63120 ZIP Code, Saint Louis, MO
63120 is a ZIP code in Saint Louis, Missouri — mostly in St. Louis city (94% of its land), with smaller parts in St. Louis County. It covers 2.4 square miles of land. The closest ZIP codes are 63115, 63112 and 63113. 6,790 people live here in 2,722 households. At about 2,848 people per square mile it has suburban density, and owners and renters are mixed (46% own). Median household income is $35,176, well below the Missouri median of $70,702.
Quick facts
- Mailing city: Saint Louis, MO
- County: St. Louis city County
- Land area: 2.4 sq mi
- Population: 6,790
- Median household income: $35,176
- Carrier routes: 8 (2,923 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 6,790 |
| Households | 2,722 |
| Median household income | $35,176 |
| Income per person | $20,338 |
| Median age | 33.8 |
| Homeowners | 46.1% |
| Median home value | $53,500 |
| Median rent | $924 |
| Bachelor's degree or higher | 10.1% |
| Average commute (minutes) | 22.8 |
| Households with kids under 18 | 37.3% |
| Moved in the past year | 15.5% |
| Below the poverty line | 37.0% |
| Broadband internet | 84.2% |
| Speak a non-English language at home | 3.3% |
Household income
| % of households | Value |
|---|---|
| <$10K | 19.0% |
| $10–15K | 8.2% |
| $15–25K | 10.1% |
| $25–35K | 12.3% |
| $35–50K | 16.3% |
| $50–75K | 13.0% |
| $75–100K | 7.7% |
| $100–150K | 11.7% |
| $150–200K | 1.2% |
| $200K+ | 0.4% |
Age
| % of all residents | Value |
|---|---|
| <10 | 14.7% |
| 10–19 | 15.9% |
| 20–24 | 5.4% |
| 25–34 | 15.4% |
| 35–44 | 11.3% |
| 45–54 | 11.2% |
| 55–64 | 9.0% |
| 65–74 | 9.1% |
| 75+ | 8.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 10.5% |
| Owned outright | 20.9% |
| Rented | 36.7% |
| Vacant | 31.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 66.2% |
| Townhome | 1.6% |
| 2–4 units | 13.9% |
| 5–19 units | 15.8% |
| 20+ units | 0.7% |
| Mobile / other | 1.9% |
Businesses in 63120
143 business establishments with 2,846 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 48
- Wholesale Trade: 13
- Transportation and Warehousing: 13
- Other Services (except Public Administration): 11
- Retail Trade: 10
- Accommodation and Food Services: 10
- Manufacturing: 8
- Professional, Scientific, and Technical Services: 8
EDDM carrier routes
63120 has 8 USPS carrier routes with 2,923 residential and 192 business mailboxes. Open the EDDM route map.
Carrier routes in 63120
63120 has 8 USPS carrier routes (8 city (C)) with 2,923 residential and 192 business mailboxes. Routes range from 235 homes (C023) to 479 homes (C006); the median route has 369 homes. The Census counted 2,722 households in 63120 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 7 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 63120 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C056 — USPS business mailboxes 46, 369 homes
- Route C023 — USPS business mailboxes 36, 235 homes
- Route C012 — USPS business mailboxes 32, 314 homes
- Route C005 — USPS business mailboxes 26, 399 homes
- Route C082 — USPS business mailboxes 15, 369 homes
Select these 5 routes on the route map
Every carrier route in 63120
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C005 | City | 399 | 26 | $38,615 | — | — | — |
| C006 | City | 479 | 14 | $28,899 | — | — | — |
| C012 | City | 314 | 32 | $42,843 | — | — | — |
| C023 | City | 235 | 36 | $23,088 | — | — | — |
| C056 | City | 369 | 46 | $33,878 | — | — | — |
| C070 | City | 358 | 13 | $32,234 | — | — | — |
| C082 | City | 369 | 15 | $51,026 | — | — | — |
| C084 | City | 400 | 10 | $38,526 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 63120 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
- 63115 — St. Louis city, MO (1.3 mi)
- 63112 — St. Louis city, MO (2.4 mi)
- 63113 — St. Louis city, MO (2.4 mi)
- 63121 — Normandy city, MO (2.4 mi)
- 63133 — Pagedale city, MO (2.5 mi)
- 63147 — St. Louis city, MO (2.5 mi)
- 63108 — St. Louis city, MO (3.2 mi)
- 63107 — St. Louis city, MO (3.3 mi)
Areas that include 63120
- St. Louis, MO ZIP codes — 21 ZIP codes
- Pine Lawn, MO ZIP codes — 2 ZIP codes
- Saint Louis, MO ZIP codes — 45 ZIP codes
- St. Louis city County ZIP codes — 21 ZIP codes
- Missouri ZIP code data
Where it ranks
- No. 1 of 20: highest share of households with children in St. Louis city
- No. 6 of 20: lowest median age in St. Louis city
- No. 2 of 44: highest share of households with children in Saint Louis, MO
- No. 10 of 44: lowest median age in Saint Louis, MO
Mail every home in 63120
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.
St. Louis EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 63120, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 63120 in?
- 63120 is a Saint Louis, MO mailing address. By land area, 94% lies inside St. Louis and 6% lies inside Pine Lawn.
- What county is 63120 in?
- 63120 is mostly in St. Louis city (94% of its land), with smaller parts in St. Louis County.
- What is the population of 63120?
- About 6,790 people (±943), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 7,213.
- What is the median household income in 63120?
- $35,176 (±$7,555), 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 63120?
- 8 USPS carrier routes with 2,923 residential and 192 business mailboxes (3,115 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 63120?
- The closest, measured center to center: 63115 (1.3 mi, St. Louis), 63112 (2.4 mi, St. Louis), 63113 (2.4 mi, St. Louis), 63121 (2.4 mi, Normandy), 63133 (2.5 mi, Pagedale) and 63147 (2.5 mi, St. Louis).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.