91311 ZIP Code, Chatsworth, CA
91311 is a ZIP code in Chatsworth, California in Los Angeles County. It covers 33 square miles of land. The closest ZIP codes are 91326, 91324 and 93063. 40,898 people live here in 14,561 households. At about 1,222 people per square mile it has suburban density, and owners and renters are mixed (67% own). Median household income is $119,386, above the California median of $99,122.
Quick facts
- Mailing city: Chatsworth, CA
- County: Los Angeles County
- Land area: 33 sq mi
- Population: 40,898
- Median household income: $119,386
- Carrier routes: 27 (15,522 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 40,898 |
| Households | 14,561 |
| Median household income | $119,386 |
| Income per person | $53,824 |
| Median age | 42.3 |
| Homeowners | 66.6% |
| Median home value | $876,400 |
| Median rent | $2,311 |
| Bachelor's degree or higher | 46.2% |
| Average commute (minutes) | 29.3 |
| Households with kids under 18 | 30.5% |
| Moved in the past year | 7.8% |
| Below the poverty line | 8.8% |
| Broadband internet | 95.6% |
| Speak a non-English language at home | 42.2% |
Household income
| % of households | Value |
|---|---|
| <$10K | 4.3% |
| $10–15K | 1.8% |
| $15–25K | 3.8% |
| $25–35K | 4.0% |
| $35–50K | 6.3% |
| $50–75K | 10.6% |
| $75–100K | 9.9% |
| $100–150K | 22.6% |
| $150–200K | 11.1% |
| $200K+ | 25.5% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.4% |
| 10–19 | 11.3% |
| 20–24 | 4.6% |
| 25–34 | 12.1% |
| 35–44 | 14.2% |
| 45–54 | 12.9% |
| 55–64 | 14.1% |
| 65–74 | 10.9% |
| 75+ | 8.6% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 44.8% |
| Owned outright | 19.6% |
| Rented | 32.1% |
| Vacant | 3.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 56.6% |
| Townhome | 13.0% |
| 2–4 units | 2.6% |
| 5–19 units | 3.6% |
| 20+ units | 20.4% |
| Mobile / other | 3.8% |
Businesses in 91311
2,101 business establishments with 35,403 employees (ZIP Codes Business Patterns 2023).
- Manufacturing: 291
- Wholesale Trade: 272
- Professional, Scientific, and Technical Services: 231
- Construction: 196
- Retail Trade: 187
- Health Care and Social Assistance: 178
- Other Services (except Public Administration): 136
- Administrative and Support and Waste Management and Remediation Services: 123
EDDM carrier routes
91311 has 27 USPS carrier routes with 15,522 residential and 2,753 business mailboxes. Open the EDDM route map.
Carrier routes in 91311
91311 has 27 USPS carrier routes (27 city (C)) with 15,522 residential and 2,753 business mailboxes. Routes range from 308 homes (C022) to 966 homes (C035); the median route has 573 homes. The Census counted 14,561 households in 91311 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 11 |
| 500–749 | 12 |
| 750–999 | 4 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 91311 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C030 — USPS business mailboxes 293, 444 homes
- Route C029 — USPS business mailboxes 241, 507 homes
- Route C013 — USPS business mailboxes 225, 479 homes
- Route C002 — USPS business mailboxes 182, 646 homes
- Route C026 — USPS business mailboxes 172, 410 homes
Select these 5 routes on the route map
Every carrier route in 91311
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 854 | 12 | $116,417 | — | — | — |
| C002 | City | 646 | 182 | $154,732 | — | — | — |
| C003 | City | 636 | 51 | $118,299 | — | — | — |
| C005 | City | 485 | 2 | $98,467 | — | — | — |
| C006 | City | 863 | 102 | $98,467 | — | — | — |
| C009 | City | 617 | 1 | $90,448 | — | — | — |
| C010 | City | 757 | 66 | $121,401 | — | — | — |
| C011 | City | 453 | 23 | $124,328 | — | — | — |
| C012 | City | 573 | 31 | $111,032 | — | — | — |
| C013 | City | 479 | 225 | $98,467 | — | — | — |
| C014 | City | 412 | 88 | $98,467 | — | — | — |
| C017 | City | 677 | 65 | $98,467 | — | — | — |
| C018 | City | 413 | 167 | $154,732 | — | — | — |
| C019 | City | 562 | 46 | $102,848 | — | — | — |
| C020 | City | 689 | 79 | $124,328 | — | — | — |
| C021 | City | 483 | 46 | $154,732 | — | — | — |
| C022 | City | 308 | 121 | $74,354 | — | — | — |
| C023 | City | 354 | 156 | $74,354 | — | — | — |
| C024 | City | 720 | 115 | $99,314 | — | — | — |
| C025 | City | 644 | 153 | $98,467 | — | — | — |
| C026 | City | 410 | 172 | $121,401 | — | — | — |
| C029 | City | 507 | 241 | $116,417 | — | — | — |
| C030 | City | 444 | 293 | $99,314 | — | — | — |
| C031 | City | 310 | 94 | $173,241 | — | — | — |
| C033 | City | 643 | 132 | $74,354 | — | — | — |
| C034 | City | 617 | 82 | $154,732 | — | — | — |
| C035 | City | 966 | 8 | $116,417 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 91311 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
- 91326 — Los Angeles city, CA (2.8 mi)
- 91324 — Los Angeles city, CA (4.8 mi)
- 93063 — Simi Valley city, CA (4.9 mi)
- 91304 — Los Angeles city, CA (5.1 mi)
- 91330 — Los Angeles city, CA (5.4 mi)
- 91344 — Los Angeles city, CA (5.6 mi)
- 91381 — Stevenson Ranch CDP, CA (5.6 mi)
- 91306 — Los Angeles city, CA (5.9 mi)
Areas that include 91311
- Los Angeles, CA ZIP codes — 123 ZIP codes
- Chatsworth, CA ZIP codes — 1 ZIP code
- Los Angeles County ZIP codes — 298 ZIP codes
- California ZIP code data
Mail every home in 91311
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.
Los Angeles EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 91311, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 91311 in?
- 91311 is a Chatsworth, CA mailing address. By land area, 35% lies inside Los Angeles; the rest is outside any Census-defined city or community.
- What county is 91311 in?
- 91311 is in Los Angeles County.
- What is the population of 91311?
- About 40,898 people (±2,166), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 39,014.
- What is the median household income in 91311?
- $119,386 (±$6,398), 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 91311?
- 27 USPS carrier routes with 15,522 residential and 2,753 business mailboxes (18,262 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 91311?
- The closest, measured center to center: 91326 (2.8 mi, Los Angeles), 91324 (4.8 mi, Los Angeles), 93063 (4.9 mi, Simi Valley), 91304 (5.1 mi, Los Angeles), 91330 (5.4 mi, Los Angeles) and 91344 (5.6 mi, Los Angeles).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.