| ZIP Codes: | 8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 235 / 573 / 636 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:54:02 PM |
| Population: | 12,482 [See All] |
| FIPS: | 29139 |
| Land Area: | 677 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 38.9536, -91.4445 |
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12,482 residents live across 8 ZIPs covering 677 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 12,941 to 12,482 from 2014 to 2024 — a -3.5% change. 4 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 63384 (Wellsville, $78,281 median) and poorest ZIP 63363 (New Florence, $47,188) are 14.4 miles apart — a 1.7× income gap across local geography.
Median home values vary 2.1× across this county — from $97,800 in 63363 (New Florence) to $207,100 in 63351 (Jonesburg).
Density varies 4× across the county — from 8 people/sq mi in 65069 (Rhineland) to 28 in 63361 (Montgomery City).
Educational attainment ranges from 10.5% bachelor's+ in 63351 (Jonesburg) to 22.5% in 63361 (Montgomery City) — the breadth of educational profiles across the area.
Within Missouri, this is the #75 most populous of 116 counties and ranks #35 for median household income .
Weighted by population, the typical household earns about $67,278 across the county — reflecting what a typical resident sees, not a simple ZIP average.
17.7% of adults age 25+ hold a bachelor's degree or higher (1,563 of 8,833 reporting).
8 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 63361 | Montgomery City | Standard | 4,460 | $62,371 | 161.8 | -1.0% |
| 63384 | Wellsville | Standard | 2,049 | $78,281 | 81.0 | 18.1% |
| 63359 | Middletown | Standard | 1,667 | $75,227 | 151.1 | 52.5% |
| 63351 | Jonesburg | Standard | 1,389 | $67,500 | 54.0 | -18.8% |
| 63363 | New Florence | Standard | 949 | $47,188 | 83.6 | -43.1% |
| 63350 | High Hill | Standard | 769 | $69,111 | 31.2 | 1.5% |
| 63333 | Bellflower | Standard | 688 | $64,688 | 48.8 | 2.4% |
| 65069 | Rhineland | Standard | 511 | $77,500 | 65.5 | -36.4% |