20148 ZIP Code, Ashburn, VA

20148 is a ZIP code in Ashburn, Virginia in Loudoun County. It covers 19 square miles of land. The closest ZIP codes are 20166, 20147 and 20105. 64,021 people live here in 20,839 households, which puts it among the most populous 1% of Virginia ZIP codes. At about 3,301 people per square mile it has suburban density, and most homes are owner-occupied (82%). Median household income is $233,494, well above the Virginia median of $93,170; 56% of households have children under 18.

Quick facts

Key figures

MeasureValue
Residents64,021
Households20,839
Median household income$233,494
Income per person$83,425
Median age38.7
Homeowners81.9%
Median home value$873,700
Median rent$2,690
Bachelor's degree or higher77.7%
Average commute (minutes)32.3
Households with kids under 1856.3%
Moved in the past year11.1%
Below the poverty line3.0%
Broadband internet97.9%
Speak a non-English language at home39.2%

Household income

% of householdsValue
<$10K2.3%
$10–15K0.2%
$15–25K1.6%
$25–35K0.9%
$35–50K2.6%
$50–75K3.8%
$75–100K4.2%
$100–150K11.9%
$150–200K12.9%
$200K+59.6%

Age

% of all residentsValue
<1013.9%
10–1918.4%
20–244.4%
25–348.1%
35–4420.8%
45–5419.0%
55–648.5%
65–744.7%
75+2.2%

Tenure

% of housing unitsValue
Owned, with mortgage70.2%
Owned outright11.2%
Rented17.8%
Vacant0.8%

Type of building

% of housing unitsValue
Detached house46.3%
Townhome40.7%
2–4 units2.2%
5–19 units5.9%
20+ units5.0%
Mobile / other0.0%

Businesses in 20148

1,452 business establishments with 6,935 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

20148 has 36 USPS carrier routes with 23,360 residential and 283 business mailboxes. Open the EDDM route map.

Carrier routes in 20148

20148 has 36 USPS carrier routes (36 rural (R)) with 23,360 residential and 283 business mailboxes. Routes range from 394 homes (R051) to 977 homes (R081); the median route has 637 homes. The Census counted 20,839 households in 20148 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4996
500–74922
750–9998
1,000–1,4990
1,500+0

Best routes in 20148 for…

Most businesses

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

  1. Route R084 — USPS business mailboxes 80, 960 homes
  2. Route R051 — USPS business mailboxes 69, 394 homes
  3. Route R069 — USPS business mailboxes 22, 663 homes
  4. Route R059 — USPS business mailboxes 20, 780 homes
  5. Route R076 — USPS business mailboxes 16, 960 homes

Select these 5 routes on the route map

Every carrier route in 20148

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R050Rural5381$158,243———
R051Rural39469$200,001+———
R052Rural6741$200,001+———
R053Rural4978$200,001+———
R054Rural6311$200,001+———
R055Rural4741$200,001+———
R056Rural5000$200,001+———
R057Rural5322$200,001+———
R058Rural5371$200,001+———
R059Rural78020$152,958———
R060Rural6332$200,001+———
R061Rural7570$133,948———
R062Rural7593$134,773———
R063Rural6240$200,001+———
R064Rural6401$200,001+———
R065Rural6491$200,001+———
R066Rural5834$200,001+———
R067Rural6253$200,001+———
R068Rural4430$200,001+———
R069Rural66322$200,001+———
R070Rural5951$200,001+———
R071Rural7251$200,001+———
R072Rural6671$200,001+———
R073Rural7321$196,469———
R074Rural5265$133,948———
R075Rural6882$152,958———
R076Rural96016$200,001+———
R077Rural4951$200,001+———
R078Rural7879$200,001+———
R079Rural6830$200,001+———
R080Rural55411$200,001+———
R081Rural9771$200,001+———
R082Rural8911$200,001+———
R083Rural4713$200,001+———
R084Rural96080$200,001+———
R085Rural71610$108,138———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 20148 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

Areas that include 20148

Where it ranks

Mail every home in 20148

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) 20148, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 20148 in?
20148 is a Ashburn, VA mailing address. By land area, 30% lies inside Brambleton, 16% lies inside Broadlands, 10% lies inside Loudoun Valley Estates and 6% lies inside Moorefield; the rest is outside any Census-defined city or community.
What county is 20148 in?
20148 is in Loudoun County.
What is the population of 20148?
About 64,021 people (±2,759), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 61,793.
What is the median household income in 20148?
$233,494 (±$12,950), 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 20148?
36 USPS carrier routes with 23,360 residential and 283 business mailboxes (23,643 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 20148?
The closest, measured center to center: 20166 (4 mi, Dulles Town Center), 20147 (4.4 mi, Ashburn), 20105 (4.8 mi, Stone Ridge), 20175 (6.2 mi, Leesburg), 20152 (6.6 mi, South Riding) and 20164 (7.4 mi, Sterling).

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