63043 ZIP Code, Maryland Heights, MO
63043 is a ZIP code in Maryland Heights, Missouri in St. Louis County. It covers 13 square miles of land. The closest ZIP codes are 63146, 63045 and 63044. 21,924 people live here in 9,402 households, more than in 9 of every 10 Missouri ZIP codes. At about 1,747 people per square mile it has suburban density, and owners and renters are mixed (70% own). Median household income is $91,509, above the Missouri median of $70,702.
Quick facts
- Mailing city: Maryland Heights, MO
- County: St. Louis County
- Land area: 13 sq mi
- Population: 21,924
- Median household income: $91,509
- Carrier routes: 22 (9,703 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 21,924 |
| Households | 9,402 |
| Median household income | $91,509 |
| Income per person | $44,325 |
| Median age | 37.1 |
| Homeowners | 69.6% |
| Median home value | $227,600 |
| Median rent | $1,283 |
| Bachelor's degree or higher | 45.5% |
| Average commute (minutes) | 21.4 |
| Households with kids under 18 | 26.2% |
| Moved in the past year | 14.1% |
| Below the poverty line | 3.8% |
| Broadband internet | 96.7% |
| Speak a non-English language at home | 21.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.5% |
| $10–15K | 1.4% |
| $15–25K | 5.0% |
| $25–35K | 3.9% |
| $35–50K | 11.6% |
| $50–75K | 16.5% |
| $75–100K | 15.8% |
| $100–150K | 25.3% |
| $150–200K | 11.6% |
| $200K+ | 7.5% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.0% |
| 10–19 | 9.7% |
| 20–24 | 6.2% |
| 25–34 | 18.1% |
| 35–44 | 15.6% |
| 45–54 | 12.6% |
| 55–64 | 11.8% |
| 65–74 | 9.1% |
| 75+ | 5.9% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 46.4% |
| Owned outright | 21.8% |
| Rented | 29.3% |
| Vacant | 2.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 64.8% |
| Townhome | 4.5% |
| 2–4 units | 6.1% |
| 5–19 units | 18.3% |
| 20+ units | 5.2% |
| Mobile / other | 1.0% |
Businesses in 63043
791 business establishments with 26,758 employees (ZIP Codes Business Patterns 2023).
- Wholesale Trade: 137
- Construction: 69
- Administrative and Support and Waste Management and Remediation Services: 63
- Accommodation and Food Services: 63
- Retail Trade: 62
- Manufacturing: 61
- Other Services (except Public Administration): 61
- Professional, Scientific, and Technical Services: 59
EDDM carrier routes
63043 has 22 USPS carrier routes with 9,703 residential and 890 business mailboxes. Open the EDDM route map.
Carrier routes in 63043
63043 has 22 USPS carrier routes (21 city (C), 1 rural (R)) with 9,703 residential and 890 business mailboxes. Routes range from 37 homes (R002) to 651 homes (C060); the median route has 454 homes. The Census counted 9,402 households in 63043 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 2 |
| 250–499 | 13 |
| 500–749 | 7 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 63043 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C011 — USPS business mailboxes 172, 129 homes
- Route C049 — USPS business mailboxes 171, 279 homes
- Route C022 — USPS business mailboxes 98, 354 homes
- Route C026 — USPS business mailboxes 74, 497 homes
- Route C037 — USPS business mailboxes 68, 463 homes
Select these 5 routes on the route map
Every carrier route in 63043
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C010 | City | 321 | 37 | $102,308 | — | — | — |
| C011 | City | 129 | 172 | $103,920 | — | — | — |
| C016 | City | 514 | 0 | $102,467 | — | — | — |
| C019 | City | 361 | 17 | $104,573 | — | — | — |
| C022 | City | 354 | 98 | $103,920 | — | — | — |
| C025 | City | 444 | 44 | $102,308 | — | — | — |
| C026 | City | 497 | 74 | $103,920 | — | — | — |
| C027 | City | 614 | 0 | $67,392 | — | — | — |
| C030 | City | 417 | 29 | $83,893 | — | — | — |
| C037 | City | 463 | 68 | $103,920 | — | — | — |
| C039 | City | 436 | 8 | $67,392 | — | — | — |
| C040 | City | 414 | 18 | $136,480 | — | — | — |
| C046 | City | 482 | 7 | $102,308 | — | — | — |
| C049 | City | 279 | 171 | $103,920 | — | — | — |
| C054 | City | 649 | 12 | $102,467 | — | — | — |
| C055 | City | 411 | 10 | $104,573 | — | — | — |
| C060 | City | 651 | 10 | $108,376 | — | — | — |
| C061 | City | 567 | 0 | $102,467 | — | — | — |
| C069 | City | 582 | 0 | $78,788 | — | — | — |
| C072 | City | 486 | 65 | $83,893 | — | — | — |
| C074 | City | 595 | 12 | $103,920 | — | — | — |
| R002 | Rural | 37 | 38 | $93,413 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 63043 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
- 63146 — Maryland Heights city, MO (2.4 mi)
- 63045 — Bridgeton city, MO (2.8 mi)
- 63044 — Bridgeton city, MO (3.3 mi)
- 63074 — St. Ann city, MO (3.6 mi)
- 63303 — St. Charles city, MO (4.8 mi)
- 63141 — Creve Coeur city, MO (4.9 mi)
- 63114 — Overland city, MO (5.3 mi)
- 63042 — Hazelwood city, MO (5.4 mi)
Areas that include 63043
- Maryland Heights, MO ZIP codes — 2 ZIP codes
- Champ, MO ZIP codes — 1 ZIP code
- St. Louis County ZIP codes — 46 ZIP codes
- Missouri ZIP code data
Where it ranks
- No. 12 of 44: highest share of residents who moved in during the past year in St. Louis County
- No. 14 of 44: lowest median age in St. Louis County
Mail every home in 63043
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) 63043, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 63043 in?
- 63043 is a Maryland Heights, MO mailing address. By land area, 93% lies inside Maryland Heights and 6% lies inside Champ.
- What county is 63043 in?
- 63043 is in St. Louis County.
- What is the population of 63043?
- About 21,924 people (±663), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 22,362.
- What is the median household income in 63043?
- $91,509 (±$6,565), compared with $70,702 for Missouri as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 63043?
- 22 USPS carrier routes with 9,703 residential and 890 business mailboxes (10,597 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 63043?
- The closest, measured center to center: 63146 (2.4 mi, Maryland Heights), 63045 (2.8 mi, Bridgeton), 63044 (3.3 mi, Bridgeton), 63074 (3.6 mi, St. Ann), 63303 (4.8 mi, St. Charles) and 63141 (4.9 mi, Creve Coeur).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.