91361 ZIP Code, Westlake Village, CA
91361 is a ZIP code in Westlake Village, California — mostly in Ventura County (83% of its land), with smaller parts in Los Angeles County. It covers 29 square miles of land. The closest ZIP codes are 91320, 90265 and 91362. 18,802 people live here in 7,667 households. With about 651 people per square mile it is lightly settled, and owners and renters are mixed (70% own). Median household income is $144,900, above the California median of $99,122; the median age is 50.1, older than most ZIP codes.
Quick facts
- Mailing city: Westlake Village, CA
- County: Ventura County
- Land area: 29 sq mi
- Population: 18,802
- Median household income: $144,900
- Carrier routes: 18 (8,580 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 18,802 |
| Households | 7,667 |
| Median household income | $144,900 |
| Income per person | $90,911 |
| Median age | 50.1 |
| Homeowners | 69.7% |
| Median home value | $1,433,300 |
| Median rent | $2,827 |
| Bachelor's degree or higher | 60.9% |
| Average commute (minutes) | 25.2 |
| Households with kids under 18 | 27.4% |
| Moved in the past year | 7.3% |
| Below the poverty line | 7.0% |
| Broadband internet | 96.2% |
| Speak a non-English language at home | 18.5% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.9% |
| $10–15K | 0.9% |
| $15–25K | 2.1% |
| $25–35K | 2.0% |
| $35–50K | 5.2% |
| $50–75K | 9.9% |
| $75–100K | 9.0% |
| $100–150K | 18.7% |
| $150–200K | 13.2% |
| $200K+ | 36.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 10.2% |
| 10–19 | 12.5% |
| 20–24 | 2.5% |
| 25–34 | 8.6% |
| 35–44 | 8.8% |
| 45–54 | 15.5% |
| 55–64 | 15.2% |
| 65–74 | 13.7% |
| 75+ | 13.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 44.8% |
| Owned outright | 19.8% |
| Rented | 27.8% |
| Vacant | 7.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 59.3% |
| Townhome | 18.6% |
| 2–4 units | 3.7% |
| 5–19 units | 10.0% |
| 20+ units | 5.6% |
| Mobile / other | 2.9% |
Businesses in 91361
1,650 business establishments with 18,064 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 400
- Health Care and Social Assistance: 301
- Finance and Insurance: 222
- Real Estate and Rental and Leasing: 139
- Retail Trade: 82
- Arts, Entertainment, and Recreation: 78
- Wholesale Trade: 67
- Other Services (except Public Administration): 66
EDDM carrier routes
91361 has 18 USPS carrier routes with 8,580 residential and 1,416 business mailboxes. Open the EDDM route map.
Carrier routes in 91361
91361 has 18 USPS carrier routes (16 city (C), 2 rural (R)) with 8,580 residential and 1,416 business mailboxes. Routes range from 73 homes (C026) to 715 homes (C033); the median route has 487 homes. The Census counted 7,667 households in 91361 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 2 |
| 250–499 | 8 |
| 500–749 | 8 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 91361 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C026 — USPS business mailboxes 474, 73 homes
- Route C045 — USPS business mailboxes 229, 712 homes
- Route C029 — USPS business mailboxes 176, 388 homes
- Route C024 — USPS business mailboxes 137, 700 homes
- Route C036 — USPS business mailboxes 119, 576 homes
Select these 5 routes on the route map
Every carrier route in 91361
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C018 | City | 494 | 0 | $200,001+ | — | — | — |
| C019 | City | 560 | 1 | $200,001+ | — | — | — |
| C020 | City | 480 | 1 | $172,913 | — | — | — |
| C021 | City | 594 | 31 | $200,001+ | — | — | — |
| C024 | City | 700 | 137 | $78,867 | — | — | — |
| C025 | City | 460 | 18 | $200,001+ | — | — | — |
| C026 | City | 73 | 474 | $196,683 | — | — | — |
| C028 | City | 533 | 2 | $200,001+ | — | — | — |
| C029 | City | 388 | 176 | $144,145 | — | — | — |
| C032 | City | 444 | 0 | $200,001+ | — | — | — |
| C033 | City | 715 | 22 | $101,692 | — | — | — |
| C035 | City | 412 | 90 | $196,683 | — | — | — |
| C036 | City | 576 | 119 | $200,001+ | — | — | — |
| C037 | City | 90 | 1 | $196,683 | — | — | — |
| C045 | City | 712 | 229 | $196,683 | — | — | — |
| C051 | City | 379 | 110 | $144,145 | — | — | — |
| R001 | Rural | 538 | 3 | $200,001+ | — | — | — |
| R005 | Rural | 432 | 2 | $200,001+ | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 91361 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
- 91320 — Thousand Oaks city, CA (4.5 mi)
- 90265 — Malibu city, CA (5 mi)
- 91362 — Thousand Oaks city, CA (5.2 mi)
- 91360 — Thousand Oaks city, CA (5.3 mi)
- 91301 — Agoura Hills city, CA (7.1 mi)
- 91377 — Oak Park CDP, CA (7.4 mi)
- 93012 — Camarillo city, CA (7.7 mi)
- 93065 — Simi Valley city, CA (10.7 mi)
Areas that include 91361
- Thousand Oaks, CA ZIP codes — 4 ZIP codes
- Westlake Village, CA ZIP codes — 2 ZIP codes
- Lake Sherwood, CA ZIP codes — 1 ZIP code
- Los Angeles County ZIP codes — 298 ZIP codes
- Ventura County ZIP codes — 33 ZIP codes
- California ZIP code data
Where it ranks
- No. 7 of 30: highest median household income in Ventura County
- No. 3 of 30: highest median home value in Ventura County
- No. 4 of 30: highest median age in Ventura County
Mail every home in 91361
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) 91361, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 91361 in?
- 91361 is a Westlake Village, CA mailing address. By land area, 24% lies inside Thousand Oaks, 14% lies inside Westlake Village and 11% lies inside Lake Sherwood; the rest is outside any Census-defined city or community.
- What county is 91361 in?
- 91361 is mostly in Ventura County (83% of its land), with smaller parts in Los Angeles County.
- What is the population of 91361?
- About 18,802 people (±1,131), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,262.
- What is the median household income in 91361?
- $144,900 (±$14,702), 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 91361?
- 18 USPS carrier routes with 8,580 residential and 1,416 business mailboxes (9,998 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 91361?
- The closest, measured center to center: 91320 (4.5 mi, Thousand Oaks), 90265 (5 mi, Malibu), 91362 (5.2 mi, Thousand Oaks), 91360 (5.3 mi, Thousand Oaks), 91301 (7.1 mi, Agoura Hills) and 91377 (7.4 mi, Oak Park).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.