| ZIP Codes: | 10 ZIP Codes (9 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 235 / 573 / 636 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:54:04 PM |
| Population: | 70,115 [See All] |
| FIPS: | 29187 |
| CBSA: | Farmington, MO |
| Land Area: | 534 sq mi |
| Water Area: | 3 sq mi |
| Coordinates: | 37.8569, -90.4993 |
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70,115 residents live across 10 ZIPs covering 534 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 69,342 to 70,115 from 2014 to 2024 — a +1.1% change. 5 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 63626 (Blackwell, $82,599 median) and poorest ZIP 63653 (Leadwood, $38,021) are 13.4 miles apart — a 2.2× income gap across local geography.
Median home values vary 4.0× across this county — from $53,900 in 63653 (Leadwood) to $217,200 in 63087 (Valles Mines).
Density varies 36× across the county — from 30 people/sq mi in 63626 (Blackwell) to 1,087 in 63653 (Leadwood).
Educational attainment ranges from 4.1% bachelor's+ in 63626 (Blackwell) to 20.4% in 63036 (French Village) — the breadth of educational profiles across the area.
Within Missouri, this is the #17 most populous of 116 counties and ranks #78 for median household income .
Weighted by population, the typical household earns about $59,270 across the county — reflecting what a typical resident sees, not a simple ZIP average.
17.4% of adults age 25+ hold a bachelor's degree or higher (8,613 of 49,509 reporting).
9 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 63640 | Farmington | Standard | 29,263 | $61,913 | 212.2 | 7.5% |
| 63628 | Bonne Terre | Standard | 16,416 | $63,602 | 123.1 | 0.5% |
| 63601 | Park Hills | Standard | 16,389 | $54,753 | 59.6 | 1.4% |
| 63624 | Bismarck | Standard | 3,447 | $41,984 | 60.7 | -8.8% |
| 63653 | Leadwood | Standard | 1,186 | $38,021 | 1.1 | -18.8% |
| 63087 | Valles Mines | Standard | 1,066 | $60,313 | 16.4 | 9.9% |
| 63036 | French Village | Standard | 1,001 | $58,083 | 25.0 | 17.2% |
| 63637 | Doe Run | Standard | 759 | $54,926 | 16.1 | -38.8% |
| 63626 | Blackwell | Standard | 588 | $82,599 | 19.4 | -55.4% |
| 63651 | Knob Lick | PO Box | — | — | 0.0 | — |