95403 ZIP Code, Santa Rosa, CA

95403 is a ZIP code in Santa Rosa, California in Sonoma County. It covers 22 square miles of land. The closest ZIP codes are 95439, 95492 and 95404. 45,806 people live here in 16,823 households. At about 2,127 people per square mile it has suburban density, and owners and renters are mixed (55% own). Median household income is $98,191, close to the California median of $99,122.

Quick facts

Key figures

MeasureValue
Residents45,806
Households16,823
Median household income$98,191
Income per person$46,621
Median age40.2
Homeowners54.8%
Median home value$693,000
Median rent$2,275
Bachelor's degree or higher29.3%
Average commute (minutes)21.8
Households with kids under 1830.5%
Moved in the past year15.4%
Below the poverty line9.8%
Broadband internet94.0%
Speak a non-English language at home33.0%

Household income

% of householdsValue
<$10K4.9%
$10–15K1.9%
$15–25K4.0%
$25–35K5.2%
$35–50K7.9%
$50–75K13.7%
$75–100K12.9%
$100–150K19.4%
$150–200K13.7%
$200K+16.4%

Age

% of all residentsValue
<1011.9%
10–1911.8%
20–245.4%
25–3413.8%
35–4415.0%
45–5411.8%
55–6412.7%
65–7410.1%
75+7.5%

Tenure

% of housing unitsValue
Owned, with mortgage34.4%
Owned outright17.4%
Rented42.5%
Vacant5.6%

Type of building

% of housing unitsValue
Detached house50.3%
Townhome10.3%
2–4 units6.8%
5–19 units12.2%
20+ units11.6%
Mobile / other8.8%

Businesses in 95403

1,539 business establishments with 27,022 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

95403 has 30 USPS carrier routes with 18,952 residential and 1,936 business mailboxes. Open the EDDM route map.

Carrier routes in 95403

95403 has 30 USPS carrier routes (30 city (C)) with 18,952 residential and 1,936 business mailboxes. Routes range from 229 homes (C013) to 1,101 homes (C078); the median route has 641 homes. The Census counted 16,823 households in 95403 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4995
500–74917
750–9996
1,000–1,4991
1,500+0

Best routes in 95403 for…

Most businesses

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

  1. Route C087 — USPS business mailboxes 275, 571 homes
  2. Route C083 — USPS business mailboxes 264, 309 homes
  3. Route C064 — USPS business mailboxes 219, 306 homes
  4. Route C013 — USPS business mailboxes 184, 229 homes
  5. Route C029 — USPS business mailboxes 181, 816 homes

Select these 5 routes on the route map

Every carrier route in 95403

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C002City48515$75,526———
C013City229184$82,321———
C019City67850$150,383———
C020City6723$146,795———
C022City500132$107,447———
C024City6484$100,281———
C027City45537$155,056———
C029City816181$71,993———
C032City60929$150,383———
C036City73623$109,934———
C039City6282$109,934———
C041City5521$112,913———
C048City7545$127,725———
C055City60252$107,447———
C058City63423$112,394———
C059City53245$85,659———
C062City86493$100,281———
C063City70392$58,781———
C064City306219$69,950———
C065City67823$109,934———
C069City71419$56,279———
C070City7571$148,618———
C074City7265$154,356———
C078City1,10116$94,933———
C080City45656$71,993———
C083City309264$69,950———
C084City8471$105,576———
C085City7801$76,101———
C086City61085$71,993———
C087City571275$112,913———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 95403 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 95403

Where it ranks

Mail every home in 95403

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) 95403, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 95403 in?
95403 is a Santa Rosa, CA mailing address. By land area, 33% lies inside Santa Rosa, 21% lies inside Larkfield-Wikiup and 1% lies inside Windsor; the rest is outside any Census-defined city or community.
What county is 95403 in?
95403 is in Sonoma County.
What is the population of 95403?
About 45,806 people (±2,166), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 44,705.
What is the median household income in 95403?
$98,191 (±$7,064), 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 95403?
30 USPS carrier routes with 18,952 residential and 1,936 business mailboxes (20,870 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 95403?
The closest, measured center to center: 95439 (1.5 mi, Fulton), 95492 (3.6 mi, Windsor), 95404 (3.8 mi, Santa Rosa), 95401 (4.3 mi, Santa Rosa), 95405 (6.5 mi, Santa Rosa) and 95407 (7.5 mi, Santa Rosa).

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