20171 ZIP Code — Herndon, VA

Fairfax County, Virginia

ZIP code 20171 is located in Herndon, Virginia, within Fairfax County. It covers approximately 11.62 square miles and serves a population of 51,081 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 703/571.

About ZIP code 20171

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 $731,500. Owner-occupancy sits near the national average at 57%.

The gap between median ($155,357) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 27 minutes is near the national average. Remote work is prevalent — 28% of workers work from home.

Educational attainment is high — 73% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 20171 reflects a community defined by a highly educated population and a high rate of remote workers.

51,081

population

11.62

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20171 ZIP code map

Cities in ZIP code 20171

Below are the cities the US Postal Service accepts for ZIP code 20171. Using any city not on this list may result in mail delivery delays.

City	Status
Herndon	Acceptable
Herndon	Preferred

Nearby ZIP codes

20192 Herndon (2 mi) 20191 Reston (2.2 mi) 22095 Herndon (3 mi) 22033 Fairfax (3.4 mi) 20190 Reston (3.5 mi) 20102 Dulles (3.7 mi) 22096 Reston (3.8 mi) 20196 Reston (3.8 mi) 20170 Herndon (4 mi) 22124 Oakton (4.1 mi) 20151 Chantilly (4.3 mi) 20194 Reston (4.7 mi)

Demographics updated 05/2026

Population
Total population	51,081
Population density	4,396 / sq mi
State FIPS	51
County FIPS	059

Geography
Land area	11.62 sq mi
Water area	0.08 sq mi
Latitude	38.9266
Longitude	-77.3912
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	11.5%	16.6%	32.9%
$50k – $100k	18.6%	22.2%	29.2%
$100k – $200k	34.9%	34.9%	26.3%
Over $200k	35.0%	26.4%	11.6%

Demographics & statistics

51,081

Population

4,396

People per sq mi

36.1

Median age

$155,357

Median household income

$71,891

Per capita income

$731,500

Median home value

$2,205

Median monthly rent

56.7%

Home ownership

4.2%

Poverty rate

3.1%

Unemployment

10,804

Housing units

72.9%

Bachelor's or higher

Age distribution

Male Female

1,484

Under 5

1,369

1,883

5–9

1,737

1,915

10–14

1,767

1,441

15–19

1,329

2,015

20–24

1,858

3,962

25–34

3,655

4,695

35–44

4,331

3,732

45–54

3,442

1,646

55–59

1,518

1,392

60–64

1,285

1,451

65–74

1,339

721

75–84

665

234

85+

215

← Male

Female →

Age summary

Group	Count	%
Under 18	12,192	23.9%
18 and over	38,889	76.1%
65 and over	4,625	9.1%
Median age	36.1 years

Race & ethnicity

White 44.8%

Asian 31.2%

Two or more races 8.5%

Black or African American 7.4%

Hispanic or Latino 6%

Other race 1.7%

Native Hawaiian / Pacific Islander 0.3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	24,358	44.8%
Asian	16,971	31.2%
Two or more races	4,597	8.5%
Black or African American	4,033	7.4%
Hispanic or Latino	3,235	6%
Other race	940	1.7%
Native Hawaiian / Pacific Islander	140	0.3%
American Indian / Alaska Native	42	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	11.5%	16.6%	32.9%
$50k – $100k	18.6%	22.2%	29.2%
$100k – $200k	34.9%	34.9%	26.3%
Over $200k	35.0%	26.4%	11.6%

Under $10k 1.1%

$10k–$15k 0.8%

$15k–$25k 2.3%

$25k–$35k 2.0%

$35k–$50k 5.1%

$50k–$75k 7.7%

$75k–$100k 9.3%

$100k–$150k 19.9%

$150k–$200k 14.0%

$200k+ 37.8%

Range	% of households
Under $10k	1.1%
$10k–$15k	0.8%
$15k–$25k	2.3%
$25k–$35k	2.0%
$35k–$50k	5.1%
$50k–$75k	7.7%
$75k–$100k	9.3%
$100k–$150k	19.9%
$150k–$200k	14.0%
$200k+	37.8%
Median income	$155,357

Housing

Home values

Under $50k 0.8%

$50k–$100k 0.3%

$100k–$150k 0.2%

$150k–$200k 0.2%

$200k–$300k 1.4%

$300k–$500k 11.7%

$500k–$1M 72.0%

$1M+ 13.5%

Housing overview

Metric	Value
Median home value	$731,500
Median rent / month	$2,205
Owner occupied	56.7%
Renter occupied	43.3%
Vacant	2.4%
Single-family detached	44.2%
Large apartment buildings	19.6%
Mobile homes	0.1%
Median rooms	6.1
Avg household size (owned)	3.02

Year built

Era	%
2020 or later	0.8%
2010–2019	12.8%
2000–2009	22.6%
1990–1999	27.8%
1980–1989	23.0%
1970–1979	11.1%
1960–1969	0.9%
1950–1959	0.3%
1940–1949	0.3%
1939 or earlier	0.5%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	14.9%
2 bedrooms	20.0%
3 bedrooms	22.7%
4 bedrooms	29.0%
5+ bedrooms	12.3%

Vehicles per household

Vehicles	% of households
No vehicle	3.5%
1 vehicle	33.6%
2 vehicles	41.9%
3 or more	21.0%

Heating fuel

Fuel type	%
Utility gas	54.9%
Electricity	42.4%
Propane / LP gas	1.6%
Fuel oil	0.7%
Wood	0.1%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	11,171	61.2%
Cohabiting couple	1,070	5.9%
Male householder, no spouse	3,012	16.5%
Female householder, no spouse	3,015	16.5%
Households with children under 18	7,076	38.7%
Households with seniors (65+)	3,156	17.3%
Average household size	2.79

Marital status

Status	Male	Female
Never married	33.1%	27.5%
Married	60.4%	60.3%
Separated	0.9%	2.3%
Widowed	1.0%	4.0%
Divorced	4.6%	5.9%

Education

Less than 9th grade 0.9%

Some HS, no diploma 1.2%

HS graduate 10.0%

Some college, no degree 10.5%

Associate's degree 4.5%

Bachelor's degree 36.0%

Graduate / professional 36.8%

Metric	%
HS diploma or higher	97.9%
Bachelor's or higher	72.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,055	7.9%
Kindergarten	789	5.9%
Elementary school	5,392	40.4%
High school	2,714	20.4%
College / grad school	3,381	25.4%

Employment

Industry of employment

Professional & management 34.3%

Education & healthcare 15.7%

Finance & real estate 8.8%

Public administration 8.5%

Arts, food & hospitality 6.2%

Retail trade 6.0%

Transportation & utilities 4.7%

Other services 4.4%

Information 3.8%

Construction 3.4%

Manufacturing 3.4%

Wholesale trade 0.8%

Occupation

Category	%
Management, business & arts	69.0%
Service	8.8%
Sales & office	14.8%
Natural resources & construction	2.9%
Production & transportation	4.5%

Employment type

Type	%
Private sector	77.7%
Government	16.2%
Self-employed	6.0%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	57.3%
Carpool	6.0%
Public transit	5.4%
Walk	1.4%
Work from home	28.2%
Other means	1.8%
Avg commute (minutes)	26.6

Poverty

All people 4.2%

Under 18 years 5.9%

18 and over 3.7%

Married-couple families 1.3%

Female-led households 28.7%

Income support

Source	% of households
Social Security	14.3%
Retirement income	17.2%
Supplemental Security	1.6%
Cash public assistance	1.1%
Food stamps / SNAP	2.6%

Health indicators

Condition	%
Obesity	20.3%
High blood pressure	22.7%
High cholesterol	28.0%
Diabetes	6.2%
Heart disease	2.8%
Stroke	1.4%
Asthma	7.5%
Arthritis	15.2%
Kidney disease	1.6%
Pulmonary disease	2.7%
Cancer	4.4%

Behavior / access	%
Smoking	8.4%
Binge drinking	16.5%
No physical activity	13.0%
Less than 7 hrs sleep	31.5%
Depression	15.0%
Fair or poor health	7.0%
Poor mental health	10.4%
Poor physical health	5.2%
No health insurance	8.5%
Visited doctor (checkup)	71.1%
Visited dentist	77.0%
Cholesterol screening	92.0%
Teeth loss	4.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,415	6.2%

Disability	%
Any disability	6.7%
Under 18	2.6%
18–64 years	5.5%
65 and over	26.4%

Health insurance coverage

Type	%
Private insurance	85.5%
Public insurance	14.6%
No insurance	7.1%
Uninsured under 19	4.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	48,228	94.4%
Spanish	4,875	10.1%
Other Indo-European	1,156	2.4%
Asian & Pacific Islander	935	1.9%
Other languages	1,828	3.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	33,777	66.1%
Born in same state	32,349	63.3%
Born in different state	14,114	27.6%
Foreign born	1,428	2.8%
Naturalized citizen	17,304	33.9%
Not a US citizen	8,225	47.5%

Ancestry

Ancestry	Count	%
Italian	4,667	9.1%
French	3,828	7.5%
Arab	1,380	2.7%
English	384	0.8%
Polish	349	0.7%

Ancestry	Count	%
Irish	317	0.6%
German	177	0.3%
Norwegian	170	0.3%
Dutch	98	0.2%

Technology access

Metric	% of households
Computer access	35.8%
Internet access	98.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 20171

What part of Herndon is ZIP code 20171?

ZIP code 20171 covers a portion of Herndon, Virginia, within Fairfax County.

What county is ZIP code 20171 in?

ZIP code 20171 falls within Fairfax County, Virginia.

How educated is the population of ZIP code 20171?

73% 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 20171?

The median household income in ZIP code 20171 is $155,357, above the national median of ~$75,000.

What is the typical home value in ZIP code 20171?

The median home value in ZIP code 20171 is $731,500.

What is the population of ZIP code 20171?

ZIP code 20171 has an estimated population of 51,081 residents, with a density of 4,397 people per square mile.

What timezone is ZIP code 20171 in?

ZIP code 20171 observes the EST timezone.