| ZIP Codes: | 10 ZIP Codes (7 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Code: | 334 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:52:38 PM |
| Population: | 16,139 [See All] |
| FIPS: | 01091 |
| Land Area: | 767 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 32.2489, -87.8240 |
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16,139 residents live across 10 ZIPs covering 767 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 18,069 to 16,139 from 2014 to 2024 — a -10.7% change. 2 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 36763 (Myrtlewood, $89,000 median) and poorest ZIP 36738 (Faunsdale, $34,583) are 22.4 miles apart — a 2.6× income gap across local geography.
Median home values vary 2.5× across this county — from $66,200 in 36782 (Sweet Water) to $166,800 in 36732 (Demopolis).
Density varies 9× across the county — from 6 people/sq mi in 36763 (Myrtlewood) to 57 in 36732 (Demopolis).
Educational attainment ranges from 1.0% bachelor's+ in 36763 (Myrtlewood) to 25.9% in 36732 (Demopolis) — the breadth of educational profiles across the area.
Within Alabama, this is the #52 most populous of 68 counties and ranks #46 for median household income .
Weighted by population, the typical household earns about $44,849 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.5% of adults age 25+ hold a bachelor's degree or higher (2,227 of 11,428 reporting).
7 Standard delivery, 3 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.
Marengo County lost 10.7% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 36732 | Demopolis | Standard | 8,387 | $42,216 | 148.0 | 2.4% |
| 36748 | Linden | Standard | 2,522 | $42,826 | 136.0 | -17.6% |
| 36782 | Sweet Water | Standard | 1,850 | $51,429 | 207.5 | -36.4% |
| 36736 | Dixons Mills | Standard | 1,559 | $55,759 | 43.7 | 3.1% |
| 36738 | Faunsdale | Standard | 747 | $34,583 | 67.1 | -31.2% |
| 36783 | Thomaston | Standard | 671 | $47,917 | 104.5 | -13.3% |
| 36754 | Magnolia | Standard | 287 | $39,583 | 42.1 | -5.3% |
| 36763 | Myrtlewood | PO Box | 116 | $89,000 | 18.6 | -50.6% |
| 36764 | Nanafalia | PO Box | 0 | — | 0.0 | — |
| 36745 | Jefferson | PO Box | — | — | 0.0 | — |