What city is 20124 in?

20124 is a Clifton, VA mailing address. By land area, 37% lies inside Union Mill, 8% lies inside Centreville and 1% lies inside Clifton; the rest is outside any Census-defined city or community.

What is the population of 20124?

About 14,375 people (±1,393), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 14,999.

What is the median household income in 20124?

$221,060 (±$22,427), compared with $93,170 for Virginia as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 20124?

11 USPS carrier routes with 4,948 residential and 60 business mailboxes (5,008 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 20124?

The closest, measured center to center: 20111 (3 mi, Buckhall), 20121 (4.4 mi, Bull Run), 22030 (4.7 mi, Braddock), 22039 (4.7 mi, Fairfax Station), 22035 (5.4 mi, Fair Oaks) and 20110 (5.7 mi, Manassas).

20124 ZIP Code, Clifton, VA

20124 is a ZIP code in Clifton, Virginia in Fairfax County. It covers 22 square miles of land. The closest ZIP codes are 20111, 20121 and 22030. 14,375 people live here in 4,825 households. With about 663 people per square mile it is lightly settled, and most homes are owner-occupied (92%). Median household income is $221,060, well above the Virginia median of $93,170; the median age is 47.7, older than most ZIP codes.

Quick facts

Mailing city: Clifton, VA
County: Fairfax County
Land area: 22 sq mi
Population: 14,375
Median household income: $221,060
Carrier routes: 11 (4,948 homes)

Key figures

Measure	Value
Residents	14,375
Households	4,825
Median household income	$221,060
Income per person	$93,604
Median age	47.7
Homeowners	92.4%
Median home value	$884,800
Median rent	$2,378
Bachelor's degree or higher	74.4%
Average commute (minutes)	31.9
Households with kids under 18	34.7%
Moved in the past year	5.8%
Below the poverty line	4.0%
Broadband internet	98.1%
Speak a non-English language at home	31.5%

Household income

% of households	Value
<$10K	2.5%
$10–15K	1.0%
$15–25K	0.5%
$25–35K	1.5%
$35–50K	2.5%
$50–75K	3.2%
$75–100K	5.8%
$100–150K	13.4%
$150–200K	12.7%
$200K+	56.8%

Age

% of all residents	Value
<10	11.1%
10–19	13.2%
20–24	5.2%
25–34	5.9%
35–44	11.4%
45–54	14.4%
55–64	18.8%
65–74	12.1%
75+	8.0%

Tenure

% of housing units	Value
Owned, with mortgage	68.6%
Owned outright	23.0%
Rented	7.4%
Vacant	0.9%

Type of building

% of housing units	Value
Detached house	80.7%
Townhome	15.7%
2–4 units	0.5%
5–19 units	2.7%
20+ units	0.2%
Mobile / other	0.3%

Businesses in 20124

306 business establishments with 2,302 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 97
Construction: 51
Real Estate and Rental and Leasing: 23
Administrative and Support and Waste Management and Remediation Services: 23
Accommodation and Food Services: 23
Health Care and Social Assistance: 19
Other Services (except Public Administration): 17
Retail Trade: 11

EDDM carrier routes

20124 has 11 USPS carrier routes with 4,948 residential and 60 business mailboxes. Open the EDDM route map.

Carrier routes in 20124

20124 has 11 USPS carrier routes (11 rural (R)) with 4,948 residential and 60 business mailboxes. Routes range from 338 homes (R081) to 590 homes (R089); the median route has 430 homes. The Census counted 4,825 households in 20124 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	9
500–749	2
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 20124 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route R090 — USPS business mailboxes 38, 383 homes
Route R082 — USPS business mailboxes 14, 424 homes
Route R092 — USPS business mailboxes 3, 391 homes
Route R088 — USPS business mailboxes 2, 581 homes
Route R089 — USPS business mailboxes 1, 590 homes

Select these 5 routes on the route map

Every carrier route in 20124

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R081	Rural	338	0	$200,001+	—	—	—
R082	Rural	424	14	$200,001+	—	—	—
R083	Rural	499	1	$200,001+	—	—	—
R084	Rural	404	0	$200,001+	—	—	—
R085	Rural	430	0	$200,001+	—	—	—
R086	Rural	456	0	$200,001+	—	—	—
R088	Rural	581	2	$200,001+	—	—	—
R089	Rural	590	1	$148,439	—	—	—
R090	Rural	383	38	$200,001+	—	—	—
R092	Rural	391	3	$200,001+	—	—	—
R095	Rural	452	1	$200,001+	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 20124 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

20111 — Buckhall CDP, VA (3 mi)
20121 — Bull Run CDP, VA (4.4 mi)
22030 — Braddock CDP, VA (4.7 mi)
22039 — Fairfax Station CDP, VA (4.7 mi)
22035 — Fair Oaks CDP, VA (5.4 mi)
20110 — Manassas city, VA (5.7 mi)
22015 — Burke CDP, VA (6 mi)
22032 — Kings Park West CDP, VA (6 mi)

Areas that include 20124

Where it ranks

Mail every home in 20124

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 20124, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 20124 in?: 20124 is a Clifton, VA mailing address. By land area, 37% lies inside Union Mill, 8% lies inside Centreville and 1% lies inside Clifton; the rest is outside any Census-defined city or community.
What county is 20124 in?: 20124 is in Fairfax County.
What is the population of 20124?: About 14,375 people (±1,393), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 14,999.
What is the median household income in 20124?: $221,060 (±$22,427), compared with $93,170 for Virginia as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 20124?: 11 USPS carrier routes with 4,948 residential and 60 business mailboxes (5,008 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 20124?: The closest, measured center to center: 20111 (3 mi, Buckhall), 20121 (4.4 mi, Bull Run), 22030 (4.7 mi, Braddock), 22039 (4.7 mi, Fairfax Station), 22035 (5.4 mi, Fair Oaks) and 20110 (5.7 mi, Manassas).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.