Residential delivery area · Missouri
ZIP Code 63376: Saint Peters, MO
ZIP code 63376 uses the postal name Saint Peters, Missouri and lies entirely in St. Charles County (Census 2020 ZIP-county file). About 75,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $96,393 (Census Bureau, ACS 2020-2024). By Census place, its land lies in St. Peters (48%) and O'Fallon (5%), and 4% in smaller places; 43% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Peters · its only residential ZIP
- County
- St. Charles County
- Census places
- St. Peters (48%); O'Fallon (5%)
- Metro area
- St. Louis, MO-IL
- House districts
- MO-3 (98%), MO-2 (2%) 119th Congress, by share of land
- State
- Missouri
- Time zone
- Central
- Land area
- 40.1 sq mi · 1,868 people per sq mi
Where is ZIP code 63376?
63376 centers on 38.801°, -90.612° and covers 40.1 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 63303, 63368, 63366, 63304, 63301.
The map draws ZIP code areas only. For the streets inside 63376, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 63376 compare with the rest of St. Charles County?
| Measure | 63376 | In St. Charles County | In MO |
|---|---|---|---|
| People (ACS 2020-2024) | 74,962 | 1st of 15 | 1st of 1,035 |
| Median household income | $96k | 9th of 11 | 55th of 479 |
| Median home value | $275k | 11th of 12 | 103rd of 494 |
Its median household income is higher than in 79% of U.S. residential ZIP codes, and it is denser than 84% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 63376?
The 2020 Census counted 76,064 people in 63376; the ACS, which samples households over 2020-2024, estimates 74,962. Between the 2010 and 2020 censuses its population grew 7.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 74,962
- 2020 Census count
- 76,064+7.4% since 2010 (70,828)
- Households
- 30,034
- Median age
- 40.9
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 63376?
Of the 74,962 people the ACS estimates in 63376, 21.6% are under 18 and 18.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.2%).
- Under 1821.6%
- 18 to 6460.0%
- 65 and older18.4%
- White, not Hispanic85.2%
- Other or two or more5.9%
- Black, not Hispanic4.3%
- Hispanic or Latino2.5%
- Asian, not Hispanic2.1%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 63376 earn?
Median household income is $96,393 (ACS 2020-2024), the 9th highest of the 11 ranked ZIP codes in St. Charles County. It is not measurably different from 2015-2019 ($100,661 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $96,393
- Income per person
- $46,330
- Below the poverty line
- 4.7%
- Unemployed (of the labor force)
- 2.7%
- Adults 25+ with a bachelor's degree
- 38.8%
- Adjusted gross income per tax return, 2022
- $80,81938,520 returns; wages 74% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 63376?
FHFA's house price index for 63376, built from repeat sales and appraisals of the same homes, rose 96% from 2015 to 2025 and rose 52% from 2020 to 2025, and moved +4.4% in 2025.
- Median home value (owners' estimate)
- $275,400
- Median gross rent
- $1,349
- Homes owned by their occupants
- 81.3%
- Housing units
- 31,168
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 63376?
1,722 business establishments had a location in this ZIP code in 2023, 12 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance288
- Retail trade268
- Accommodation and food services163
- Other services (except public administration)154
- Construction151
- Professional, scientific, and technical services145
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 63376?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 63303 | Saint Charles | 46,089 | $99k | 5.6 mi |
| 63368 | O Fallon | 46,966 | $124k | 7.1 mi |
| 63366 | O Fallon | 54,769 | $101k | 7.2 mi |
| 63304 | Saint Charles | 43,195 | $114k | 7.7 mi |
| 63301 | Saint Charles | 52,667 | $85k | 8.9 mi |
| 62036 | Golden Eagle, IL | 574 | $103k | 8.2 mi (near) |
| 63045 | Earth City | 0 | – | 8.3 mi (near) |
| 63043 | Maryland Heights | 21,924 | $92k | 9.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.