🇺🇸 United States ZIP Code

STANDARD

22030

Fairfax

ZIP Code 22030 is a standard zip code serving Fairfax, Fairfax, Virginia (VA), in Fairfax (city) County, United States. It has an estimated population of 55,066 with a median household income of $102,140. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Virginia (VA)
County: Fairfax (city)
City: Fairfax
Timezone: America/New_York

Coordinates

Latitude: 38.845800
Longitude: -77.324200

Geographic Details

Land Area: 18.87 mi²
Water Area: 0.09 mi²
Population Density: 2918.0 people per mi² (85th percentile)
Bounding Box: 38.877370°N, 38.794607°S, -77.269504°E, -77.404280°W

With 55,066 residents spread across 18.87 square miles, this area has a population density of 2918.0 people per square mile.

Demographics

55,066

Population

95th percentile

$102,140

Median Income

95th percentile

$479,700

Median Home Value

95th percentile

18.87 mi²

Land Area

The median household income in 22030 is $102,140, and the median home value is $479,700. This places the area in the top 25% nationally for household income.

Housing

19,487

Total Units

18,561

Occupied Units

95.2%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Fairfax, VA.

22031

Fairfax

22032

Fairfax

22033

Fairfax

22034

Fairfax

22035

Fairfax

22036

Fairfax

22037

Fairfax

22038

Fairfax

Similar ZIP Codes in Virginia

ZIP codes with similar median household income in Virginia.

23102

Maidens

$92,346

20119

Catlett

$111,339

20170

Herndon

$104,371

22310

Alexandria

$108,482

22302

Alexandria

$94,446

22715

Brightwood

$99,926

20175

Leesburg

$112,815

22003

Annandale

$93,823

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.