What city is 91320 in?

91320 is a Newbury Park, CA mailing address. By land area, 75% lies inside Thousand Oaks and 2% lies inside Casa Conejo; the rest is outside any Census-defined city or community.

What is the population of 91320?

About 43,472 people (±1,677), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 44,462.

What is the median household income in 91320?

$148,991 (±$7,422), 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 91320?

31 USPS carrier routes with 15,684 residential and 1,324 business mailboxes (17,010 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 91320?

The closest, measured center to center: 93012 (3.2 mi, Camarillo), 91361 (4.5 mi, Thousand Oaks), 91360 (5 mi, Thousand Oaks), 91362 (7.5 mi, Thousand Oaks), 93010 (8.4 mi, Camarillo) and 90265 (9 mi, Malibu).

91320 ZIP Code, Newbury Park, CA

91320 is a ZIP code in Newbury Park, California in Ventura County. It covers 20 square miles of land. The closest ZIP codes are 93012, 91361 and 91360. 43,472 people live here in 15,265 households. At about 2,155 people per square mile it has suburban density, and most homes are owner-occupied (76%). Median household income is $148,991, well above the California median of $99,122.

Quick facts

Mailing city: Newbury Park, CA
County: Ventura County
Land area: 20 sq mi
Population: 43,472
Median household income: $148,991
Carrier routes: 31 (15,684 homes)

Key figures

Measure	Value
Residents	43,472
Households	15,265
Median household income	$148,991
Income per person	$65,677
Median age	43.3
Homeowners	76.1%
Median home value	$948,100
Median rent	$2,772
Bachelor's degree or higher	54.3%
Average commute (minutes)	24.9
Households with kids under 18	34.1%
Moved in the past year	6.4%
Below the poverty line	7.2%
Broadband internet	96.3%
Speak a non-English language at home	23.2%

Household income

% of households	Value
<$10K	2.4%
$10–15K	2.2%
$15–25K	1.3%
$25–35K	3.6%
$35–50K	4.6%
$50–75K	12.1%
$75–100K	7.2%
$100–150K	17.1%
$150–200K	13.8%
$200K+	35.7%

Age

% of all residents	Value
<10	11.0%
10–19	13.7%
20–24	6.1%
25–34	9.1%
35–44	11.9%
45–54	14.4%
55–64	15.0%
65–74	11.0%
75+	7.9%

Tenure

% of housing units	Value
Owned, with mortgage	54.0%
Owned outright	20.6%
Rented	23.1%
Vacant	2.3%

Type of building

% of housing units	Value
Detached house	74.9%
Townhome	7.9%
2–4 units	3.0%
5–19 units	5.3%
20+ units	4.0%
Mobile / other	4.9%

Businesses in 91320

1,341 business establishments with 23,516 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 202
Construction: 183
Health Care and Social Assistance: 144
Accommodation and Food Services: 108
Retail Trade: 104
Wholesale Trade: 86
Other Services (except Public Administration): 81
Manufacturing: 74

EDDM carrier routes

91320 has 31 USPS carrier routes with 15,684 residential and 1,324 business mailboxes. Open the EDDM route map.

Carrier routes in 91320

91320 has 31 USPS carrier routes (26 city (C), 5 rural (R)) with 15,684 residential and 1,324 business mailboxes. Routes range from 154 homes (C018) to 1,151 homes (C013); the median route has 497 homes. The Census counted 15,265 households in 91320 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	15
500–749	13
750–999	1
1,000–1,499	1
1,500+	0

Best routes in 91320 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C010 — USPS business mailboxes 302, 333 homes
Route C023 — USPS business mailboxes 286, 274 homes
Route C018 — USPS business mailboxes 259, 154 homes
Route C034 — USPS business mailboxes 137, 382 homes
Route C007 — USPS business mailboxes 67, 375 homes

Select these 5 routes on the route map

Every carrier route in 91320

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	797	2	$77,648	—	—	—
C003	City	515	1	$160,951	—	—	—
C004	City	422	7	$160,951	—	—	—
C005	City	482	0	$200,001+	—	—	—
C006	City	497	22	$151,082	—	—	—
C007	City	375	67	$200,001+	—	—	—
C008	City	455	1	$131,252	—	—	—
C009	City	428	1	$200,001+	—	—	—
C010	City	333	302	$117,996	—	—	—
C011	City	637	0	$110,856	—	—	—
C013	City	1,151	4	$110,856	—	—	—
C014	City	516	0	$198,370	—	—	—
C015	City	432	51	$141,889	—	—	—
C016	City	576	0	$142,172	—	—	—
C017	City	479	31	$69,237	—	—	—
C018	City	154	259	$117,996	—	—	—
C019	City	609	0	$119,875	—	—	—
C021	City	485	7	$160,553	—	—	—
C023	City	274	286	$110,856	—	—	—
C025	City	548	1	$77,648	—	—	—
C026	City	397	1	$200,001+	—	—	—
C027	City	600	20	$198,370	—	—	—
C028	City	497	1	$160,553	—	—	—
C033	City	336	0	$151,082	—	—	—
C034	City	382	137	$142,172	—	—	—
C035	City	538	52	$159,984	—	—	—
R003	Rural	538	1	$200,001+	—	—	—
R006	Rural	597	2	$200,001+	—	—	—
R007	Rural	526	39	$200,001+	—	—	—
R008	Rural	523	29	$170,708	—	—	—
R009	Rural	585	0	$200,001+	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 91320 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

93012 — Camarillo city, CA (3.2 mi)
91361 — Thousand Oaks city, CA (4.5 mi)
91360 — Thousand Oaks city, CA (5 mi)
91362 — Thousand Oaks city, CA (7.5 mi)
93010 — Camarillo city, CA (8.4 mi)
90265 — Malibu city, CA (9 mi)
93066 — Somis CDP, CA (9.4 mi)
93021 — Moorpark city, CA (9.8 mi)

Areas that include 91320

Thousand Oaks, CA ZIP codes — 4 ZIP codes
Casa Conejo, CA ZIP codes — 1 ZIP code
Newbury Park, CA ZIP codes — 1 ZIP code
Ventura County ZIP codes — 33 ZIP codes
California ZIP code data

Where it ranks

Mail every home in 91320

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) 91320, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 91320 in?: 91320 is a Newbury Park, CA mailing address. By land area, 75% lies inside Thousand Oaks and 2% lies inside Casa Conejo; the rest is outside any Census-defined city or community.
What county is 91320 in?: 91320 is in Ventura County.
What is the population of 91320?: About 43,472 people (±1,677), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 44,462.
What is the median household income in 91320?: $148,991 (±$7,422), 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 91320?: 31 USPS carrier routes with 15,684 residential and 1,324 business mailboxes (17,010 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 91320?: The closest, measured center to center: 93012 (3.2 mi, Camarillo), 91361 (4.5 mi, Thousand Oaks), 91360 (5 mi, Thousand Oaks), 91362 (7.5 mi, Thousand Oaks), 93010 (8.4 mi, Camarillo) and 90265 (9 mi, Malibu).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.