| ZIP Codes: | 12 ZIP Codes (11 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 515 / 641 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:53 PM |
| Population: | 33,854 [See All] |
| FIPS: | 19125 |
| CBSA: | Pella, IA |
| Land Area: | 589 sq mi |
| Water Area: | 15 sq mi |
| Coordinates: | 41.3011, -93.0845 |
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33,854 residents live across 12 ZIPs covering 589 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 33,941 to 33,854 from 2014 to 2024 — a -0.3% change. 6 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 50057 (Columbia, $118,882 median) and poorest ZIP 50116 (Hamilton, $47,143) are 9.2 miles apart — a 2.5× income gap across local geography.
Median home values vary 3.1× across this county — from $97,800 in 50163 (Melcher Dallas) to $301,400 in 50219 (Pella).
Density varies 104× across the county — from 16 people/sq mi in 50116 (Hamilton) to 1,676 in 50163 (Melcher Dallas).
Educational attainment ranges from 2.8% bachelor's+ in 50116 (Hamilton) to 44.0% in 50219 (Pella) — the breadth of educational profiles across the area.
Within Iowa, this is the #21 most populous of 99 counties and ranks #34 for median household income .
Weighted by population, the typical household earns about $79,396 across the county — reflecting what a typical resident sees, not a simple ZIP average.
32.0% of adults age 25+ hold a bachelor's degree or higher (7,222 of 22,581 reporting).
11 Standard delivery, 1 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 |
|---|---|---|---|---|---|---|
| 50219 | Pella | Standard | 14,416 | $86,807 | 118.6 | 2.9% |
| 50138 | Knoxville | Standard | 11,117 | $74,693 | 179.5 | -4.2% |
| 50225 | Pleasantville | Standard | 3,364 | $69,923 | 85.4 | 6.4% |
| 50044 | Bussey | Standard | 901 | $75,417 | 46.7 | -14.4% |
| 50062 | Melcher Dallas | Standard | 789 | $51,146 | 30.7 | 31.7% |
| 50214 | Otley | Standard | 719 | — | 41.0 | -18.4% |
| 50163 | Melcher Dallas | PO Box | 689 | $73,618 | 0.4 | -9.6% |
| 50256 | Tracy | Standard | 643 | $83,438 | 24.2 | -7.1% |
| 50119 | Harvey | Standard | 392 | $59,750 | 13.5 | -25.2% |
| 50057 | Columbia | Standard | 327 | $118,882 | 19.7 | 8.6% |
| 50116 | Hamilton | Standard | 261 | $47,143 | 16.2 | 20.3% |
| 50252 | Swan | Standard | 236 | $112,292 | 12.8 | 69.8% |