90740 ZIP Code, Seal Beach, CA
90740 is a ZIP code in Seal Beach, California in Orange County. It covers 11 square miles of land. The closest ZIP codes are 90743, 90742 and 92649. 24,254 people live here in 12,642 households. At about 2,183 people per square mile it has suburban density, and most homes are owner-occupied (77%). Median household income is $85,347, below the California median of $99,122; the median age is 61.6, older than most ZIP codes.
Quick facts
- Mailing city: Seal Beach, CA
- County: Orange County
- Land area: 11 sq mi
- Population: 24,254
- Median household income: $85,347
- Carrier routes: 27 (13,914 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 24,254 |
| Households | 12,642 |
| Median household income | $85,347 |
| Income per person | $68,037 |
| Median age | 61.6 |
| Homeowners | 76.9% |
| Median home value | $484,100 |
| Median rent | $2,652 |
| Bachelor's degree or higher | 51.4% |
| Average commute (minutes) | 29 |
| Households with kids under 18 | 14.3% |
| Moved in the past year | 10.3% |
| Below the poverty line | 6.7% |
| Broadband internet | 90.9% |
| Speak a non-English language at home | 20.5% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.8% |
| $10–15K | 1.5% |
| $15–25K | 6.7% |
| $25–35K | 11.5% |
| $35–50K | 9.7% |
| $50–75K | 12.7% |
| $75–100K | 9.6% |
| $100–150K | 14.4% |
| $150–200K | 10.1% |
| $200K+ | 19.9% |
Age
| % of all residents | Value |
|---|---|
| <10 | 6.8% |
| 10–19 | 7.1% |
| 20–24 | 2.8% |
| 25–34 | 8.6% |
| 35–44 | 7.5% |
| 45–54 | 8.8% |
| 55–64 | 14.4% |
| 65–74 | 21.0% |
| 75+ | 23.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 21.6% |
| Owned outright | 47.0% |
| Rented | 20.3% |
| Vacant | 11.1% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 34.8% |
| Townhome | 21.8% |
| 2–4 units | 6.3% |
| 5–19 units | 26.3% |
| 20+ units | 10.1% |
| Mobile / other | 0.6% |
Businesses in 90740
766 business establishments with 11,439 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 139
- Health Care and Social Assistance: 115
- Accommodation and Food Services: 98
- Retail Trade: 78
- Finance and Insurance: 78
- Other Services (except Public Administration): 64
- Real Estate and Rental and Leasing: 48
- Wholesale Trade: 36
EDDM carrier routes
90740 has 27 USPS carrier routes with 13,914 residential and 610 business mailboxes. Open the EDDM route map.
Carrier routes in 90740
90740 has 27 USPS carrier routes (27 city (C)) with 13,914 residential and 610 business mailboxes. Routes range from 286 homes (C034) to 920 homes (C033); the median route has 548 homes. The Census counted 12,642 households in 90740 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 12 |
| 500–749 | 14 |
| 750–999 | 1 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 90740 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C024 — USPS business mailboxes 112, 576 homes
- Route C005 — USPS business mailboxes 97, 306 homes
- Route C031 — USPS business mailboxes 79, 529 homes
- Route C034 — USPS business mailboxes 63, 286 homes
- Route C001 — USPS business mailboxes 57, 601 homes
Select these 5 routes on the route map
Every carrier route in 90740
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 601 | 57 | $164,265 | — | — | — |
| C002 | City | 591 | 23 | $122,702 | — | — | — |
| C003 | City | 548 | 9 | $124,934 | — | — | — |
| C004 | City | 336 | 45 | $122,702 | — | — | — |
| C005 | City | 306 | 97 | $85,813 | — | — | — |
| C006 | City | 608 | 0 | $36,669 | — | — | — |
| C007 | City | 664 | 0 | $52,923 | — | — | — |
| C008 | City | 622 | 2 | $155,062 | — | — | — |
| C009 | City | 595 | 2 | $155,062 | — | — | — |
| C011 | City | 609 | 0 | $36,956 | — | — | — |
| C014 | City | 582 | 1 | $36,669 | — | — | — |
| C015 | City | 559 | 0 | $36,956 | — | — | — |
| C016 | City | 466 | 2 | $36,956 | — | — | — |
| C017 | City | 575 | 0 | $36,956 | — | — | — |
| C019 | City | 494 | 0 | $52,923 | — | — | — |
| C023 | City | 303 | 36 | $155,062 | — | — | — |
| C024 | City | 576 | 112 | $122,702 | — | — | — |
| C025 | City | 432 | 19 | $155,062 | — | — | — |
| C026 | City | 411 | 0 | $200,001+ | — | — | — |
| C028 | City | 440 | 35 | $85,813 | — | — | — |
| C029 | City | 418 | 6 | $155,062 | — | — | — |
| C030 | City | 367 | 0 | $166,066 | — | — | — |
| C031 | City | 529 | 79 | $110,518 | — | — | — |
| C032 | City | 486 | 20 | $122,702 | — | — | — |
| C033 | City | 920 | 2 | $122,702 | — | — | — |
| C034 | City | 286 | 63 | $174,913 | — | — | — |
| C035 | City | 590 | 0 | $52,923 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 90740 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
- 90743 — Seal Beach city, CA (2 mi)
- 90742 — Huntington Beach city, CA (2.3 mi)
- 92649 — Huntington Beach city, CA (2.8 mi)
- 90720 — Los Alamitos city, CA (2.9 mi)
- 90822 — Long Beach city, CA (3.1 mi)
- 92845 — Garden Grove city, CA (3.3 mi)
- 90803 — Long Beach city, CA (3.4 mi)
- 90840 — Long Beach city, CA (3.5 mi)
Areas that include 90740
- Seal Beach, CA ZIP codes — 2 ZIP codes
- Orange County ZIP codes — 89 ZIP codes
- California ZIP code data
Where it ranks
- No. 12 of 85: highest share of owner-occupied homes in Orange County
- No. 2 of 85: highest median age in Orange County
Mail every home in 90740
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) 90740, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 90740 in?
- 90740 is a Seal Beach, CA mailing address. By land area, 100% lies inside Seal Beach.
- What county is 90740 in?
- 90740 is in Orange County.
- What is the population of 90740?
- About 24,254 people (±246), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 24,769.
- What is the median household income in 90740?
- $85,347 (±$8,344), 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 90740?
- 27 USPS carrier routes with 13,914 residential and 610 business mailboxes (14,524 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 90740?
- The closest, measured center to center: 90743 (2 mi, Seal Beach), 90742 (2.3 mi, Huntington Beach), 92649 (2.8 mi, Huntington Beach), 90720 (2.9 mi, Los Alamitos), 90822 (3.1 mi, Long Beach) and 92845 (3.3 mi, Garden Grove).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.