91381 ZIP Code, Stevenson Ranch, CA
91381 is a ZIP code in Stevenson Ranch, California in Los Angeles County. It covers 40 square miles of land. The closest ZIP codes are 91355, 91311 and 93063. 22,582 people live here in 7,553 households. With about 571 people per square mile it is lightly settled, and owners and renters are mixed (65% own). Median household income is $158,504, well above the California median of $99,122; 45% of households have children under 18.
Quick facts
- Mailing city: Stevenson Ranch, CA
- County: Los Angeles County
- Land area: 40 sq mi
- Population: 22,582
- Median household income: $158,504
- Carrier routes: 12 (8,870 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 22,582 |
| Households | 7,553 |
| Median household income | $158,504 |
| Income per person | $66,942 |
| Median age | 40.1 |
| Homeowners | 65.2% |
| Median home value | $1,058,400 |
| Median rent | $2,860 |
| Bachelor's degree or higher | 60.1% |
| Average commute (minutes) | 36.4 |
| Households with kids under 18 | 45.2% |
| Moved in the past year | 14.1% |
| Below the poverty line | 3.9% |
| Broadband internet | 98.5% |
| Speak a non-English language at home | 35.5% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.5% |
| $10–15K | 0.5% |
| $15–25K | 3.0% |
| $25–35K | 2.6% |
| $35–50K | 4.2% |
| $50–75K | 7.4% |
| $75–100K | 8.1% |
| $100–150K | 17.7% |
| $150–200K | 15.7% |
| $200K+ | 38.4% |
Age
| % of all residents | Value |
|---|---|
| <10 | 12.7% |
| 10–19 | 18.0% |
| 20–24 | 3.9% |
| 25–34 | 8.2% |
| 35–44 | 13.8% |
| 45–54 | 19.2% |
| 55–64 | 14.7% |
| 65–74 | 5.3% |
| 75+ | 4.2% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 55.2% |
| Owned outright | 9.7% |
| Rented | 34.3% |
| Vacant | 0.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 63.5% |
| Townhome | 9.5% |
| 2–4 units | 4.0% |
| 5–19 units | 10.8% |
| 20+ units | 11.8% |
| Mobile / other | 0.6% |
Businesses in 91381
542 business establishments with 5,102 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 112
- Health Care and Social Assistance: 68
- Accommodation and Food Services: 55
- Real Estate and Rental and Leasing: 51
- Retail Trade: 42
- Finance and Insurance: 41
- Construction: 36
- Arts, Entertainment, and Recreation: 33
EDDM carrier routes
91381 has 12 USPS carrier routes with 8,870 residential and 263 business mailboxes. Open the EDDM route map.
Carrier routes in 91381
91381 has 12 USPS carrier routes (4 city (C), 8 rural (R)) with 8,870 residential and 263 business mailboxes. Routes range from 512 homes (R030) to 1,014 homes (R036); the median route has 767 homes. The Census counted 7,553 households in 91381 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 6 |
| 750–999 | 5 |
| 1,000–1,499 | 1 |
| 1,500+ | 0 |
Best routes in 91381 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C051 — USPS business mailboxes 94, 888 homes
- Route C052 — USPS business mailboxes 63, 823 homes
- Route R033 — USPS business mailboxes 56, 828 homes
- Route C055 — USPS business mailboxes 21, 711 homes
- Route C053 — USPS business mailboxes 17, 673 homes
Select these 5 routes on the route map
Every carrier route in 91381
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C051 | City | 888 | 94 | $200,001+ | — | — | — |
| C052 | City | 823 | 63 | $200,001+ | — | — | — |
| C053 | City | 673 | 17 | $172,882 | — | — | — |
| C055 | City | 711 | 21 | $49,111 | — | — | — |
| R020 | Rural | 518 | 3 | $200,001+ | — | — | — |
| R030 | Rural | 512 | 1 | $200,001+ | — | — | — |
| R031 | Rural | 530 | 1 | $200,001+ | — | — | — |
| R032 | Rural | 534 | 5 | $188,592 | — | — | — |
| R033 | Rural | 828 | 56 | $188,592 | — | — | — |
| R036 | Rural | 1,014 | 2 | $200,001+ | — | — | — |
| R065 | Rural | 969 | 0 | $146,406 | — | — | — |
| R067 | Rural | 870 | 0 | $146,406 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 91381 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
- 91355 — Santa Clarita city, CA (2.9 mi)
- 91311 — Los Angeles city, CA (5.6 mi)
- 93063 — Simi Valley city, CA (6.4 mi)
- 91354 — Santa Clarita city, CA (6.6 mi)
- 91321 — Santa Clarita city, CA (6.9 mi)
- 91326 — Los Angeles city, CA (7 mi)
- 91350 — Santa Clarita city, CA (7.2 mi)
- 91344 — Los Angeles city, CA (8.3 mi)
Areas that include 91381
- Stevenson Ranch, CA ZIP codes — 1 ZIP code
- Los Angeles County ZIP codes — 298 ZIP codes
- California ZIP code data
Where it ranks
- No. 18 of 275: highest median household income in Los Angeles County
- No. 18 of 278: highest share of households with children in Los Angeles County
- No. 9 of 278: fastest population growth in Los Angeles County
Mail every home in 91381
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) 91381, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 91381 in?
- 91381 is a Stevenson Ranch, CA mailing address. By land area, 16% lies inside Stevenson Ranch; the rest is outside any Census-defined city or community.
- What county is 91381 in?
- 91381 is in Los Angeles County.
- What is the population of 91381?
- About 22,582 people (±1,775), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,862.
- What is the median household income in 91381?
- $158,504 (±$12,033), 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 91381?
- 12 USPS carrier routes with 8,870 residential and 263 business mailboxes (9,133 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 91381?
- The closest, measured center to center: 91355 (2.9 mi, Santa Clarita), 91311 (5.6 mi, Los Angeles), 93063 (6.4 mi, Simi Valley), 91354 (6.6 mi, Santa Clarita), 91321 (6.9 mi, Santa Clarita) and 91326 (7 mi, Los Angeles).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.