91377 ZIP Code, Oak Park, CA
91377 is a ZIP code in Oak Park, California in Ventura County. It covers 5.4 square miles of land. The closest ZIP codes are 91362, 91301 and 93065. 13,757 people live here in 5,099 households. At about 2,550 people per square mile it has suburban density, and most homes are owner-occupied (72%). Median household income is $163,085, well above the California median of $99,122.
Quick facts
- Mailing city: Oak Park, CA
- County: Ventura County
- Land area: 5.4 sq mi
- Population: 13,757
- Median household income: $163,085
- Carrier routes: 7 (5,273 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 13,757 |
| Households | 5,099 |
| Median household income | $163,085 |
| Income per person | $77,528 |
| Median age | 43 |
| Homeowners | 71.9% |
| Median home value | $1,036,900 |
| Median rent | $3,149 |
| Bachelor's degree or higher | 63.0% |
| Average commute (minutes) | 31.1 |
| Households with kids under 18 | 39.5% |
| Moved in the past year | 9.9% |
| Below the poverty line | 4.2% |
| Broadband internet | 96.8% |
| Speak a non-English language at home | 26.2% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.5% |
| $10–15K | 1.3% |
| $15–25K | 0.9% |
| $25–35K | 3.6% |
| $35–50K | 6.5% |
| $50–75K | 7.0% |
| $75–100K | 4.9% |
| $100–150K | 16.4% |
| $150–200K | 19.3% |
| $200K+ | 34.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 8.7% |
| 10–19 | 18.2% |
| 20–24 | 4.9% |
| 25–34 | 8.2% |
| 35–44 | 12.7% |
| 45–54 | 14.8% |
| 55–64 | 16.6% |
| 65–74 | 10.9% |
| 75+ | 5.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 51.0% |
| Owned outright | 17.5% |
| Rented | 26.7% |
| Vacant | 4.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 64.5% |
| Townhome | 14.7% |
| 2–4 units | 8.3% |
| 5–19 units | 10.6% |
| 20+ units | 1.7% |
| Mobile / other | 0.3% |
Businesses in 91377
306 business establishments with 819 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 90
- Arts, Entertainment, and Recreation: 31
- Real Estate and Rental and Leasing: 30
- Construction: 28
- Health Care and Social Assistance: 23
- Finance and Insurance: 20
- Other Services (except Public Administration): 19
- Information: 17
EDDM carrier routes
91377 has 7 USPS carrier routes with 5,273 residential and 72 business mailboxes. Open the EDDM route map.
Carrier routes in 91377
91377 has 7 USPS carrier routes (7 city (C)) with 5,273 residential and 72 business mailboxes. Routes range from 574 homes (C003) to 891 homes (C024); the median route has 750 homes. The Census counted 5,099 households in 91377 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 3 |
| 750–999 | 4 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 91377 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C031 — USPS business mailboxes 39, 750 homes
- Route C025 — USPS business mailboxes 15, 743 homes
- Route C014 — USPS business mailboxes 13, 606 homes
- Route C018 — USPS business mailboxes 2, 867 homes
- Route C030 — USPS business mailboxes 2, 842 homes
Select these 5 routes on the route map
Every carrier route in 91377
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C003 | City | 574 | 1 | $175,318 | — | — | — |
| C014 | City | 606 | 13 | $174,708 | — | — | — |
| C018 | City | 867 | 2 | $111,300 | — | — | — |
| C024 | City | 891 | 0 | $174,708 | — | — | — |
| C025 | City | 743 | 15 | $177,554 | — | — | — |
| C030 | City | 842 | 2 | $131,246 | — | — | — |
| C031 | City | 750 | 39 | $131,246 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 91377 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
- 91362 — Thousand Oaks city, CA (3.1 mi)
- 91301 — Agoura Hills city, CA (4.3 mi)
- 93065 — Simi Valley city, CA (5.4 mi)
- 93064 (5.7 mi)
- 91307 — Los Angeles city, CA (5.9 mi)
- 91360 — Thousand Oaks city, CA (6.5 mi)
- 91302 — Calabasas city, CA (7 mi)
- 91361 — Thousand Oaks city, CA (7.4 mi)
Areas that include 91377
- Oak Park, CA ZIP codes — 1 ZIP code
- Ventura County ZIP codes — 33 ZIP codes
- California ZIP code data
Where it ranks
- No. 2 of 30: highest median household income in Ventura County
- No. 6 of 30: highest median home value in Ventura County
- No. 6 of 30: highest share of households with children in Ventura County
Mail every home in 91377
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) 91377, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 91377 in?
- 91377 is a Oak Park, CA mailing address. By land area, 98% lies inside Oak Park.
- What county is 91377 in?
- 91377 is in Ventura County.
- What is the population of 91377?
- About 13,757 people (±1,242), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 13,898.
- What is the median household income in 91377?
- $163,085 (±$8,800), 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 91377?
- 7 USPS carrier routes with 5,273 residential and 72 business mailboxes (5,345 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 91377?
- The closest, measured center to center: 91362 (3.1 mi, Thousand Oaks), 91301 (4.3 mi, Agoura Hills), 93065 (5.4 mi, Simi Valley), 93064 (5.7 mi), 91307 (5.9 mi, Los Angeles) and 91360 (6.5 mi, Thousand Oaks).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.