| ZIP Codes: | 8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 812 / 930 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:05 PM |
| Population: | 10,856 [See All] |
| FIPS: | 18025 |
| Land Area: | 344 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 38.2980, -86.4585 |
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10,856 residents live across 8 ZIPs covering 344 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 11,026 to 10,787 from 2014 to 2024 — a -2.2% change. 4 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 47140 (Marengo, $65,718 median) and poorest ZIP 47123 (Grantsburg, $20,795) are 10.4 miles apart — a 3.2× income gap across local geography.
Median home values vary 1.3× across this county — from $105,700 in 47123 (Grantsburg) to $133,400 in 47137 (Leavenworth).
Density varies 4× across the county — from 14 people/sq mi in 47123 (Grantsburg) to 57 in 47140 (Marengo).
Educational attainment ranges from 9.5% bachelor's+ in 47175 (Taswell) to 17.9% in 47116 (Eckerty) — the breadth of educational profiles across the area.
Within Indiana, this is the #85 most populous of 92 counties and ranks #91 for median household income .
Weighted by population, the typical household earns about $53,598 across the county — reflecting what a typical resident sees, not a simple ZIP average.
12.1% of adults age 25+ hold a bachelor's degree or higher (955 of 7,873 reporting).
8 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 3.2× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 47118 | English | Standard | 3,529 | $41,579 | 135.1 | 4.7% |
| 47140 | Marengo | Standard | 2,539 | $65,718 | 44.4 | 6.5% |
| 47145 | Milltown | Standard | 1,782 | $48,434 | 41.0 | -17.8% |
| 47137 | Leavenworth | Standard | 1,532 | $65,505 | 64.3 | 10.8% |
| 47175 | Taswell | Standard | 847 | — | 24.6 | 16.8% |
| 47116 | Eckerty | Standard | 490 | $63,472 | 27.0 | -45.7% |
| 47174 | Sulphur | Standard | 69 | — | 2.9 | — |
| 47123 | Grantsburg | Standard | 68 | $20,795 | 5.0 | -27.7% |