What city is 94920 in?

94920 is a Belvedere Tiburon, CA mailing address. By land area, 69% lies inside Tiburon, 8% lies inside Belvedere and 1% lies inside Strawberry; the rest is outside any Census-defined city or community.

What is the population of 94920?

About 12,609 people (±574), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 13,010.

What is the median household income in 94920?

$246,045 (±$25,397), 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 94920?

13 USPS carrier routes with 5,709 residential and 247 business mailboxes (5,956 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 94920?

The closest, measured center to center: 94925 (4 mi, Corte Madera), 94964 (4 mi), 94965 (4.9 mi, Sausalito), 94939 (5.4 mi, Larkspur), 94801 (5.6 mi, Richmond) and 94123 (6.1 mi, San Francisco).

94920 ZIP Code, Belvedere Tiburon, CA

94920 is a ZIP code in Belvedere Tiburon, California in Marin County. It covers 6.5 square miles of land. The closest ZIP codes are 94925, 94964 and 94965. 12,609 people live here in 4,934 households. At about 1,937 people per square mile it has suburban density, and most homes are owner-occupied (72%). Median household income is $246,045, well above the California median of $99,122; the median age is 51.4, older than most ZIP codes.

Quick facts

Mailing city: Belvedere Tiburon, CA
County: Marin County
Land area: 6.5 sq mi
Population: 12,609
Median household income: $246,045
Carrier routes: 13 (5,709 homes)

Key figures

Measure	Value
Residents	12,609
Households	4,934
Median household income	$246,045
Income per person	$156,030
Median age	51.4
Homeowners	72.3%
Median home value	$2,000,000+
Median rent	$3,501
Bachelor's degree or higher	81.7%
Average commute (minutes)	30
Households with kids under 18	32.5%
Moved in the past year	13.3%
Below the poverty line	2.6%
Broadband internet	99.3%
Speak a non-English language at home	20.9%

Household income

% of households	Value
<$10K	1.6%
$10–15K	0.8%
$15–25K	0.6%
$25–35K	2.8%
$35–50K	2.5%
$50–75K	5.6%
$75–100K	5.1%
$100–150K	12.2%
$150–200K	11.1%
$200K+	57.7%

Age

% of all residents	Value
<10	8.6%
10–19	14.6%
20–24	3.1%
25–34	4.9%
35–44	9.7%
45–54	18.1%
55–64	14.8%
65–74	14.6%
75+	11.6%

Tenure

% of housing units	Value
Owned, with mortgage	36.3%
Owned outright	25.2%
Rented	23.4%
Vacant	15.1%

Type of building

% of housing units	Value
Detached house	62.5%
Townhome	6.8%
2–4 units	9.8%
5–19 units	13.9%
20+ units	7.1%
Mobile / other	0.0%

Businesses in 94920

392 business establishments with 2,566 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 104
Real Estate and Rental and Leasing: 52
Finance and Insurance: 39
Retail Trade: 30
Other Services (except Public Administration): 27
Accommodation and Food Services: 24
Health Care and Social Assistance: 22
Construction: 21

EDDM carrier routes

94920 has 13 USPS carrier routes with 5,709 residential and 247 business mailboxes. Open the EDDM route map.

Carrier routes in 94920

94920 has 13 USPS carrier routes (13 city (C)) with 5,709 residential and 247 business mailboxes. Routes range from 257 homes (C005) to 627 homes (C007); the median route has 427 homes. The Census counted 4,934 households in 94920 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	11
500–749	2
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 94920 for…

Most businesses

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

Route C010 — USPS business mailboxes 177, 398 homes
Route C008 — USPS business mailboxes 26, 467 homes
Route C011 — USPS business mailboxes 21, 380 homes
Route C014 — USPS business mailboxes 6, 427 homes
Route C005 — USPS business mailboxes 5, 257 homes

Select these 5 routes on the route map

Every carrier route in 94920

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	384	0	$200,001+	—	—	—
C002	City	441	4	$200,001+	—	—	—
C003	City	424	0	$200,001+	—	—	—
C004	City	484	2	$200,001+	—	—	—
C005	City	257	5	$200,001+	—	—	—
C006	City	466	3	$200,001+	—	—	—
C007	City	627	1	$200,001+	—	—	—
C008	City	467	26	$200,001+	—	—	—
C009	City	381	1	$200,001+	—	—	—
C010	City	398	177	$200,001+	—	—	—
C011	City	380	21	$200,001+	—	—	—
C014	City	427	6	$200,001+	—	—	—
C016	City	573	1	$200,001+	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 94920 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

94925 — Corte Madera town, CA (4 mi)
94964 (4 mi)
94965 — Sausalito city, CA (4.9 mi)
94939 — Larkspur city, CA (5.4 mi)
94801 — Richmond city, CA (5.6 mi)
94123 — San Francisco city, CA (6.1 mi)
94129 — San Francisco city, CA (6.2 mi)
94904 — Kentfield CDP, CA (6.4 mi)

Areas that include 94920

Tiburon, CA ZIP codes — 1 ZIP code
Belvedere, CA ZIP codes — 1 ZIP code
Belvedere Tiburon, CA ZIP codes — 1 ZIP code
Marin County ZIP codes — 29 ZIP codes
California ZIP code data

Where it ranks

Mail every home in 94920

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) 94920, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 94920 in?: 94920 is a Belvedere Tiburon, CA mailing address. By land area, 69% lies inside Tiburon, 8% lies inside Belvedere and 1% lies inside Strawberry; the rest is outside any Census-defined city or community.
What county is 94920 in?: 94920 is in Marin County.
What is the population of 94920?: About 12,609 people (±574), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 13,010.
What is the median household income in 94920?: $246,045 (±$25,397), 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 94920?: 13 USPS carrier routes with 5,709 residential and 247 business mailboxes (5,956 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 94920?: The closest, measured center to center: 94925 (4 mi, Corte Madera), 94964 (4 mi), 94965 (4.9 mi, Sausalito), 94939 (5.4 mi, Larkspur), 94801 (5.6 mi, Richmond) and 94123 (6.1 mi, San Francisco).

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