| ZIP Codes: | 10 ZIP Codes (10 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 319 / 563 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:54 PM |
| Population: | 43,531 [See All] |
| FIPS: | 19139 |
| CBSA: | Muscatine, IA |
| Land Area: | 533 sq mi |
| Water Area: | 15 sq mi |
| Coordinates: | 41.4969, -91.1109 |
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43,531 residents live across 10 ZIPs covering 533 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 44,257 to 43,364 from 2014 to 2024 — a -2.0% change. 2 ZIPs gained residents, 6 lost (and 1 held flat).
The county's wealthiest ZIP 52749 (Fruitland, $103,424 median) and poorest ZIP 52766 (Nichols, $61,865) are 11.9 miles apart — a 1.7× income gap across local geography.
Median home values vary 3.4× across this county — from $97,500 in 52739 (Conesville) to $332,500 in 52769 (Stockton).
Density varies 38× across the county — from 13 people/sq mi in 52766 (Nichols) to 510 in 52749 (Fruitland).
Educational attainment ranges from 1.7% bachelor's+ in 52760 (Moscow) to 33.6% in 52778 (Wilton) — the breadth of educational profiles across the area.
Within Iowa, this is the #13 most populous of 99 counties and ranks #33 for median household income .
Weighted by population, the typical household earns about $68,347 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.0% of adults age 25+ hold a bachelor's degree or higher (6,510 of 29,530 reporting).
10 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.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 52761 | Muscatine | Standard | 29,474 | $62,098 | 183.1 | -3.5% |
| 52776 | West Liberty | Standard | 5,090 | $79,665 | 85.9 | 11.4% |
| 52778 | Wilton | Standard | 3,632 | $82,623 | 75.5 | -9.2% |
| 52749 | Fruitland | Standard | 1,049 | $103,424 | 2.1 | -17.0% |
| 52760 | Moscow | Standard | 992 | $86,397 | 22.6 | 217.9% |
| 52720 | Atalissa | Standard | 964 | $73,571 | 43.2 | -17.4% |
| 52739 | Conesville | Standard | 788 | $74,375 | 34.1 | 0.0% |
| 52769 | Stockton | Standard | 698 | $88,750 | 35.5 | -10.2% |
| 52766 | Nichols | Standard | 677 | $61,865 | 51.0 | -19.0% |
| 52759 | Montpelier | Standard | 167 | $70,568 | 0.3 | — |