95603 ZIP Code, Auburn, CA
95603 is a ZIP code in Auburn, California in Placer County. It covers 36 square miles of land. The closest ZIP codes are 95658, 95602 and 95614. 28,432 people live here in 11,738 households. With about 795 people per square mile it is lightly settled, and owners and renters are mixed (70% own). Median household income is $85,357, below the California median of $99,122; the median age is 48.6, older than most ZIP codes.
Quick facts
- Mailing city: Auburn, CA
- County: Placer County
- Land area: 36 sq mi
- Population: 28,432
- Median household income: $85,357
- Carrier routes: 25 (12,165 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 28,432 |
| Households | 11,738 |
| Median household income | $85,357 |
| Income per person | $51,603 |
| Median age | 48.6 |
| Homeowners | 69.6% |
| Median home value | $650,500 |
| Median rent | $1,565 |
| Bachelor's degree or higher | 33.6% |
| Average commute (minutes) | 24.1 |
| Households with kids under 18 | 24.3% |
| Moved in the past year | 15.2% |
| Below the poverty line | 12.5% |
| Broadband internet | 88.6% |
| Speak a non-English language at home | 8.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.3% |
| $10–15K | 5.3% |
| $15–25K | 4.3% |
| $25–35K | 6.1% |
| $35–50K | 10.1% |
| $50–75K | 14.7% |
| $75–100K | 11.9% |
| $100–150K | 15.7% |
| $150–200K | 9.4% |
| $200K+ | 17.2% |
Age
| % of all residents | Value |
|---|---|
| <10 | 9.6% |
| 10–19 | 9.7% |
| 20–24 | 4.8% |
| 25–34 | 9.7% |
| 35–44 | 12.5% |
| 45–54 | 10.7% |
| 55–64 | 16.5% |
| 65–74 | 15.1% |
| 75+ | 11.4% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 39.0% |
| Owned outright | 26.7% |
| Rented | 28.5% |
| Vacant | 5.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 72.5% |
| Townhome | 5.5% |
| 2–4 units | 6.5% |
| 5–19 units | 4.5% |
| 20+ units | 4.1% |
| Mobile / other | 6.8% |
Businesses in 95603
1,200 business establishments with 12,350 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 171
- Professional, Scientific, and Technical Services: 164
- Health Care and Social Assistance: 162
- Construction: 127
- Other Services (except Public Administration): 126
- Accommodation and Food Services: 125
- Finance and Insurance: 77
- Real Estate and Rental and Leasing: 58
EDDM carrier routes
95603 has 25 USPS carrier routes with 12,165 residential and 1,561 business mailboxes. Open the EDDM route map.
Carrier routes in 95603
95603 has 25 USPS carrier routes (17 city (C), 8 rural (R)) with 12,165 residential and 1,561 business mailboxes. Routes range from 169 homes (R025) to 712 homes (C024); the median route has 499 homes. The Census counted 11,738 households in 95603 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 12 |
| 500–749 | 12 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 95603 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C017 — USPS business mailboxes 230, 353 homes
- Route C012 — USPS business mailboxes 190, 331 homes
- Route C005 — USPS business mailboxes 170, 447 homes
- Route C019 — USPS business mailboxes 141, 400 homes
- Route C014 — USPS business mailboxes 132, 546 homes
Select these 5 routes on the route map
Every carrier route in 95603
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 490 | 59 | $85,264 | — | — | — |
| C003 | City | 530 | 53 | $157,978 | — | — | — |
| C005 | City | 447 | 170 | $57,570 | — | — | — |
| C006 | City | 553 | 104 | $46,097 | — | — | — |
| C007 | City | 496 | 4 | $64,244 | — | — | — |
| C008 | City | 517 | 106 | $135,265 | — | — | — |
| C009 | City | 493 | 35 | $153,122 | — | — | — |
| C012 | City | 331 | 190 | $57,570 | — | — | — |
| C013 | City | 537 | 40 | $39,678 | — | — | — |
| C014 | City | 546 | 132 | $126,249 | — | — | — |
| C015 | City | 572 | 11 | $89,266 | — | — | — |
| C017 | City | 353 | 230 | $126,249 | — | — | — |
| C019 | City | 400 | 141 | $57,570 | — | — | — |
| C020 | City | 427 | 101 | $85,264 | — | — | — |
| C021 | City | 595 | 1 | $109,707 | — | — | — |
| C024 | City | 712 | 21 | $64,120 | — | — | — |
| C031 | City | 363 | 25 | $57,570 | — | — | — |
| R001 | Rural | 536 | 1 | $102,544 | — | — | — |
| R006 | Rural | 469 | 100 | $110,100 | — | — | — |
| R007 | Rural | 487 | 2 | $90,103 | — | — | — |
| R014 | Rural | 503 | 0 | $157,978 | — | — | — |
| R015 | Rural | 505 | 16 | $75,672 | — | — | — |
| R017 | Rural | 499 | 4 | $157,978 | — | — | — |
| R024 | Rural | 635 | 13 | $102,544 | — | — | — |
| R025 | Rural | 169 | 2 | $155,589 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 95603 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
- 95658 — Newcastle CDP, CA (4.9 mi)
- 95602 — Lake of the Pines CDP, CA (5.6 mi)
- 95614 — Auburn Lake Trails CDP, CA (6 mi)
- 95663 — Penryn CDP, CA (6.4 mi)
- 95722 — Meadow Vista CDP, CA (7.3 mi)
- 95703 (7.5 mi)
- 95664 (8 mi)
- 95650 — Loomis town, CA (8.4 mi)
Areas that include 95603
- Auburn, CA ZIP codes — 3 ZIP codes
- North Auburn, CA ZIP codes — 2 ZIP codes
- Placer County ZIP codes — 33 ZIP codes
- California ZIP code data
Where it ranks
- No. 3 of 23: highest share of residents who moved in during the past year in Placer County
- No. 6 of 23: highest median age in Placer County
Mail every home in 95603
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) 95603, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 95603 in?
- 95603 is a Auburn, CA mailing address. By land area, 19% lies inside Auburn and 19% lies inside North Auburn; the rest is outside any Census-defined city or community.
- What county is 95603 in?
- 95603 is in Placer County.
- What is the population of 95603?
- About 28,432 people (±1,033), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 28,021.
- What is the median household income in 95603?
- $85,357 (±$7,388), 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 95603?
- 25 USPS carrier routes with 12,165 residential and 1,561 business mailboxes (13,727 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 95603?
- The closest, measured center to center: 95658 (4.9 mi, Newcastle), 95602 (5.6 mi, Lake of the Pines), 95614 (6 mi, Auburn Lake Trails), 95663 (6.4 mi, Penryn), 95722 (7.3 mi, Meadow Vista) and 95703 (7.5 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.