94577 ZIP Code, San Leandro, CA

94577 is a ZIP code in San Leandro, California in Alameda County. It covers 8.1 square miles of land. The closest ZIP codes are 94603, 94579 and 94578. 46,317 people live here in 16,555 households. At about 5,708 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (56% own). Median household income is $108,772, close to the California median of $99,122.

Quick facts

Key figures

MeasureValue
Residents46,317
Households16,555
Median household income$108,772
Income per person$53,118
Median age41.3
Homeowners55.5%
Median home value$856,100
Median rent$2,242
Bachelor's degree or higher38.5%
Average commute (minutes)30.7
Households with kids under 1829.2%
Moved in the past year7.3%
Below the poverty line8.0%
Broadband internet93.3%
Speak a non-English language at home50.2%

Household income

% of householdsValue
<$10K3.1%
$10–15K3.6%
$15–25K5.2%
$25–35K5.2%
$35–50K7.3%
$50–75K9.7%
$75–100K10.8%
$100–150K19.5%
$150–200K12.1%
$200K+23.6%

Age

% of all residentsValue
<108.6%
10–1911.3%
20–245.9%
25–3413.7%
35–4415.4%
45–5413.7%
55–6412.4%
65–7411.2%
75+7.6%

Tenure

% of housing unitsValue
Owned, with mortgage34.6%
Owned outright18.4%
Rented41.7%
Vacant5.3%

Type of building

% of housing unitsValue
Detached house55.1%
Townhome8.4%
2–4 units7.5%
5–19 units8.5%
20+ units18.5%
Mobile / other2.0%

Businesses in 94577

1,821 business establishments with 38,477 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

94577 has 42 USPS carrier routes with 17,783 residential and 2,574 business mailboxes. Open the EDDM route map.

Carrier routes in 94577

94577 has 42 USPS carrier routes (42 city (C)) with 17,783 residential and 2,574 business mailboxes. Routes range from 70 homes (C022) to 969 homes (C030); the median route has 421 homes. The Census counted 16,555 households in 94577 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2497
250–49921
500–74912
750–9992
1,000–1,4990
1,500+0

Best routes in 94577 for…

Most businesses

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

  1. Route C003 — USPS business mailboxes 269, 235 homes
  2. Route C031 — USPS business mailboxes 240, 93 homes
  3. Route C022 — USPS business mailboxes 238, 70 homes
  4. Route C013 — USPS business mailboxes 195, 322 homes
  5. Route C011 — USPS business mailboxes 177, 190 homes

Select these 5 routes on the route map

Every carrier route in 94577

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C003City235269$86,122———
C004City51238$171,661———
C007City42121$84,671———
C008City39828$157,653———
C010City42221$200,001+———
C011City190177$87,705———
C012City37652$157,653———
C013City322195$103,202———
C014City59223$89,203———
C015City71660$109,196———
C016City4480$119,714———
C017City51217$112,020———
C018City35265$89,203———
C019City42051$74,752———
C022City70238————
C023City5062$162,033———
C024City34975$101,272———
C025City87131$86,122———
C026City1330$152,772———
C028City42361$150,767———
C029City2490$156,606———
C030City96910$86,122———
C031City93240$91,926———
C032City251116$128,013———
C033City5108$152,772———
C034City3044$156,606———
C035City42586$162,033———
C036City47746$103,202———
C037City2641$156,606———
C038City331122$150,767———
C039City62413$103,202———
C040City3880$200,001+———
C043City736116$103,202———
C044City5645$87,705———
C048City306118$91,926———
C049City4821$97,189———
C051City204160$91,926———
C053City4098$191,617———
C054City30171$109,196———
C056City5623$101,272———
C060City5620$109,196———
C061City50422$124,197———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 94577 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 94577

Mail every home in 94577

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) 94577, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 94577 in?
94577 is a San Leandro, CA mailing address. By land area, 99% lies inside San Leandro.
What county is 94577 in?
94577 is in Alameda County.
What is the population of 94577?
About 46,317 people (±1,732), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 48,868.
What is the median household income in 94577?
$108,772 (±$7,591), 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 94577?
42 USPS carrier routes with 17,783 residential and 2,574 business mailboxes (20,358 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 94577?
The closest, measured center to center: 94603 (1.6 mi, Oakland), 94579 (2.2 mi, San Leandro), 94578 (2.5 mi, San Leandro), 94580 (3.3 mi, San Lorenzo), 94605 (3.3 mi, Oakland) and 94621 (3.3 mi, Oakland).

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