94595 ZIP Code, Walnut Creek, CA

94595 is a ZIP code in Walnut Creek, California in Contra Costa County. It covers 5.2 square miles of land. The closest ZIP codes are 94596, 94575 and 94597. 16,988 people live here in 9,368 households. At about 3,256 people per square mile it has suburban density, and most homes are owner-occupied (82%). Median household income is $100,552, close to the California median of $99,122; the median age is 69.2, older than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents16,988
Households9,368
Median household income$100,552
Income per person$86,558
Median age69.2
Homeowners81.9%
Median home value$860,600
Median rent$2,557
Bachelor's degree or higher69.6%
Average commute (minutes)27.7
Households with kids under 1812.3%
Moved in the past year12.0%
Below the poverty line4.5%
Broadband internet92.5%
Speak a non-English language at home21.8%

Household income

% of householdsValue
<$10K3.7%
$10–15K1.6%
$15–25K3.1%
$25–35K6.1%
$35–50K11.8%
$50–75K10.8%
$75–100K12.4%
$100–150K18.7%
$150–200K9.3%
$200K+22.3%

Age

% of all residentsValue
<105.1%
10–196.9%
20–242.0%
25–342.9%
35–447.3%
45–5410.4%
55–647.5%
65–7420.8%
75+37.1%

Tenure

% of housing unitsValue
Owned, with mortgage33.4%
Owned outright44.8%
Rented17.2%
Vacant4.7%

Type of building

% of housing unitsValue
Detached house28.3%
Townhome13.7%
2–4 units19.2%
5–19 units24.6%
20+ units14.2%
Mobile / other0.0%

Businesses in 94595

286 business establishments with 2,908 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

94595 has 18 USPS carrier routes with 10,249 residential and 253 business mailboxes. Open the EDDM route map.

Carrier routes in 94595

94595 has 18 USPS carrier routes (18 city (C)) with 10,249 residential and 253 business mailboxes. Routes range from 435 homes (C021) to 737 homes (C024); the median route has 570 homes. The Census counted 9,368 households in 94595 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4992
500–74916
750–9990
1,000–1,4990
1,500+0

Best routes in 94595 for…

Most businesses

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

  1. Route C002 — USPS business mailboxes 120, 578 homes
  2. Route C023 — USPS business mailboxes 69, 630 homes
  3. Route C025 — USPS business mailboxes 27, 507 homes
  4. Route C008 — USPS business mailboxes 16, 608 homes
  5. Route C018 — USPS business mailboxes 9, 560 homes

Select these 5 routes on the route map

Every carrier route in 94595

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C002City578120$200,001+———
C004City4590$80,737———
C005City5760$103,420———
C008City60816$200,001+———
C009City5270$83,792———
C010City5573$136,009———
C012City5630$42,341———
C015City5850$76,242———
C018City5609$83,792———
C019City6404$95,644———
C020City6470$95,644———
C021City4350$102,924———
C022City5340$42,341———
C023City63069$80,737———
C024City7375$65,093———
C025City50727$200,001+———
C026City5910$83,792———
C028City5150$42,341———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 94595 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 94595

Where it ranks

Mail every home in 94595

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) 94595, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 94595 in?
94595 is a Walnut Creek, CA mailing address. By land area, 68% lies inside Walnut Creek, 22% lies inside Saranap and 10% lies inside Castle Hill.
What county is 94595 in?
94595 is in Contra Costa County.
What is the population of 94595?
About 16,988 people (±1,080), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,716.
What is the median household income in 94595?
$100,552 (±$5,723), 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 94595?
18 USPS carrier routes with 10,249 residential and 253 business mailboxes (10,502 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 94595?
The closest, measured center to center: 94596 (2.1 mi, Walnut Creek), 94575 (3.1 mi, Moraga), 94597 (3.2 mi, Walnut Creek), 94549 (3.4 mi, Lafayette), 94556 (3.4 mi, Moraga) and 94507 (3.6 mi, Alamo).

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