63376 ZIP Code, Saint Peters, MO

63376 is a ZIP code in Saint Peters, Missouri in St. Charles County. It covers 40 square miles of land. The closest ZIP codes are 63303, 63368 and 63366. 74,962 people live here in 30,034 households, which puts it among the most populous 1% of Missouri ZIP codes. At about 1,868 people per square mile it has suburban density, and most homes are owner-occupied (81%). Median household income is $96,393, above the Missouri median of $70,702.

Quick facts

Key figures

MeasureValue
Residents74,962
Households30,034
Median household income$96,393
Income per person$46,330
Median age40.9
Homeowners81.3%
Median home value$275,400
Median rent$1,349
Bachelor's degree or higher38.8%
Average commute (minutes)23.2
Households with kids under 1829.4%
Moved in the past year8.4%
Below the poverty line4.7%
Broadband internet94.6%
Speak a non-English language at home3.8%

Household income

% of householdsValue
<$10K2.0%
$10–15K1.3%
$15–25K4.1%
$25–35K4.2%
$35–50K10.2%
$50–75K17.1%
$75–100K13.4%
$100–150K22.3%
$150–200K13.9%
$200K+11.5%

Age

% of all residentsValue
<1011.8%
10–1912.0%
20–245.6%
25–3412.1%
35–4414.4%
45–5411.5%
55–6414.3%
65–7411.7%
75+6.7%

Tenure

% of housing unitsValue
Owned, with mortgage56.2%
Owned outright22.4%
Rented17.8%
Vacant3.6%

Type of building

% of housing unitsValue
Detached house74.6%
Townhome7.3%
2–4 units6.2%
5–19 units6.4%
20+ units3.7%
Mobile / other1.8%

Businesses in 63376

1,722 business establishments with 32,381 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

63376 has 48 USPS carrier routes with 31,724 residential and 1,834 business mailboxes. Open the EDDM route map.

Carrier routes in 63376

63376 has 48 USPS carrier routes (5 city (C), 43 rural (R)) with 31,724 residential and 1,834 business mailboxes. Routes range from 117 homes (R048) to 985 homes (R009); the median route has 682 homes. The Census counted 30,034 households in 63376 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4993
500–74938
750–9996
1,000–1,4990
1,500+0

Best routes in 63376 for…

Most businesses

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

  1. Route R024 — USPS business mailboxes 200, 690 homes
  2. Route C003 — USPS business mailboxes 149, 498 homes
  3. Route R043 — USPS business mailboxes 141, 652 homes
  4. Route C002 — USPS business mailboxes 140, 507 homes
  5. Route R048 — USPS business mailboxes 131, 117 homes

Select these 5 routes on the route map

Every carrier route in 63376

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City73247$66,169———
C002City507140$66,169———
C003City498149$66,169———
C004City356102$130,708———
C005City80292$87,867———
R001Rural393125$73,363———
R002Rural63933$162,415———
R003Rural66137$102,595———
R004Rural7113$101,677———
R005Rural95328$40,628———
R007Rural7010$71,780———
R008Rural6960$113,519———
R009Rural98539$111,164———
R010Rural7240$100,606———
R011Rural67218$102,595———
R012Rural7275$87,793———
R014Rural74311$106,014———
R015Rural68314$105,530———
R016Rural6052$95,178———
R017Rural7528$71,780———
R018Rural7171$102,595———
R021Rural58096$120,894———
R022Rural6611$89,168———
R023Rural7121$134,375———
R024Rural690200$106,677———
R025Rural71584$87,793———
R026Rural7110$71,139———
R028Rural6810$106,014———
R029Rural6481$106,125———
R030Rural74210$65,794———
R031Rural5360$98,999———
R032Rural612112$118,214———
R033Rural7440$101,677———
R034Rural6591$89,168———
R035Rural6540$162,415———
R036Rural78925$103,987———
R037Rural5930$100,606———
R038Rural6842$87,793———
R039Rural6426$118,602———
R040Rural74486$104,489———
R041Rural6120$177,060———
R042Rural82611$120,894———
R043Rural652141$54,299———
R044Rural5210$147,225———
R045Rural6220$101,677———
R046Rural74365$155,084———
R047Rural5777$130,815———
R048Rural117131$159,395———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 63376 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

Areas that include 63376

Where it ranks

Mail every home in 63376

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) 63376, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 63376 in?
63376 is a Saint Peters, MO mailing address. By land area, 48% lies inside St. Peters, 5% lies inside O'Fallon and 3% lies inside Cottleville; the rest is outside any Census-defined city or community.
What county is 63376 in?
63376 is in St. Charles County.
What is the population of 63376?
About 74,962 people (±1,479), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 76,064.
What is the median household income in 63376?
$96,393 (±$3,522), 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 63376?
48 USPS carrier routes with 31,724 residential and 1,834 business mailboxes (33,562 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 63376?
The closest, measured center to center: 63303 (5.6 mi, St. Charles), 63368 (7.1 mi, O'Fallon), 63366 (7.2 mi, O'Fallon), 63304 (7.7 mi, Weldon Spring), 62036 (8.2 mi) and 63045 (8.3 mi, Bridgeton).

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