What city is 94305 in?

94305 is a Stanford, CA mailing address. By land area, 51% lies inside Stanford; the rest is outside any Census-defined city or community.

What county is 94305 in?

94305 is in Santa Clara County.

What is the population of 94305?

About 18,509 people (±970), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,961.

What is the median household income in 94305?

$83,088 (±$25,193), compared with $99,122 for California as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 94305?

8 USPS carrier routes with 4,457 residential and 266 business mailboxes (4,723 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 94305?

The closest, measured center to center: 94304 (1.5 mi, Palo Alto), 94301 (2.1 mi, Palo Alto), 94306 (2.2 mi, Palo Alto), 94025 (2.4 mi, Menlo Park), 94027 (3.2 mi, Atherton) and 94028 (3.8 mi, Portola Valley).

94305 ZIP Code, Stanford, CA

94305 is a ZIP code in Stanford, California in Santa Clara County. It covers 4.8 square miles of land. The closest ZIP codes are 94304, 94301 and 94306. 18,509 people live here in 3,264 households. At about 3,872 people per square mile it has suburban density, and most households rent (28% own). Median household income is $83,088, below the California median of $99,122; the median age is 21.9, younger than most ZIP codes.

Quick facts

Mailing city: Stanford, CA
County: Santa Clara County
Land area: 4.8 sq mi
Population: 18,509
Median household income: $83,088
Carrier routes: 8 (4,457 homes)

Key figures

Measure	Value
Residents	18,509
Households	3,264
Median household income	$83,088
Income per person	$42,424
Median age	21.9
Homeowners	28.4%
Median home value	$2,000,000+
Median rent	$2,014
Bachelor's degree or higher	92.2%
Average commute (minutes)	14.5
Households with kids under 18	14.6%
Moved in the past year	42.4%
Below the poverty line	14.9%
Broadband internet	64.0%
Speak a non-English language at home	40.7%

Household income

% of households	Value
<$10K	10.0%
$10–15K	0.0%
$15–25K	5.6%
$25–35K	4.7%
$35–50K	7.8%
$50–75K	20.0%
$75–100K	5.9%
$100–150K	14.2%
$150–200K	2.1%
$200K+	29.7%

Age

% of all residents	Value
<10	2.3%
10–19	32.7%
20–24	29.2%
25–34	23.3%
35–44	2.7%
45–54	2.3%
55–64	3.9%
65–74	1.7%
75+	2.1%

Tenure

% of housing units	Value
Owned, with mortgage	12.5%
Owned outright	10.7%
Rented	58.4%
Vacant	18.4%

Type of building

% of housing units	Value
Detached house	22.9%
Townhome	5.2%
2–4 units	8.4%
5–19 units	11.4%
20+ units	52.0%
Mobile / other	0.0%

Businesses in 94305

115 business establishments with 54,779 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 30
Accommodation and Food Services: 21
Health Care and Social Assistance: 12
Other Services (except Public Administration): 10
Information: 8
Educational Services: 8
Retail Trade: 6
Administrative and Support and Waste Management and Remediation Services: 5

EDDM carrier routes

94305 has 8 USPS carrier routes with 4,457 residential and 266 business mailboxes. Open the EDDM route map.

Carrier routes in 94305

94305 has 8 USPS carrier routes (8 city (C)) with 4,457 residential and 266 business mailboxes. Routes range from 2 homes (C076) to 1,136 homes (C078); the median route has 396 homes. The Census counted 3,264 households in 94305 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	2
250–499	3
500–749	0
750–999	1
1,000–1,499	2
1,500+	0

Best routes in 94305 for…

Most businesses

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

Route C071 — USPS business mailboxes 98, 383 homes
Route C076 — USPS business mailboxes 94, 2 homes
Route C077 — USPS business mailboxes 36, 876 homes
Route C074 — USPS business mailboxes 31, 1,058 homes
Route C078 — USPS business mailboxes 3, 1,136 homes

Select these 5 routes on the route map

Every carrier route in 94305

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C071	City	383	98	$63,765	—	—	—
C072	City	356	1	$200,001+	—	—	—
C073	City	408	0	$63,251	—	—	—
C074	City	1,058	31	$16,216	—	—	—
C076	City	2	94	$200,001+	—	—	—
C077	City	876	36	$16,216	—	—	—
C078	City	1,136	3	$41,928	—	—	—
C079	City	238	3	$200,001+	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 94305 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

94304 — Palo Alto city, CA (1.5 mi)
94301 — Palo Alto city, CA (2.1 mi)
94306 — Palo Alto city, CA (2.2 mi)
94025 — Menlo Park city, CA (2.4 mi)
94027 — Atherton town, CA (3.2 mi)
94028 — Portola Valley town, CA (3.8 mi)
94303 — Palo Alto city, CA (4.1 mi)
94022 — Los Altos Hills town, CA (4.6 mi)

Areas that include 94305

Stanford, CA ZIP codes — 2 ZIP codes
Santa Clara County ZIP codes — 62 ZIP codes
California ZIP code data

Where it ranks

Mail every home in 94305

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) 94305, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 94305 in?: 94305 is a Stanford, CA mailing address. By land area, 51% lies inside Stanford; the rest is outside any Census-defined city or community.
What county is 94305 in?: 94305 is in Santa Clara County.
What is the population of 94305?: About 18,509 people (±970), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,961.
What is the median household income in 94305?: $83,088 (±$25,193), compared with $99,122 for California as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 94305?: 8 USPS carrier routes with 4,457 residential and 266 business mailboxes (4,723 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 94305?: The closest, measured center to center: 94304 (1.5 mi, Palo Alto), 94301 (2.1 mi, Palo Alto), 94306 (2.2 mi, Palo Alto), 94025 (2.4 mi, Menlo Park), 94027 (3.2 mi, Atherton) and 94028 (3.8 mi, Portola Valley).

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