| ZIP Codes: | 11 ZIP Codes (7 Standard, 3 PO Box, 1 Unique) [See All] |
| Area Code: | 712 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:54 PM |
| Population: | 14,953 [See All] |
| FIPS: | 19145 |
| Land Area: | 541 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 40.6887, -95.1866 |
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14,953 residents live across 11 ZIPs covering 541 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 15,665 to 14,850 from 2014 to 2024 — a -5.2% change. 2 ZIPs gained residents, 7 lost.
The county's wealthiest ZIP 51637 (College Springs, $72,888 median) and poorest ZIP 51647 (Northboro, $23,633) are 10.4 miles apart — a 3.1× income gap across local geography.
Median home values vary 2.9× across this county — from $64,400 in 51651 (Shambaugh) to $189,300 in 51630 (Blanchard).
Density varies 47× across the county — from 6 people/sq mi in 51630 (Blanchard) to 290 in 51651 (Shambaugh).
Educational attainment ranges from 8.5% bachelor's+ in 51631 (Braddyville) to 28.0% in 51647 (Northboro) — the breadth of educational profiles across the area.
Within Iowa, this is the #50 most populous of 99 counties and ranks #95 for median household income .
Hosts 1 single-entity Unique ZIP: 51603Earl May Seed .
Weighted by population, the typical household earns about $58,474 across the county — reflecting what a typical resident sees, not a simple ZIP average.
18.3% of adults age 25+ hold a bachelor's degree or higher (2,053 of 11,241 reporting).
7 Standard delivery, 3 PO Box only, 1 single-entity Unique ZIPs serve this county.
Median household income spans 3.1× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
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 |
|---|---|---|---|---|---|---|
| 51632 | Clarinda | Standard | 6,624 | $55,055 | 212.5 | -5.6% |
| 51601 | Shenandoah | Standard | 5,629 | $62,143 | 103.4 | -3.5% |
| 51638 | Essex | Standard | 1,258 | $59,107 | 77.5 | -14.8% |
| 51636 | Coin | Standard | 455 | $63,516 | 56.1 | -0.4% |
| 51631 | Braddyville | Standard | 324 | $54,583 | 38.8 | 24.6% |
| 51647 | Northboro | Standard | 172 | $23,633 | 23.7 | 81.1% |
| 51637 | College Springs | PO Box | 171 | $72,888 | 1.3 | -19.3% |
| 51630 | Blanchard | Standard | 160 | $70,000 | 26.1 | -24.9% |
| 51651 | Shambaugh | PO Box | 103 | $62,500 | 0.4 | — |
| 51656 | Yorktown | PO Box | 57 | $83,750 | 0.3 | -43.0% |
| 51603 | Shenandoah | Unique | — | — | 0.5 | — |