Residential delivery area · Missouri
ZIP Code 64503: Saint Joseph, MO
ZIP code 64503 uses the postal name Saint Joseph, Missouri and lies entirely in Buchanan County (Census 2020 ZIP-county file). About 12,000 people live there (Census Bureau, ACS 2020-2024), the 4th most populous of Saint Joseph's 6 residential ZIP codes. Median household income is $53,039 (Census Bureau, ACS 2020-2024). Most of its land (60%) lies in the city of St. Joseph.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Joseph · 6 residential ZIPs
- County
- Buchanan County
- Census places
- St. Joseph
- Metro area
- St. Joseph, MO-KS
- House district
- MO-6 119th Congress
- State
- Missouri
- Time zone
- Central
- Land area
- 14.5 sq mi · 826 people per sq mi
Where is ZIP code 64503?
64503 centers on 39.749°, -94.846° and covers 14.5 square miles of land plus 0.2 of water. It borders 6 ZIP codes: 64501, 66024, 64504, 64507, 64505, 66090.
The map draws ZIP code areas only. For the streets inside 64503, 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 64503 compare with the rest of Saint Joseph?
| Measure | 64503 | In Saint Joseph | In Buchanan County | In MO |
|---|---|---|---|---|
| People (ACS 2020-2024) | 11,954 | 4th of 6 | 4th of 14 | 164th of 1,035 |
| Median household income | $53k | 5th of 6 | 8th of 9 | 385th of 479 |
| Median home value | $141k | 3rd of 6 | 6th of 9 | 398th of 494 |
Its median household income is higher than in 18% of U.S. residential ZIP codes, and it is denser than 77% 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 64503?
The 2020 Census counted 12,127 people in 64503; the ACS, which samples households over 2020-2024, estimates 11,954. Between the 2010 and 2020 censuses its population fell 6.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 11,954
- 2020 Census count
- 12,127−6.1% since 2010 (12,921)
- Households
- 5,103
- Median age
- 40.4
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 64503?
Of the 11,954 people the ACS estimates in 64503, 19.8% are under 18 and 17.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (83.5%).
- Under 1819.8%
- 18 to 6463.2%
- 65 and older17.1%
- White, not Hispanic83.5%
- Hispanic or Latino6.8%
- Other or two or more6.0%
- Black, not Hispanic3.4%
- Asian, not Hispanic0.2%
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 64503 earn?
Median household income is $53,039 (ACS 2020-2024), the 8th highest of the 9 ranked ZIP codes in Buchanan County. It is not measurably different from 2015-2019 ($60,327 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $53,039±$5,408
- Income per person
- $31,151
- Below the poverty line
- 17.7%
- Unemployed (of the labor force)
- 4.2%
- Adults 25+ with a bachelor's degree
- 15.6%
- Adjusted gross income per tax return, 2022
- $49,3655,790 returns; wages 81% 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 64503?
FHFA's house price index for 64503, built from repeat sales and appraisals of the same homes, rose 98% from 2015 to 2025 and rose 60% from 2020 to 2025, and moved +13.1% in 2025.
- Median home value (owners' estimate)
- $140,500
- Median gross rent
- $886
- Homes owned by their occupants
- 68.7%
- Housing units
- 5,755
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 64503?
241 business establishments had a location in this ZIP code in 2023, 50 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade41
- Construction26
- Other services (except public administration)26
- Transportation and warehousing25
- Wholesale trade20
- Accommodation and food services20
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 64503?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 64501 | Saint Joseph | 10,689 | $47k | 1.2 mi |
| 66024 | Elwood, KS | 815 | $68k | 2.5 mi |
| 64504 | Saint Joseph | 10,068 | $59k | 5.1 mi |
| 64507 | Saint Joseph | 13,991 | $61k | 5.7 mi |
| 64505 | Saint Joseph | 14,107 | $73k | 6.8 mi |
| 66090 | Wathena, KS | 2,380 | $87k | 7.3 mi |
| 64506 | Saint Joseph | 21,461 | $66k | 3.6 mi (near) |
| 64448 | Faucett | 912 | $76k | 10.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.