Residential delivery area · Missouri
ZIP Code 63640: Farmington, MO
ZIP code 63640 uses the postal name Farmington, Missouri and lies mostly in St. Francois County (66% of its land) with the rest in Ste. Genevieve County (Census 2020 ZIP-county file). About 29,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $61,913 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Farmington (5%) and Knob Lick (under 1%), and 1% in smaller places; 94% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Farmington · its only residential ZIP
- County
- St. Francois County (66%); Ste. Genevieve County (34%)
- Census places
- Farmington (5%); Knob Lick (under 1%) census-designated place
- Micro area
- Farmington, MO
- House district
- MO-8 119th Congress
- State
- Missouri
- Time zone
- Central
- Land area
- 209.3 sq mi · 140 people per sq mi
Where is ZIP code 63640?
63640 centers on 37.755°, -90.369° and covers 209.3 square miles of land plus 0.9 of water. It borders 5 ZIP codes: 63637, 63601, 63645, 63670, 63628.
The map draws ZIP code areas only. For the streets inside 63640, 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 63640 compare with the rest of St. Francois County?
| Measure | 63640 | In St. Francois County | In MO |
|---|---|---|---|
| People (ACS 2020-2024) | 29,263 | 1st of 13 | 51st of 1,035 |
| Median household income | $62k | 2nd of 7 | 273rd of 479 |
| Median home value | $217k | 2nd of 9 | 202nd of 494 |
Its median household income is higher than in 33% of U.S. residential ZIP codes, and it is denser than 58% 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 63640?
The 2020 Census counted 29,145 people in 63640; the ACS, which samples households over 2020-2024, estimates 29,263. Between the 2010 and 2020 censuses its population grew 10.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 29,263
- 2020 Census count
- 29,145+10.7% since 2010 (26,335)
- Households
- 10,364
- Median age
- 39.2
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 63640?
Of the 29,263 people the ACS estimates in 63640, 21.0% are under 18 and 18.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.8%).
- Under 1821.0%
- 18 to 6460.8%
- 65 and older18.2%
- White, not Hispanic90.8%
- Other or two or more3.5%
- Black, not Hispanic3.5%
- Hispanic or Latino1.9%
- Asian, not Hispanic0.4%
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 63640 earn?
Median household income is $61,913 (ACS 2020-2024), the 2nd highest of the 7 ranked ZIP codes in St. Francois County. It is not measurably different from 2015-2019 ($63,386 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $61,913
- Income per person
- $30,547
- Below the poverty line
- 13.9%
- Unemployed (of the labor force)
- 4.1%
- Adults 25+ with a bachelor's degree
- 19.9%
- Adjusted gross income per tax return, 2022
- $73,99511,780 returns; wages 62% 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 63640?
FHFA's house price index for 63640, built from repeat sales and appraisals of the same homes, rose 87% from 2015 to 2025 and rose 54% from 2020 to 2025, and moved +3.9% in 2025.
- Median home value (owners' estimate)
- $216,700
- Median gross rent
- $857
- Homes owned by their occupants
- 63.4%
- Housing units
- 11,373
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 63640?
823 business establishments had a location in this ZIP code in 2023, 35 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance169
- Retail trade130
- Other services (except public administration)74
- Accommodation and food services73
- Construction68
- Finance and insurance58
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 63640?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 63637 | Doe Run | 759 | $55k | 8.7 mi |
| 63601 | Park Hills | 16,389 | $55k | 10.6 mi |
| 63645 | Fredericktown | 11,554 | $55k | 14.8 mi |
| 63670 | Sainte Genevieve | 12,293 | $63k | 15.2 mi |
| 63628 | Bonne Terre | 16,416 | $64k | 15.3 mi |
| 63653 | Leadwood | 1,186 | $38k | 14.0 mi (near) |
| 63624 | Bismarck | 3,447 | $42k | 14.5 mi (near) |
| 63036 | French Village | 1,001 | $58k | 15.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.