| ZIP Codes: | 9 ZIP Codes (9 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 712 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:54 PM |
| Population: | 8,715 [See All] |
| FIPS: | 19133 |
| Land Area: | 646 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 42.0536, -95.9198 |
| Quick Link: |
8,715 residents live across 9 ZIPs covering 646 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 9,038 to 8,715 from 2014 to 2024 — a -3.6% change. 3 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 51010 (Castana, $89,063 median) and poorest ZIP 51060 (Ute, $52,500) are 8.9 miles apart — a 1.7× income gap across local geography.
Median home values vary 1.6× across this county — from $99,400 in 51060 (Ute) to $159,500 in 51063 (Whiting).
Density varies 5× across the county — from 5 people/sq mi in 51010 (Castana) to 24 in 51040 (Onawa).
Educational attainment ranges from 5.9% bachelor's+ in 51060 (Ute) to 30.7% in 51063 (Whiting) — the breadth of educational profiles across the area.
Within Iowa, this is the #84 most populous of 99 counties and ranks #59 for median household income .
Weighted by population, the typical household earns about $71,524 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.8% of adults age 25+ hold a bachelor's degree or higher (1,214 of 6,122 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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 51040 | Onawa | Standard | 3,500 | $71,179 | 143.8 | -2.1% |
| 51034 | Mapleton | Standard | 1,674 | $66,375 | 107.8 | -7.8% |
| 51063 | Whiting | Standard | 1,072 | $80,750 | 79.8 | -17.7% |
| 51060 | Ute | Standard | 706 | $52,500 | 58.3 | 19.5% |
| 51558 | Moorhead | Standard | 549 | $77,417 | 82.1 | -9.9% |
| 51010 | Castana | Standard | 425 | $89,063 | 81.4 | 59.2% |
| 51523 | Blencoe | Standard | 379 | $82,625 | 47.5 | 6.8% |
| 51572 | Soldier | Standard | 371 | $69,500 | 41.7 | -11.7% |
| 51051 | Rodney | Standard | 39 | $51,563 | 3.4 | -62.1% |