| ZIP Codes: | 9 ZIP Codes (9 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 660 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:43 PM |
| Population: | 12,505 [See All] |
| FIPS: | 29115 |
| Land Area: | 780 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 39.8564, -93.0873 |
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12,505 residents live across 9 ZIPs covering 780 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 13,259 to 12,505 from 2014 to 2024 — a -5.7% change. 2 ZIPs gained residents, 7 lost.
The county's wealthiest ZIP 64658 (Marceline, $75,848 median) and poorest ZIP 64653 (Linneus, $54,821) are 21.0 miles apart — a 1.4× income gap across local geography.
Median home values vary 3.6× across this county — from $78,000 in 64651 (Laclede) to $280,600 in 63557 (New Boston).
Density varies 13× across the county — from 3 people/sq mi in 63557 (New Boston) to 39 in 64628 (Brookfield).
Educational attainment ranges from 3.4% bachelor's+ in 63557 (New Boston) to 23.4% in 64659 (Meadville) — the breadth of educational profiles across the area.
Within Missouri, this is the #74 most populous of 116 counties and ranks #43 for median household income .
Weighted by population, the typical household earns about $65,096 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.3% of adults age 25+ hold a bachelor's degree or higher (1,690 of 8,759 reporting).
9 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.
Linn County lost 5.7% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 64628 | Brookfield | Standard | 5,661 | $59,361 | 146.3 | -1.1% |
| 64658 | Marceline | Standard | 3,147 | $75,848 | 98.8 | 2.0% |
| 64631 | Bucklin | Standard | 836 | $59,917 | 86.7 | -10.7% |
| 64659 | Meadville | Standard | 793 | $73,698 | 73.0 | -19.3% |
| 64630 | Browning | Standard | 495 | $57,813 | 102.7 | -1.8% |
| 64651 | Laclede | Standard | 461 | $72,321 | 38.6 | -29.6% |
| 64653 | Linneus | Standard | 431 | $54,821 | 77.0 | -38.0% |
| 64674 | Purdin | Standard | 409 | $70,000 | 66.6 | -4.0% |
| 63557 | New Boston | Standard | 272 | $60,833 | 90.2 | 7.9% |