| ZIP Codes: | 18 ZIP Codes (13 Standard, 3 PO Box, 2 Unique) [See All] |
| Area Code: | 563 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:51 PM |
| Population: | 45,809 [See All] |
| FIPS: | 19045 |
| CBSA: | Clinton, IA |
| Land Area: | 664 sq mi |
| Water Area: | 12 sq mi |
| Coordinates: | 41.8918, -90.4481 |
| Quick Link: |
45,809 residents live across 18 ZIPs covering 664 sq mi, served by 15 distinct USPS-recognized cities.
Population moved from 48,179 to 45,753 from 2014 to 2024 — a -5.0% change. 8 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 52727 (Bryant, $103,188 median) and poorest ZIP 52777 (Wheatland, $60,250) are 28.2 miles apart — a 1.7× income gap across local geography.
Median home values vary 2.3× across this county — from $113,600 in 52254 (Lost Nation) to $261,000 in 52742 (De Witt).
Density varies 28× across the county — from 16 people/sq mi in 52727 (Bryant) to 445 in 52757 (Low Moor).
Educational attainment ranges from 11.5% bachelor's+ in 52731 (Charlotte) to 33.6% in 52742 (De Witt) — the breadth of educational profiles across the area.
Within Iowa, this is the #12 most populous of 99 counties and ranks #29 for median household income .
Weighted by population, the typical household earns about $70,480 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.5% of adults age 25+ hold a bachelor's degree or higher (7,166 of 31,841 reporting).
13 Standard delivery, 3 PO Box only, 2 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 |
|---|---|---|---|---|---|---|
| 52732 | Clinton | Standard | 25,880 | $61,105 | 117.9 | -8.0% |
| 52742 | De Witt | Standard | 7,284 | $97,946 | 115.1 | -8.5% |
| 52730 | Camanche | Standard | 4,776 | $64,543 | 43.6 | -3.0% |
| 52777 | Wheatland | Standard | 1,389 | $60,250 | 54.9 | 9.8% |
| 52037 | Delmar | Standard | 1,172 | $90,813 | 69.2 | -6.2% |
| 52254 | Lost Nation | Standard | 1,004 | $64,375 | 59.8 | 23.6% |
| 52751 | Grand Mound | Standard | 976 | $82,143 | 50.2 | 2.5% |
| 52729 | Calamus | Standard | 886 | $87,500 | 41.9 | 13.3% |
| 52731 | Charlotte | Standard | 867 | $87,727 | 53.1 | 23.3% |
| 52750 | Goose Lake | Standard | 654 | $93,155 | 29.8 | 4.3% |
| 52727 | Bryant | Standard | 398 | $103,188 | 25.2 | -2.7% |
| 52757 | Low Moor | PO Box | 242 | $62,500 | 0.5 | 57.1% |
| 52701 | Andover | PO Box | 124 | — | 0.7 | 22.8% |
| 52774 | Welton | Standard | 101 | $71,250 | 0.3 | -9.8% |
| 52771 | Teeds Grove | Standard | 56 | — | 1.7 | — |
| 52736 | Clinton | Unique | — | — | 0.0 | — |
| 52733 | Clinton | PO Box | — | — | 0.0 | — |
| 52734 | Clinton | Unique | — | — | 0.0 | — |