90621 ZIP Code, Buena Park, CA
90621 is a ZIP code in Buena Park, California in Orange County. It covers 4.2 square miles of land. The closest ZIP codes are 92833, 90638 and 90620. 35,984 people live here in 10,977 households. At about 8,584 people per square mile it is built up to city-neighborhood density, and most households rent (35% own). Median household income is $97,612, close to the California median of $99,122.
Quick facts
- Mailing city: Buena Park, CA
- County: Orange County
- Land area: 4.2 sq mi
- Population: 35,984
- Median household income: $97,612
- Carrier routes: 18 (11,875 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 35,984 |
| Households | 10,977 |
| Median household income | $97,612 |
| Income per person | $37,724 |
| Median age | 36.2 |
| Homeowners | 34.8% |
| Median home value | $832,000 |
| Median rent | $2,167 |
| Bachelor's degree or higher | 32.7% |
| Average commute (minutes) | 29.5 |
| Households with kids under 18 | 36.5% |
| Moved in the past year | 10.5% |
| Below the poverty line | 10.1% |
| Broadband internet | 95.2% |
| Speak a non-English language at home | 61.9% |
Household income
| % of households | Value |
|---|---|
| <$10K | 4.8% |
| $10–15K | 1.7% |
| $15–25K | 2.2% |
| $25–35K | 4.3% |
| $35–50K | 8.1% |
| $50–75K | 16.9% |
| $75–100K | 13.2% |
| $100–150K | 21.9% |
| $150–200K | 11.8% |
| $200K+ | 15.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 12.4% |
| 10–19 | 12.5% |
| 20–24 | 7.3% |
| 25–34 | 16.4% |
| 35–44 | 14.2% |
| 45–54 | 12.2% |
| 55–64 | 13.2% |
| 65–74 | 7.2% |
| 75+ | 4.6% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 22.5% |
| Owned outright | 11.7% |
| Rented | 63.4% |
| Vacant | 2.3% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 31.4% |
| Townhome | 17.6% |
| 2–4 units | 11.8% |
| 5–19 units | 20.6% |
| 20+ units | 17.0% |
| Mobile / other | 1.6% |
Businesses in 90621
1,170 business establishments with 11,275 employees (ZIP Codes Business Patterns 2023).
- Accommodation and Food Services: 160
- Retail Trade: 146
- Health Care and Social Assistance: 126
- Wholesale Trade: 116
- Professional, Scientific, and Technical Services: 105
- Other Services (except Public Administration): 97
- Construction: 85
- Transportation and Warehousing: 65
EDDM carrier routes
90621 has 18 USPS carrier routes with 11,875 residential and 1,335 business mailboxes. Open the EDDM route map.
Carrier routes in 90621
90621 has 18 USPS carrier routes (18 city (C)) with 11,875 residential and 1,335 business mailboxes. Routes range from 413 homes (C045) to 907 homes (C003); the median route has 642 homes. The Census counted 10,977 households in 90621 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 2 |
| 500–749 | 10 |
| 750–999 | 6 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 90621 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C030 — USPS business mailboxes 284, 597 homes
- Route C033 — USPS business mailboxes 276, 651 homes
- Route C055 — USPS business mailboxes 175, 813 homes
- Route C044 — USPS business mailboxes 110, 663 homes
- Route C003 — USPS business mailboxes 96, 907 homes
Select these 5 routes on the route map
Every carrier route in 90621
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 807 | 1 | $80,727 | — | — | — |
| C002 | City | 531 | 36 | $110,687 | — | — | — |
| C003 | City | 907 | 96 | $79,750 | — | — | — |
| C004 | City | 750 | 21 | $104,399 | — | — | — |
| C015 | City | 881 | 50 | $102,829 | — | — | — |
| C023 | City | 683 | 32 | $101,827 | — | — | — |
| C030 | City | 597 | 284 | $101,827 | — | — | — |
| C031 | City | 843 | 50 | $72,004 | — | — | — |
| C033 | City | 651 | 276 | $102,829 | — | — | — |
| C034 | City | 559 | 81 | $79,750 | — | — | — |
| C042 | City | 632 | 1 | $95,753 | — | — | — |
| C044 | City | 663 | 110 | $101,827 | — | — | — |
| C045 | City | 413 | 1 | $145,983 | — | — | — |
| C048 | City | 585 | 4 | $95,753 | — | — | — |
| C055 | City | 813 | 175 | $80,727 | — | — | — |
| C077 | City | 523 | 39 | $110,687 | — | — | — |
| C078 | City | 496 | 6 | $72,004 | — | — | — |
| C079 | City | 541 | 72 | $61,825 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 90621 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
- 92833 — Fullerton city, CA (1.9 mi)
- 90638 — La Mirada city, CA (2.1 mi)
- 90620 — Buena Park city, CA (2.4 mi)
- 90639 — La Mirada city, CA (2.5 mi)
- 90623 — La Palma city, CA (3.1 mi)
- 92801 — Anaheim city, CA (3.1 mi)
- 92832 — Fullerton city, CA (3.7 mi)
- 90604 — South Whittier CDP, CA (3.9 mi)
Areas that include 90621
- Buena Park, CA ZIP codes — 2 ZIP codes
- Orange County ZIP codes — 89 ZIP codes
- California ZIP code data
Where it ranks
- No. 21 of 85: highest share of households with children in Orange County
- No. 19 of 85: lowest median age in Orange County
Mail every home in 90621
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) 90621, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 90621 in?
- 90621 is a Buena Park, CA mailing address. By land area, 99% lies inside Buena Park and 1% lies inside Fullerton.
- What county is 90621 in?
- 90621 is in Orange County.
- What is the population of 90621?
- About 35,984 people (±1,872), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,972.
- What is the median household income in 90621?
- $97,612 (±$9,573), 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 90621?
- 18 USPS carrier routes with 11,875 residential and 1,335 business mailboxes (13,210 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 90621?
- The closest, measured center to center: 92833 (1.9 mi, Fullerton), 90638 (2.1 mi, La Mirada), 90620 (2.4 mi, Buena Park), 90639 (2.5 mi, La Mirada), 90623 (3.1 mi, La Palma) and 92801 (3.1 mi, Anaheim).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.