | 3,167 / sq mi |
| State FIPS | 51 |
| County FIPS | 059 |
| Geography | |
|---|---|
| Land area | 8.66 sq mi |
| Water area | 0.52 sq mi |
| Latitude | 38.8159 |
| Longitude | -77.4608 |
| Timezone | Eastern (ET) |
| Area code | 703/571 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 17.4% | 16.6% | 32.9% |
| $50k – $100k | 28.5% | 22.2% | 29.2% |
| $100k – $200k | 37.8% | 34.9% | 26.3% |
| Over $200k | 16.4% | 26.4% | 11.6% |
Demographics & statistics
27,428
Population
3,167
People per sq mi
35.2
Median age
$128,682
Median household income
$52,276
Per capita income
$468,600
Median home value
$2,128
Median monthly rent
71.0%
Home ownership
6.7%
Poverty rate
3.4%
Unemployment
7,115
Housing units
54.3%
Bachelor's or higher
Age distribution
Male
Female
853
Under 5
823
1,020
5–9
984
878
10–14
847
889
15–19
857
831
20–24
802
2,465
25–34
2,377
2,284
35–44
2,202
2,093
45–54
2,018
880
55–59
849
666
60–64
642
817
65–74
787
201
75–84
194
86
85+
83
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 6,381 | 23.3% |
| 18 and over | 21,047 | 76.7% |
| 65 and over | 2,168 | 7.9% |
| Median age | 35.2 years | |
Race & ethnicity
White
40.8%
Asian
24.2%
Hispanic or Latino
11.9%
Two or more races
10.6%
Black or African American
7.3%
Other race
5%
American Indian / Alaska Native
0.2%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 12,697 | 40.8% |
| Asian | 7,522 | 24.2% |
| Hispanic or Latino | 3,689 | 11.9% |
| Two or more races | 3,310 | 10.6% |
| Black or African American | 2,267 | 7.3% |
| Other race | 1,549 | 5% |
| American Indian / Alaska Native | 51 | 0.2% |
| Native Hawaiian / Pacific Islander | 32 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 17.4% | 16.6% | 32.9% |
| $50k – $100k | 28.5% | 22.2% | 29.2% |
| $100k – $200k | 37.8% | 34.9% | 26.3% |
| Over $200k | 16.4% | 26.4% | 11.6% |
Under $10k
2.3%
$10k–$15k
0.6%
$15k–$25k
2.9%
$25k–$35k
2.1%
$35k–$50k
4.6%
$50k–$75k
9.8%
$75k–$100k
13.3%
$100k–$150k
25.4%
$150k–$200k
16.2%
$200k+
22.8%
| Range | % of households |
|---|---|
| Under $10k | 2.3% |
| $10k–$15k | 0.6% |
| $15k–$25k | 2.9% |
| $25k–$35k | 2.1% |
| $35k–$50k | 4.6% |
| $50k–$75k | 9.8% |
| $75k–$100k | 13.3% |
| $100k–$150k | 25.4% |
| $150k–$200k | 16.2% |
| $200k+ | 22.8% |
| Median income | $128,682 |
Housing
Home values
Under $50k
2.1%
$50k–$100k
0.1%
$150k–$200k
1.7%
$200k–$300k
8.7%
$300k–$500k
50.2%
$500k–$1M
36.5%
$1M+
0.7%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $468,600 |
| Median rent / month | $2,128 |
| Owner occupied | 71.0% |
| Renter occupied | 29.0% |
| Vacant | 3.1% |
| Single-family detached | 19.3% |
| Large apartment buildings | 2.6% |
| Mobile homes | 0.0% |
| Median rooms | 5.8 |
| Avg household size (owned) | 2.90 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 2.6% |
| 2000–2009 | 9.7% |
| 1990–1999 | 39.1% |
| 1980–1989 | 37.6% |
| 1970–1979 | 8.8% |
| 1960–1969 | 1.3% |
| 1950–1959 | 0.2% |
| 1940–1949 | 0.0% |
| 1939 or earlier | 0.7% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.1% |
| 1 bedroom | 7.9% |
| 2 bedrooms | 25.9% |
| 3 bedrooms | 45.2% |
| 4 bedrooms | 15.6% |
| 5+ bedrooms | 4.3% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 2.2% |
| 1 vehicle | 31.0% |
| 2 vehicles | 45.3% |
| 3 or more | 21.5% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 53.4% |
| Electricity | 45.0% |
| Propane / LP gas | 1.3% |
| Fuel oil | 0.2% |
| No fuel used | 0.1% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 5,170 | 53.9% |
| Cohabiting couple | 403 | 4.2% |
| Male householder, no spouse | 1,625 | 16.9% |
| Female householder, no spouse | 2,397 | 25.0% |
| Households with children under 18 | 3,778 | 39.4% |
| Households with seniors (65+) | 1,615 | 16.8% |
| Average household size | 2.86 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 34.5% | 28.0% |
| Married | 54.5% | 52.8% |
| Separated | 1.7% | 2.3% |
| Widowed | 0.6% | 5.8% |
| Divorced | 8.8% | 11.1% |
Education
Less than 9th grade
2.6%
Some HS, no diploma
3.2%
HS graduate
16.3%
Some college, no degree
15.9%
Associate's degree
7.6%
Bachelor's degree
35.8%
Graduate / professional
18.5%
| Metric | % |
|---|---|
| HS diploma or higher | 94.2% |
| Bachelor's or higher | 54.3% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 201 | 2.7% |
| Kindergarten | 478 | 6.4% |
| Elementary school | 3,052 | 40.6% |
| High school | 1,263 | 16.8% |
| College / grad school | 2,530 | 33.6% |
Employment
Industry of employment
Education & healthcare
22.2%
Professional & management
19.9%
Public administration
10.6%
Retail trade
9.4%
Arts, food & hospitality
7.4%
Finance & real estate
6.9%
Construction
5.7%
Other services
5.1%
Transportation & utilities
4.5%
Manufacturing
3.8%
Information
2.9%
Wholesale trade
1.7%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 53.0% |
| Service | 16.4% |
| Sales & office | 18.3% |
| Natural resources & construction | 5.4% |
| Production & transportation | 6.9% |
Employment type
| Type | % |
|---|---|
| Private sector | 72.5% |
| Government | 22.6% |
| Self-employed | 4.8% |
| Unpaid family workers | 0.1% |
Commute
| Method | % |
|---|---|
| Drive alone | 72.2% |
| Carpool | 7.3% |
| Public transit | 1.7% |
| Walk | 1.3% |
| Work from home | 16.1% |
| Other means | 1.4% |
| Avg commute (minutes) | 31.1 |
Poverty
All people
6.7%
Under 18 years
12.4%
18 and over
5.0%
Married-couple families
2.5%
Female-led households
11.8%
Income support
| Source | % of households |
|---|---|
| Social Security | 15.3% |
| Retirement income | 14.8% |
| Supplemental Security | 2.6% |
| Cash public assistance | 2.0% |
| Food stamps / SNAP | 5.0% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 21.8% |
| High blood pressure | 21.7% |
| High cholesterol | 25.5% |
| Diabetes | 6.5% |
| Heart disease | 2.6% |
| Stroke | 1.4% |
| Asthma | 7.9% |
| Arthritis | 13.8% |
| Kidney disease | 1.5% |
| Pulmonary disease | 2.9% |
| Cancer | 3.4% |
| Behavior / access | % |
|---|---|
| Smoking | 10.9% |
| Binge drinking | 17.5% |
| No physical activity | 16.0% |
| Less than 7 hrs sleep | 33.5% |
| Depression | 16.1% |
| Fair or poor health | 8.7% |
| Poor mental health | 12.0% |
| Poor physical health | 5.9% |
| No health insurance | 12.5% |
| Visited doctor (checkup) | 69.3% |
| Visited dentist | 71.8% |
| Cholesterol screening | 89.4% |
| Teeth loss | 6.2% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 1,013 | 4.8% |
| Disability | % |
|---|---|
| Any disability | 5.2% |
| Under 18 | 1.8% |
| 18–64 years | 4.4% |
| 65 and over | 22.2% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 82.6% |
| Public insurance | 14.7% |
| No insurance | 8.5% |
| Uninsured under 19 | 10.1% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 25,752 | 93.9% |
| Spanish | 4,431 | 17.2% |
| Other Indo-European | 1,142 | 4.4% |
| Asian & Pacific Islander | 540 | 2.1% |
| Other languages | 2,431 | 9.4% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 17,408 | 63.5% |
| Born in same state | 16,538 | 60.3% |
| Born in different state | 9,445 | 34.4% |
| Foreign born | 870 | 3.2% |
| Naturalized citizen | 10,020 | 36.5% |
| Not a US citizen | 6,650 | 66.4% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 1,768 | 6.4% |
| French | 1,622 | 5.9% |
| Arab | 1,008 | 3.7% |
| English | 175 | 0.6% |
| Polish | 77 | 0.3% |
| Ancestry | Count | % |
|---|---|---|
| Irish | 65 | 0.2% |
| German | 60 | 0.2% |
| Dutch | 41 | 0.1% |
| Norwegian | 38 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 35.0% |
| Internet access | 98.8% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 20121
What city is ZIP code 20121 in?
ZIP code 20121 is primarily assigned to Centreville, Virginia.
What county is ZIP code 20121 in?
ZIP code 20121 falls within Fairfax County, Virginia.
How educated is the population of ZIP code 20121?
54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the median household income in ZIP code 20121?
The median household income in ZIP code 20121 is $128,682, above the national median of ~$75,000.
What is the typical home value in ZIP code 20121?
The median home value in ZIP code 20121 is $468,600.
What is the population of ZIP code 20121?
ZIP code 20121 has an estimated population of 27,428 residents, with a density of 3,167 people per square mile.
What timezone is ZIP code 20121 in?
ZIP code 20121 observes the EST timezone.