What city is 63105 in?

63105 is a Saint Louis, MO mailing address. By land area, 91% lies inside Clayton, 5% lies inside University City and 4% lies inside St. Louis.

What is the population of 63105?

About 18,875 people (±420), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 18,846.

What is the median household income in 63105?

$116,439 (±$13,478), 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 63105?

28 USPS carrier routes with 7,515 residential and 1,240 business mailboxes (8,751 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 63105?

The closest, measured center to center: 63117 (0.9 mi, Richmond Heights), 63130 (1.4 mi, University City), 63144 (2 mi, Brentwood), 63143 (2.3 mi, Maplewood), 63112 (2.6 mi, St. Louis) and 63124 (2.6 mi, Ladue).

63105 ZIP Code, Saint Louis, MO

63105 is a ZIP code in Saint Louis, Missouri in St. Louis County. It covers 2.5 square miles of land. The closest ZIP codes are 63117, 63130 and 63144. 18,875 people live here in 7,088 households. At about 7,508 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (56% own). Median household income is $116,439, well above the Missouri median of $70,702; 25% of residents moved in during the past year.

Quick facts

Mailing city: Saint Louis, MO
County: St. Louis County
Land area: 2.5 sq mi
Population: 18,875
Median household income: $116,439
Carrier routes: 28 (7,515 homes)

Key figures

Measure	Value
Residents	18,875
Households	7,088
Median household income	$116,439
Income per person	$74,142
Median age	31
Homeowners	55.9%
Median home value	$766,300
Median rent	$1,608
Bachelor's degree or higher	85.4%
Average commute (minutes)	16.6
Households with kids under 18	25.7%
Moved in the past year	25.0%
Below the poverty line	8.7%
Broadband internet	95.3%
Speak a non-English language at home	15.0%

Household income

% of households	Value
<$10K	6.7%
$10–15K	1.3%
$15–25K	3.4%
$25–35K	3.4%
$35–50K	6.9%
$50–75K	14.2%
$75–100K	9.1%
$100–150K	15.6%
$150–200K	9.7%
$200K+	29.8%

Age

% of all residents	Value
<10	5.7%
10–19	27.0%
20–24	9.6%
25–34	11.3%
35–44	9.8%
45–54	10.5%
55–64	10.0%
65–74	8.6%
75+	7.5%

Tenure

% of housing units	Value
Owned, with mortgage	28.4%
Owned outright	23.6%
Rented	40.7%
Vacant	7.3%

Type of building

% of housing units	Value
Detached house	32.1%
Townhome	2.8%
2–4 units	15.7%
5–19 units	28.8%
20+ units	20.6%
Mobile / other	0.0%

Businesses in 63105

1,662 business establishments with 32,529 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 402
Finance and Insurance: 273
Management of Companies and Enterprises: 271
Health Care and Social Assistance: 137
Accommodation and Food Services: 112
Real Estate and Rental and Leasing: 111
Other Services (except Public Administration): 110
Administrative and Support and Waste Management and Remediation Services: 53

EDDM carrier routes

63105 has 28 USPS carrier routes with 7,515 residential and 1,240 business mailboxes. Open the EDDM route map.

Carrier routes in 63105

63105 has 28 USPS carrier routes (28 city (C)) with 7,515 residential and 1,240 business mailboxes. Routes range from 1 homes (C092) to 526 homes (C012); the median route has 274 homes. The Census counted 7,088 households in 63105 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	11
250–499	15
500–749	1
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 63105 for…

Most businesses

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

Route C022 — USPS business mailboxes 222, 0 homes
Route C020 — USPS business mailboxes 171, 98 homes
Route C092 — USPS business mailboxes 152, 1 homes
Route C087 — USPS business mailboxes 127, 275 homes
Route C081 — USPS business mailboxes 105, 2 homes

Select these 5 routes on the route map

Every carrier route in 63105

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C002	City	240	2	$104,287	—	—	—
C003	City	268	26	$136,217	—	—	—
C007	City	496	28	$200,001+	—	—	—
C008	City	266	19	$97,491	—	—	—
C011	City	454	74	$125,310	—	—	—
C012	City	526	2	$100,920	—	—	—
C014	City	299	3	$200,001+	—	—	—
C015	City	396	1	$104,287	—	—	—
C016	City	210	9	$200,001+	—	—	—
C018	City	203	6	$97,491	—	—	—
C020	City	98	171	$136,217	—	—	—
C022	City	0	222	$125,310	—	—	—
C024	City	309	0	$104,287	—	—	—
C037	City	462	76	$200,001+	—	—	—
C038	City	224	23	$200,001+	—	—	—
C045	City	275	4	$170,835	—	—	—
C046	City	427	3	$97,491	—	—	—
C052	City	212	26	$200,001+	—	—	—
C077	City	303	20	$136,217	—	—	—
C078	City	409	0	$104,287	—	—	—
C081	City	2	105	$200,001+	—	—	—
C085	City	208	21	$136,217	—	—	—
C087	City	275	127	$104,287	—	—	—
C088	City	249	25	$130,516	—	—	—
C091	City	274	0	$125,310	—	—	—
C092	City	1	152	$136,217	—	—	—
C093	City	153	88	$136,217	—	—	—
C094	City	276	7	$100,920	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 63105 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

63117 — Richmond Heights city, MO (0.9 mi)
63130 — University City city, MO (1.4 mi)
63144 — Brentwood city, MO (2 mi)
63143 — Maplewood city, MO (2.3 mi)
63112 — St. Louis city, MO (2.6 mi)
63124 — Ladue city, MO (2.6 mi)
63133 — Pagedale city, MO (2.9 mi)
63139 — St. Louis city, MO (3.1 mi)

Areas that include 63105

Clayton, MO ZIP codes — 1 ZIP code
Saint Louis, MO ZIP codes — 45 ZIP codes
St. Louis County ZIP codes — 46 ZIP codes
Missouri ZIP code data

Where it ranks

Mail every home in 63105

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) 63105, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 63105 in?: 63105 is a Saint Louis, MO mailing address. By land area, 91% lies inside Clayton, 5% lies inside University City and 4% lies inside St. Louis.
What county is 63105 in?: 63105 is in St. Louis County.
What is the population of 63105?: About 18,875 people (±420), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 18,846.
What is the median household income in 63105?: $116,439 (±$13,478), 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 63105?: 28 USPS carrier routes with 7,515 residential and 1,240 business mailboxes (8,751 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 63105?: The closest, measured center to center: 63117 (0.9 mi, Richmond Heights), 63130 (1.4 mi, University City), 63144 (2 mi, Brentwood), 63143 (2.3 mi, Maplewood), 63112 (2.6 mi, St. Louis) and 63124 (2.6 mi, Ladue).

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